Artificial Neural Network Channel Estimation for OFDM System

Size: px
Start display at page:

Download "Artificial Neural Network Channel Estimation for OFDM System"

Transcription

1 International Journal of Electronics and Computer Science Engineering 1686 Available Online at ISSN Artificial Neural Network Channel Estimation for OFDM System 1 Kanchan Sharma, Shweta Varshney 2 1,2 Dept. of Electronics and Communication Technology 1,2 Guru Gobind Singh Indraprastha University,Delhi, India Abstract- This paper uses Artificial Neural Network (ANN) for channel estimation based on Levenberg-Marquardt training algorithm in OFDM systems over Rayleigh fading channels. This technique utilizes the learning property of neural network. By using this feature, there is no need of any matrix computation and proposed technique is less complex. This technique is useful to achieving the high data rate, transmission capability with high bandwidth, efficiency and its robustness to multipath delay. In OFDM system, the Channel estimation is an essential problem so the Pilot-aided channel estimation has been used; a good choice of the pilot pattern should match the channel behavior both in time and frequency domains. In this arrangement, the performance of the channel estimation is analyzed with estimators based on Least Square Algorithm is carried out through MATLAB Simulation. The performance of OFDM with ANN is evaluated on the basis of Bit Error Rate (BER). The OFDM with ANN has been shown to perform much better than the OFDM without ANN. Keywords OFDM. Channel Estimation. Artificial Neural Network. Least-Square Error I. INTRODUCTION OFDM is becoming a very popular multi-carrier modulation technique for transmission of signals over wireless channels. Now OFDM is widely used for high-speed communications over frequency selective channels. OFDM divides the high data rate stream into parallel lower data rate and hence prolongs the symbol duration, thus helping to eliminate Inter Symbol Interference (ISI). It also allows the bandwidth of subcarriers to overlap without Inter Carrier Interference (ICI) as long as the modulated carriers are orthogonal. Therefore OFDM is considered as an efficient modulation technique for broadband access in a very dispersive environment. The frequency selective fading, is caused by multipath could lead to carriers used, being heavily attenuated due to destructive interference at the receiver. The result of this is the carriers being lost in the noise [1].To increase performance of OFDM system under frequency selective channels; the channel estimation is required before demodulation of OFDM signals [2]. The channel estimation is a process of characterizing the effect of the transmission medium on the input signal. In OFDM system there are several techniques for channel estimation [2-14].Among these techniques; Block type Pilot based channel estimation technique is more popular. The Block type Pilot based estimation techniques can be based on Least-Square (LS). The LS estimators have low complexity. In this paper, we propose an artificial neural network (ANN) based on channel estimation technique as an alternative to Block type pilot based channel estimation technique for OFDM systems over Rayleigh fading channels. The Simulation results show that ANN based on channel estimator gives better results as compared to Block type pilot based channel estimator for OFDM systems over the Rayleigh fading channel. The organization of this paper is as follows. In section II, description of OFDM system model is given. ANN based channel estimator is described in section III. Simulation results are offered in section IV and finally, section V Concludes the paper.

2 Artificial Neural Network Channel Estimation for OFDM System 1687 II.SYSTEM OUTLINE A. OFDM System Model A block diagram of the OFDM system is shown in Fig.1.Firstly the binary information is mapped using baseband modulation schemes such as QAM.Then the serial-to-parallel conversion is applied to baseband modulated signals. After modulation the symbol rate reduced to R=(R/log2M), where M is constellation is applied to baseband modulated signals. This reduces data rate by N times where N is number of parallel streams. Each of parallel streams constitutes tiny bandwidth in the spectrum. So these streams almost undergo flat fading in the channel. This is the greatest advantage of OFDM. After inserting pilots either to all subcarriers with a specific period of blocks or within a uniform period of frequency bins in all blocks, the serial-to-parallel converted data is modulated using Inverse Fast Fourier Transform (IFFT). After IFFT, the time domain signal is given by following equation: s(n)=ifft(s(k)),n=0,1,2..n-1 Where N is the length of FFT, s (k) is baseband data sequence. After IFFT, the guard interval called as cyclic Prefix is inserted to prevent Inter-Symbol-Interference (ISI). This interval should be chosen to be larger than expected delay spread of the multipath channel. The guard time includes the cyclically extended part of the OFDM symbol in order to eliminate the Inter-Carrier-Interference (ICI). The symbol extended with the cyclic prefix is given as follows: Where Nc is the length of the cyclic prefix. The resultant signal st(n) will be transmitted over frequency selective time varying fading channel with additive white Gaussian Noise (AWGN). The received signal is given by following equation: yt (n) = st (n) h (n) + w (n) (3) Where h(n) is the impulse response of the frequency selective channel and W(n) is AWGN. At the receiving end, firstly the cyclic prefix is removed. Then the signal y(n) without cyclic prefix is applied to FFT block in order to obtain following equation: After FFT block, assuming there is no ISI demodulated signal is given by following equation: Where H(k) is FFT[h(n)] and W(k) is FFT[w(n)].

3 IJECSE,Volume1,Number 3 Kanchan Sharma and Shweta Varshney 1688 Fig1 Block diagram of base band model of general OFDM system From Eq.5 that before demodulation, the channel estimation should be done at the receiver side, in order to compensate the effects of the channel on the received signal B. ArtificialNeuralNetworks(ANNs) Artificial Intelligence is a branch of study, which enhances the capability of computers by giving them human-like intelligence. The brain architecture has been extensively studied and attempts have been made to simulate it. Artificial Neural Networks (ANN) represent an area of artificial intelligence (AI). They are basically an attempt to simulate the brain. An artificial neuron model consists of a linear combination followed by an activation function. This network utilized the different type of activation functions; the common ones, which are the sufficient for most applications, are the sigmoidal and hyperbolic tangent functions. B.I Multi-layer Feed-Forward (FF) ANN First, consider the single layer FF network. A layer is a set of neurons or computational nodes at the same level. A set of inputs can be applied to this single layer of neurons. This would then become a single layer FF network. This single layer could be called the output layer (OL). Each node in the OL is called an output neuron. This structure can be extended to a multi-layer FF ANN by adding one or more layers to the existing network. These additional layers thenbecome hidden layers (HL). Each node in the HL is called a hidden neuron. They appear as intermediate neurons between the input and the output layers. In Figure 2, the three layers of an ANN are shown. The first layer is the input layer where the input datavector is passed into the network.the input is a two dimensional vector. Following that is the hidden layer containing 3 hidden neurons. Figure 2 Multilayer feed forward network B.II. ANN Based OFDM

4 Artificial Neural Network Channel Estimation for OFDM System 1689 In this paper the ANN based channel estimation is designed using MATLAB.We have simulated BER in 16-QAM modulated OFDM signal. The system model comprises of the blocks as shown in Figure 3. Figure 3 OFDM with ANN For ANN the symbols after parallel to serial converter block, which is QAM modulated are taken as the training data. The data after passing through the channel are taken as target. With these training data and target data we have trained the network for varying the SNR. After that we have tested the network with different OFDM signals. Now these tested data are demodulated and with these we calculate the BER. The parameters of the proposed technique are given in table1. Table -1Parameters of artificial neural networks parameter value Number of inputs 2 Number of hidden layers 2 Number of neurons 10,10 Epoch number 500 Training Function Levenberg-Marquart Transfer Function Tansig Performance Mean Aquare Error III. EXPERIMENT AND RESULT The BER performance has been observed for the OFDM signal for 16-QAM modulated signals in Rayleigh faded channel in fig4. In AWGN as well as faded channel OFDM with LS estimation 10-1 BER SNR Figure4. BER for LS estimators to OFDM Systems.

5 IJECSE,Volume1,Number 3 Kanchan Sharma and Shweta Varshney 1690 The ANN is trained with signal input from the transmitter side. For 16-QAM, the training sample set is a (1x8640) complex type matrix. The target sample set is presented to the ANN in the form of a matrix of size (1x8640) complex type matrix. The learning of the ANN is done in the training phase during which the ANN adjusts its weights according to the specific coding logic applied at the transmitter end. The ANN is trained for 1000 epochs and it performance is measured by Mean Square Error. During this phase, on an average, the ANN reaches this MSE goal with an accuracy of nearly 100%.this is confirmed by over twenty trials. During the simulation, severely faded data, mixed with AWGN is decoded by trained ANN to test its effectiveness and confirm its feasibility in that role. This test also assesses its accuracy of performance. Fig 5 shows the BER versus SNR of the LS with ANN channel estimation algorithms of OFDM system. It is seen that ANN based OFDM exhibits better performance in terms of lower Bit Error Rate (BER) ANN OFDM BER SNR db Fig5 BER plot for LS estimator with ANN to OFDM systems ANN OFDM Theoretical OFDM OFDM with LS estimation 10-1 B E R SNR db Fig6 Bit Error Rate of the OFDM system with and without the neural network Finally we can compare the BER plots of OFDM with LS estimation, theoretical OFDM and ANN OFDM.From the figure we can say that the best performance is obtained with the proposed ANN based technique for QAM. As shown in Figs.6, the best results are obtained with ANN based estimation technique. These results are very promising and show that neural networks can be efficiently used in an OFDM system.

6 Artificial Neural Network Channel Estimation for OFDM System 1691 IV.CONCLUSION In this paper an artificial neural network channel estimation technique based on levenbergmarquardttraining algorithm has been proposed for OFDM systems over Rayleigh fading channel. BER analysis of the ANN based estimator is obtained and compared with the LS estimation techniques. The application of ANN for Rayleigh multipath fading channel in modulated environment may come to an effective way to improve the BER probability in OFDM system. It shows the ANN transforms to be a suitable tool which makes channel estimation better as well as received data performance is significantly good in wireless communication. ANN specially feed-forward networks. With better configuration of the ANN and optimization conditions of training and testing, the ANN can be used as the efficient method for recovery of symbols at different fading condition. V. REFERENCE [1] Cebrail Çiflikli A. Tuncay Öz sahin A. Ça grı Yapici, Artificial Neural Network Channel Estimation Based on Levenberg-Marquardt for OFDM Systems, Wireless Pers Commun (2009) 51: DOI /s [2] Colieri, S., Ergen, M., Puri, A., & Bahai, A. (2002). A study of channel estimation in OFDM systems. In Proceedings of the IEEE 56th Vehicular Technology Conference, September 2002 (Vol. 2,pp ). [3] Edfors, O., Sandell, M.,Wilson, S. K., & Borjesson, P. O. (1998). OFDM channel estimation by singular value decomposition. IEEE Transactions of Communications, 46, [4] Tolochko, I., & Faulkner, M. (2002). Real time LMMSE channel estimation for wireless OFDM systems with transmitter diversity. In Proceedings of the 56th IEEE VTC, Vancouver, Canada (pp ). [5] Gacanin, H., Takaoka, S., & Adachi, F. (2005). Pilot-assisted channel estimation for OFDM/TDM with frequency-domain equalization. In Vehicular Technology Conference, September 2005, USA. [6] Colieri, S., Ergen, M., Puri, A.,&Bahai, A. (2002). Channel estimation techniques based on pilot arrangement in OFDM systems. IEEE Transactions on Broadcasting, 48(3), [7] Doukopoulos, X. G., & Moustakides, G. V. (2004). Adaptive algorithms for blind channel estimation in OFDM systems. In 2004 IEEE International Conference on Communications, June 2004 (Vol. 4,pp ). [8] Roy, S., & Li, C. (2002). A subspace blind channel estimation method for OFDM systems without cyclic prefix. IEEE Transactions on Wireless Communications, 1, [9] Patra, J. C., Pal, R. N., Baliarsingh, R., & Panda, G. (1999). Nonlinear channel equalization for QAM signal constellation using artificial neural networks. IEEE Transactions on Systems, Man, and Cybernetics,29(2), [10] Siu, S., Gibson, G. J., & Cowan, C. F. N. (1990). Decision feedback equalization using neural network structures and performance comparison with standard architecture. Proceedings of the Institution of Electrical Engineers, 137(pt. 1), [11] Naveed, A., Qureshi, I. M.,Cheema, T. A.,&Jalil, A. (2004).Blind equalization and estimation of channel using artificial neural network. In 8th International Multitopic Conference, INMIC 2004 (pp ). [12] Zhang, L., & Zhang, X. (2007). MIMO channel estimation and equalization using three-layer neural network with feedback. Tsinghua Science and Technology, 12(6), [13] Sun, J., & Yuan, D. F. (2006). Neural network channel estimation based on least mean error algorithm in the OFDM systems. Advances in Neural Networks. Berlin: Springer. van de Beek, J. J., Edfors, O., Sandell, M.,Wilson, S. K.,&Borjesson, P. O. (1996).On channel estimation in OFDM systems. In Proceedings of IEEE VTC 96, November 1996 (pp ).

1. INTRODUCTION II. SPREADING USING WALSH CODE. International Journal of Advanced Networking & Applications (IJANA) ISSN:

1. INTRODUCTION II. SPREADING USING WALSH CODE. International Journal of Advanced Networking & Applications (IJANA) ISSN: Analysis of DWT OFDM using Rician Channel and Comparison with ANN based OFDM Geeta S H1, Smitha B2, Shruthi G, Shilpa S G4 Department of Computer Science and Engineering, DBIT, Bangalore, Visvesvaraya

More information

TCM-coded OFDM assisted by ANN in Wireless Channels

TCM-coded OFDM assisted by ANN in Wireless Channels 1 Aradhana Misra & 2 Kandarpa Kumar Sarma Dept. of Electronics and Communication Technology Gauhati University Guwahati-781014. Assam, India Email: aradhana66@yahoo.co.in, kandarpaks@gmail.com Abstract

More information

Implementation and Comparative analysis of Orthogonal Frequency Division Multiplexing (OFDM) Signaling Rashmi Choudhary

Implementation and Comparative analysis of Orthogonal Frequency Division Multiplexing (OFDM) Signaling Rashmi Choudhary Implementation and Comparative analysis of Orthogonal Frequency Division Multiplexing (OFDM) Signaling Rashmi Choudhary M.Tech Scholar, ECE Department,SKIT, Jaipur, Abstract Orthogonal Frequency Division

More information

COMPARISON OF CHANNEL ESTIMATION AND EQUALIZATION TECHNIQUES FOR OFDM SYSTEMS

COMPARISON OF CHANNEL ESTIMATION AND EQUALIZATION TECHNIQUES FOR OFDM SYSTEMS COMPARISON OF CHANNEL ESTIMATION AND EQUALIZATION TECHNIQUES FOR OFDM SYSTEMS Sanjana T and Suma M N Department of Electronics and communication, BMS College of Engineering, Bangalore, India ABSTRACT In

More information

Performance Evaluation of OFDM System with Rayleigh, Rician and AWGN Channels

Performance Evaluation of OFDM System with Rayleigh, Rician and AWGN Channels Performance Evaluation of OFDM System with Rayleigh, Rician and AWGN Channels Abstract A Orthogonal Frequency Division Multiplexing (OFDM) scheme offers high spectral efficiency and better resistance to

More information

SPARSE CHANNEL ESTIMATION BY PILOT ALLOCATION IN MIMO-OFDM SYSTEMS

SPARSE CHANNEL ESTIMATION BY PILOT ALLOCATION IN MIMO-OFDM SYSTEMS SPARSE CHANNEL ESTIMATION BY PILOT ALLOCATION IN MIMO-OFDM SYSTEMS Puneetha R 1, Dr.S.Akhila 2 1 M. Tech in Digital Communication B M S College Of Engineering Karnataka, India 2 Professor Department of

More information

Improving Channel Estimation in OFDM System Using Time Domain Channel Estimation for Time Correlated Rayleigh Fading Channel Model

Improving Channel Estimation in OFDM System Using Time Domain Channel Estimation for Time Correlated Rayleigh Fading Channel Model International Journal of Engineering Science Invention ISSN (Online): 2319 6734, ISSN (Print): 2319 6726 Volume 2 Issue 8 ǁ August 2013 ǁ PP.45-51 Improving Channel Estimation in OFDM System Using Time

More information

Performance Improvement of IEEE a Receivers Using DFT based Channel Estimator with LS Channel Estimator

Performance Improvement of IEEE a Receivers Using DFT based Channel Estimator with LS Channel Estimator International Journal of Information & Computation Technology. ISSN 0974-2239 Volume 4, Number 14 (2014), pp. 1437-1444 International Research Publications House http://www. irphouse.com Performance Improvement

More information

BER Analysis for MC-CDMA

BER Analysis for MC-CDMA BER Analysis for MC-CDMA Nisha Yadav 1, Vikash Yadav 2 1,2 Institute of Technology and Sciences (Bhiwani), Haryana, India Abstract: As demand for higher data rates is continuously rising, there is always

More information

[Dobriyal, 4(9): September, 2015] ISSN: (I2OR), Publication Impact Factor: 3.785

[Dobriyal, 4(9): September, 2015] ISSN: (I2OR), Publication Impact Factor: 3.785 IJESRT INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY A REVIEW ON CHANNEL ESTIMATION USING BP NEURAL NETWORK FOR OFDM Bandana Dobriyal* *Department of Electronics and Communication,

More information

A Study of Channel Estimation in OFDM Systems

A Study of Channel Estimation in OFDM Systems A Study of Channel Estimation in OFDM Systems Sinem Coleri, Mustafa Ergen,Anuj Puri, Ahmad Bahai Abstract The channel estimation techniques for OFDM systems based on pilot arrangement are investigated.

More information

Performance analysis of MISO-OFDM & MIMO-OFDM Systems

Performance analysis of MISO-OFDM & MIMO-OFDM Systems Performance analysis of MISO-OFDM & MIMO-OFDM Systems Kavitha K V N #1, Abhishek Jaiswal *2, Sibaram Khara #3 1-2 School of Electronics Engineering, VIT University Vellore, Tamil Nadu, India 3 Galgotias

More information

Performance Analysis of Ofdm Transceiver using Gmsk Modulation Technique

Performance Analysis of Ofdm Transceiver using Gmsk Modulation Technique Performance Analysis of Ofdm Transceiver using Gmsk Modulation Technique Gunjan Negi Student, ECE Department GRD Institute of Management and Technology Dehradun, India negigunjan10@gmail.com Anuj Saxena

More information

Performance Evaluation of Nonlinear Equalizer based on Multilayer Perceptron for OFDM Power- Line Communication

Performance Evaluation of Nonlinear Equalizer based on Multilayer Perceptron for OFDM Power- Line Communication International Journal of Electrical Engineering. ISSN 974-2158 Volume 4, Number 8 (211), pp. 929-938 International Research Publication House http://www.irphouse.com Performance Evaluation of Nonlinear

More information

Performance Study of MIMO-OFDM System in Rayleigh Fading Channel with QO-STB Coding Technique

Performance Study of MIMO-OFDM System in Rayleigh Fading Channel with QO-STB Coding Technique e-issn 2455 1392 Volume 2 Issue 6, June 2016 pp. 190 197 Scientific Journal Impact Factor : 3.468 http://www.ijcter.com Performance Study of MIMO-OFDM System in Rayleigh Fading Channel with QO-STB Coding

More information

Simulative Investigations for Robust Frequency Estimation Technique in OFDM System

Simulative Investigations for Robust Frequency Estimation Technique in OFDM System , pp. 187-192 http://dx.doi.org/10.14257/ijfgcn.2015.8.4.18 Simulative Investigations for Robust Frequency Estimation Technique in OFDM System Kussum Bhagat 1 and Jyoteesh Malhotra 2 1 ECE Department,

More information

Performance Evaluation of Wireless Communication System Employing DWT-OFDM using Simulink Model

Performance Evaluation of Wireless Communication System Employing DWT-OFDM using Simulink Model Performance Evaluation of Wireless Communication System Employing DWT-OFDM using Simulink Model M. Prem Anand 1 Rudrashish Roy 2 1 Assistant Professor 2 M.E Student 1,2 Department of Electronics & Communication

More information

Comparison of ML and SC for ICI reduction in OFDM system

Comparison of ML and SC for ICI reduction in OFDM system Comparison of and for ICI reduction in OFDM system Mohammed hussein khaleel 1, neelesh agrawal 2 1 M.tech Student ECE department, Sam Higginbottom Institute of Agriculture, Technology and Science, Al-Mamon

More information

Optimal Number of Pilots for OFDM Systems

Optimal Number of Pilots for OFDM Systems IOSR Journal of Electronics and Communication Engineering (IOSR-JECE) e-issn: 2278-2834,p- ISSN: 2278-8735.Volume 8, Issue 6 (Nov. - Dec. 2013), PP 25-31 Optimal Number of Pilots for OFDM Systems Onésimo

More information

Analysis of Interference & BER with Simulation Concept for MC-CDMA

Analysis of Interference & BER with Simulation Concept for MC-CDMA IOSR Journal of Electronics and Communication Engineering (IOSR-JECE) e-issn: 2278-2834,p- ISSN: 2278-8735.Volume 9, Issue 4, Ver. IV (Jul - Aug. 2014), PP 46-51 Analysis of Interference & BER with Simulation

More information

Study of Performance Evaluation of Quasi Orthogonal Space Time Block Code MIMO-OFDM System in Rician Channel for Different Modulation Schemes

Study of Performance Evaluation of Quasi Orthogonal Space Time Block Code MIMO-OFDM System in Rician Channel for Different Modulation Schemes Volume 4, Issue 6, June (016) Study of Performance Evaluation of Quasi Orthogonal Space Time Block Code MIMO-OFDM System in Rician Channel for Different Modulation Schemes Pranil S Mengane D. Y. Patil

More information

Lecture 13. Introduction to OFDM

Lecture 13. Introduction to OFDM Lecture 13 Introduction to OFDM Ref: About-OFDM.pdf Orthogonal frequency division multiplexing (OFDM) is well-known to be effective against multipath distortion. It is a multicarrier communication scheme,

More information

IMPROVED CHANNEL ESTIMATION FOR OFDM BASED WLAN SYSTEMS. G.V.Rangaraj M.R.Raghavendra K.Giridhar

IMPROVED CHANNEL ESTIMATION FOR OFDM BASED WLAN SYSTEMS. G.V.Rangaraj M.R.Raghavendra K.Giridhar IMPROVED CHANNEL ESTIMATION FOR OFDM BASED WLAN SYSTEMS GVRangaraj MRRaghavendra KGiridhar Telecommunication and Networking TeNeT) Group Department of Electrical Engineering Indian Institute of Technology

More information

Comparison between Performances of Channel estimation Techniques for CP-LTE and ZP-LTE Downlink Systems

Comparison between Performances of Channel estimation Techniques for CP-LTE and ZP-LTE Downlink Systems Comparison between Performances of Channel estimation Techniques for CP-LTE and ZP-LTE Downlink Systems Abdelhakim Khlifi 1 and Ridha Bouallegue 2 1 National Engineering School of Tunis, Tunisia abdelhakim.khlifi@gmail.com

More information

2.

2. PERFORMANCE ANALYSIS OF STBC-MIMO OFDM SYSTEM WITH DWT & FFT Shubhangi R Chaudhary 1,Kiran Rohidas Jadhav 2. Department of Electronics and Telecommunication Cummins college of Engineering for Women Pune,

More information

UNIFIED DIGITAL AUDIO AND DIGITAL VIDEO BROADCASTING SYSTEM USING ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM) SYSTEM

UNIFIED DIGITAL AUDIO AND DIGITAL VIDEO BROADCASTING SYSTEM USING ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM) SYSTEM UNIFIED DIGITAL AUDIO AND DIGITAL VIDEO BROADCASTING SYSTEM USING ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM) SYSTEM 1 Drakshayini M N, 2 Dr. Arun Vikas Singh 1 drakshayini@tjohngroup.com, 2 arunsingh@tjohngroup.com

More information

OFDM AS AN ACCESS TECHNIQUE FOR NEXT GENERATION NETWORK

OFDM AS AN ACCESS TECHNIQUE FOR NEXT GENERATION NETWORK OFDM AS AN ACCESS TECHNIQUE FOR NEXT GENERATION NETWORK Akshita Abrol Department of Electronics & Communication, GCET, Jammu, J&K, India ABSTRACT With the rapid growth of digital wireless communication

More information

Performance Analysis of OFDM System in Multipath Fading Environment

Performance Analysis of OFDM System in Multipath Fading Environment Performance Analysis of OFDM System in Multipath Fading Environment Kratika Gupta riyagupta180@yahoo.com Pratibha Nagaich pratibha.nagaich@trubainstitute.ac.in Abstract A detailed study of the OFDM technique

More information

AWGN Channel Performance Analysis of QO-STB Coded MIMO- OFDM System

AWGN Channel Performance Analysis of QO-STB Coded MIMO- OFDM System AWGN Channel Performance Analysis of QO-STB Coded MIMO- OFDM System Pranil Mengane 1, Ajitsinh Jadhav 2 12 Department of Electronics & Telecommunication Engg, D.Y. Patil College of Engg & Tech, Kolhapur

More information

Channel Estimation in Multipath fading Environment using Combined Equalizer and Diversity Techniques

Channel Estimation in Multipath fading Environment using Combined Equalizer and Diversity Techniques International Journal of Scientific & Engineering Research Volume3, Issue 1, January 2012 1 Channel Estimation in Multipath fading Environment using Combined Equalizer and Diversity Techniques Deepmala

More information

A Research Concept on Bit Rate Detection using Carrier offset through Analysis of MC-CDMA SYSTEM

A Research Concept on Bit Rate Detection using Carrier offset through Analysis of MC-CDMA SYSTEM Available Online at www.ijcsmc.com International Journal of Computer Science and Mobile Computing A Monthly Journal of Computer Science and Information Technology ISSN 2320 088X IMPACT FACTOR: 5.258 IJCSMC,

More information

Performance Analysis of Equalizer Techniques for Modulated Signals

Performance Analysis of Equalizer Techniques for Modulated Signals Vol. 3, Issue 4, Jul-Aug 213, pp.1191-1195 Performance Analysis of Equalizer Techniques for Modulated Signals Gunjan Verma, Prof. Jaspal Bagga (M.E in VLSI, SSGI University, Bhilai (C.G). Associate Professor

More information

WAVELET OFDM WAVELET OFDM

WAVELET OFDM WAVELET OFDM EE678 WAVELETS APPLICATION ASSIGNMENT WAVELET OFDM GROUP MEMBERS RISHABH KASLIWAL rishkas@ee.iitb.ac.in 02D07001 NACHIKET KALE nachiket@ee.iitb.ac.in 02D07002 PIYUSH NAHAR nahar@ee.iitb.ac.in 02D07007

More information

Evaluation of BER and PAPR by using Different Modulation Schemes in OFDM System

Evaluation of BER and PAPR by using Different Modulation Schemes in OFDM System International Journal of Computer Networks and Communications Security VOL. 3, NO. 7, JULY 2015, 277 282 Available online at: www.ijcncs.org E-ISSN 2308-9830 (Online) / ISSN 2410-0595 (Print) Evaluation

More information

Efficient CFO Compensation Method in Uplink OFDMA for Mobile WiMax

Efficient CFO Compensation Method in Uplink OFDMA for Mobile WiMax 140 J. ICT Res. Appl., Vol. 10, No. 2, 2016, 140-152 Efficient CFO Compensation Method in Uplink OFDMA for Mobile WiMax Lakshmanan Muthukaruppan 1,*, Parthasharathi Mallick 2, Nithyanandan Lakshmanan 3

More information

Decrease Interference Using Adaptive Modulation and Coding

Decrease Interference Using Adaptive Modulation and Coding International Journal of Computer Networks and Communications Security VOL. 3, NO. 9, SEPTEMBER 2015, 378 383 Available online at: www.ijcncs.org E-ISSN 2308-9830 (Online) / ISSN 2410-0595 (Print) Decrease

More information

4x4 Time-Domain MIMO encoder with OFDM Scheme in WIMAX Context

4x4 Time-Domain MIMO encoder with OFDM Scheme in WIMAX Context 4x4 Time-Domain MIMO encoder with OFDM Scheme in WIMAX Context Mohamed.Messaoudi 1, Majdi.Benzarti 2, Salem.Hasnaoui 3 Al-Manar University, SYSCOM Laboratory / ENIT, Tunisia 1 messaoudi.jmohamed@gmail.com,

More information

Frequency Offset Compensation In OFDM System Using Neural Network

Frequency Offset Compensation In OFDM System Using Neural Network Frequency Offset Compensation In OFDM System Using Neural Network Rachana P. Borghate 1, Suvarna K. Gosavi 2 Lecturer, Dept. of ETRX, Rajiv Gandhi college of Engg, Nagpur, Maharashtra, India 1 Lecturer,

More information

Underwater communication implementation with OFDM

Underwater communication implementation with OFDM Indian Journal of Geo-Marine Sciences Vol. 44(2), February 2015, pp. 259-266 Underwater communication implementation with OFDM K. Chithra*, N. Sireesha, C. Thangavel, V. Gowthaman, S. Sathya Narayanan,

More information

ESTIMATION OF CHANNELS IN OFDM EMPLOYING CYCLIC PREFIX

ESTIMATION OF CHANNELS IN OFDM EMPLOYING CYCLIC PREFIX ESTIMATION OF CHANNELS IN OFDM EMPLOYING CYCLIC PREFIX Manisha Mohite Department Of Electronics and Telecommunication Terna College of Engineering, Nerul, Navi-Mumbai, India manisha.vhantale@gmail.com

More information

On Comparison of DFT-Based and DCT-Based Channel Estimation for OFDM System

On Comparison of DFT-Based and DCT-Based Channel Estimation for OFDM System www.ijcsi.org 353 On Comparison of -Based and DCT-Based Channel Estimation for OFDM System Saqib Saleem 1, Qamar-ul-Islam Department of Communication System Engineering Institute of Space Technology Islamabad,

More information

Performance Analysis of OFDM System with QPSK for Wireless Communication

Performance Analysis of OFDM System with QPSK for Wireless Communication IOSR Journal of Electronics and Communication Engineering (IOSR-JECE) e-issn: 2278-2834,p- ISSN: 2278-8735.Volume 11, Issue 3, Ver. I (May-Jun.2016), PP 33-37 www.iosrjournals.org Performance Analysis

More information

Joint Detection and Channel Estimation of LTE Downlink System using Unique Iterative Decoding Technique

Joint Detection and Channel Estimation of LTE Downlink System using Unique Iterative Decoding Technique Joint Detection and Channel Estimation of LTE Downlink System using Unique Iterative Decoding Technique VIJAY K PATEL 1, DR. D. J. SHAH 2 ELECTRONICS & COMMUNICATION ENGINEERING 1, GANPAT UNIVERSITY 1,

More information

Study of Turbo Coded OFDM over Fading Channel

Study of Turbo Coded OFDM over Fading Channel International Journal of Engineering Research and Development e-issn: 2278-067X, p-issn: 2278-800X, www.ijerd.com Volume 3, Issue 2 (August 2012), PP. 54-58 Study of Turbo Coded OFDM over Fading Channel

More information

OFDM Systems For Different Modulation Technique

OFDM Systems For Different Modulation Technique Computing For Nation Development, February 08 09, 2008 Bharati Vidyapeeth s Institute of Computer Applications and Management, New Delhi OFDM Systems For Different Modulation Technique Mrs. Pranita N.

More information

BER ANALYSIS OF BPSK, QPSK & QAM BASED OFDM SYSTEM USING SIMULINK

BER ANALYSIS OF BPSK, QPSK & QAM BASED OFDM SYSTEM USING SIMULINK BER ANALYSIS OF BPSK, QPSK & QAM BASED OFDM SYSTEM USING SIMULINK Pratima Manhas 1, Dr M.K Soni 2 1 Research Scholar, FET, ECE, 2 ED& Dean, FET, Manav Rachna International University, Fbd (India) ABSTRACT

More information

Performance Analysis of Concatenated RS-CC Codes for WiMax System using QPSK

Performance Analysis of Concatenated RS-CC Codes for WiMax System using QPSK Performance Analysis of Concatenated RS-CC Codes for WiMax System using QPSK Department of Electronics Technology, GND University Amritsar, Punjab, India Abstract-In this paper we present a practical RS-CC

More information

Performance Improvement of OFDM System using Raised Cosine Windowing with Variable FFT Sizes

Performance Improvement of OFDM System using Raised Cosine Windowing with Variable FFT Sizes International Journal of Research (IJR) Vol-1, Issue-6, July 14 ISSN 2348-6848 Performance Improvement of OFDM System using Raised Cosine Windowing with Variable FFT Sizes Prateek Nigam 1, Monika Sahu

More information

Orthogonal Cyclic Prefix for Time Synchronization in MIMO-OFDM

Orthogonal Cyclic Prefix for Time Synchronization in MIMO-OFDM Orthogonal Cyclic Prefix for Time Synchronization in MIMO-OFDM Gajanan R. Gaurshetti & Sanjay V. Khobragade Dr. Babasaheb Ambedkar Technological University, Lonere E-mail : gaurshetty@gmail.com, svk2305@gmail.com

More information

Bit error rate simulation using 16 qam technique in matlab

Bit error rate simulation using 16 qam technique in matlab Volume :2, Issue :5, 59-64 May 2015 www.allsubjectjournal.com e-issn: 2349-4182 p-issn: 2349-5979 Impact Factor: 3.762 Ravi Kant Gupta M.Tech. Scholar, Department of Electronics & Communication, Bhagwant

More information

Channel Estimation in Wireless OFDM Systems

Channel Estimation in Wireless OFDM Systems Estimation in Wireless OFDM Systems Govind Patidar M. Tech. Scholar, Electronics & Communication Engineering Mandsaur Institute of Technology Mandsaur,India gp.patidar10@gmail.com Abstract Orthogonal frequency

More information

Carrier Frequency Offset Estimation Algorithm in the Presence of I/Q Imbalance in OFDM Systems

Carrier Frequency Offset Estimation Algorithm in the Presence of I/Q Imbalance in OFDM Systems Carrier Frequency Offset Estimation Algorithm in the Presence of I/Q Imbalance in OFDM Systems K. Jagan Mohan, K. Suresh & J. Durga Rao Dept. of E.C.E, Chaitanya Engineering College, Vishakapatnam, India

More information

A COMPARATIVE STUDY OF CHANNEL ESTIMATION FOR MULTICARRIER SYSTEM FOR QAM/QPSK MODULATION TECHNIQUES

A COMPARATIVE STUDY OF CHANNEL ESTIMATION FOR MULTICARRIER SYSTEM FOR QAM/QPSK MODULATION TECHNIQUES A COPARATIVE STUDY OF CHANNEL ESTIATION FOR ULTICARRIER SYSTE FOR / ODULATION TECHNIQUES RAARISHNA.S, PRIYATAUAR Assistant Professor, Department of Electronics & Communication, BVBCET-Hubli, arnataka,

More information

Performance and Complexity Comparison of Channel Estimation Algorithms for OFDM System

Performance and Complexity Comparison of Channel Estimation Algorithms for OFDM System Performance and Complexity Comparison of Channel Estimation Algorithms for OFDM System Saqib Saleem 1, Qamar-Ul-Islam 2 Department of Communication System Engineering Institute of Space Technology Islamabad,

More information

A SURVEY OF LOW COMPLEXITY ESTIMATOR FOR DOWNLINK MC-CDMA SYSTEMS

A SURVEY OF LOW COMPLEXITY ESTIMATOR FOR DOWNLINK MC-CDMA SYSTEMS A SURVEY OF LOW COMPLEXITY ESTIMATOR FOR DOWNLINK MC-CDMA SYSTEMS Nitin Kumar Suyan, Mrs. Garima Saini Abstract This paper provides a survey among different types of channel estimation schemes for MC-CDMA.

More information

An Equalization Technique for Orthogonal Frequency-Division Multiplexing Systems in Time-Variant Multipath Channels

An Equalization Technique for Orthogonal Frequency-Division Multiplexing Systems in Time-Variant Multipath Channels IEEE TRANSACTIONS ON COMMUNICATIONS, VOL 47, NO 1, JANUARY 1999 27 An Equalization Technique for Orthogonal Frequency-Division Multiplexing Systems in Time-Variant Multipath Channels Won Gi Jeon, Student

More information

Performance Evaluation of Block-Type and Comb-Type Channel Estimation for OFDM System

Performance Evaluation of Block-Type and Comb-Type Channel Estimation for OFDM System Performance Evaluation of Block-Type and Comb-Type Channel Estimation for OFDM System Ranju Kumari Shiwakoti, Ram Krishna Maharjan Department of Electronics and Computer Engineering, IOE, Central Campus,

More information

Kalman Filter Channel Estimation Based Inter Carrier Interference Cancellation techniques In OFDM System

Kalman Filter Channel Estimation Based Inter Carrier Interference Cancellation techniques In OFDM System ISSN (Online) : 239-8753 ISSN (Print) : 2347-670 International Journal of Innovative Research in Science, Engineering and Technology Volume 3, Special Issue 3, March 204 204 International Conference on

More information

Performance Analysis of ICI in OFDM systems using Self-Cancellation and Extended Kalman Filtering

Performance Analysis of ICI in OFDM systems using Self-Cancellation and Extended Kalman Filtering Performance Analysis of ICI in OFDM systems using Self-Cancellation and Extended Kalman Filtering C.Satya Haritha, K.Prasad Abstract - Orthogonal Frequency Division Multiplexing (OFDM) is a multicarrier

More information

Chapter 2 Channel Equalization

Chapter 2 Channel Equalization Chapter 2 Channel Equalization 2.1 Introduction In wireless communication systems signal experiences distortion due to fading [17]. As signal propagates, it follows multiple paths between transmitter and

More information

ENHANCING BER PERFORMANCE FOR OFDM

ENHANCING BER PERFORMANCE FOR OFDM RESEARCH ARTICLE OPEN ACCESS ENHANCING BER PERFORMANCE FOR OFDM Amol G. Bakane, Prof. Shraddha Mohod Electronics Engineering (Communication), TGPCET Nagpur Electronics & Telecommunication Engineering,TGPCET

More information

Orthogonal frequency division multiplexing (OFDM)

Orthogonal frequency division multiplexing (OFDM) Orthogonal frequency division multiplexing (OFDM) OFDM was introduced in 1950 but was only completed in 1960 s Originally grew from Multi-Carrier Modulation used in High Frequency military radio. Patent

More information

A Comparative performance analysis of CFO Estimation in OFDM Systems for Urban, Rural and Rayleigh area using CP and Moose Technique

A Comparative performance analysis of CFO Estimation in OFDM Systems for Urban, Rural and Rayleigh area using CP and Moose Technique International Journal of Current Engineering and Technology E-ISSN 2277 4106, P-ISSN 2347 5161 2015 INPRESSCO, All Rights Reserved Available at http://inpressco.com/category/ijcet Research Article A Comparative

More information

Techniques for Mitigating the Effect of Carrier Frequency Offset in OFDM

Techniques for Mitigating the Effect of Carrier Frequency Offset in OFDM IOSR Journal of Electronics and Communication Engineering (IOSR-JECE) e-issn: 2278-2834,p- ISSN: 2278-8735.Volume 10, Issue 3, Ver. III (May - Jun.2015), PP 31-37 www.iosrjournals.org Techniques for Mitigating

More information

PERFORMANCE OF WIRELESS OFDM SYSTEM

PERFORMANCE OF WIRELESS OFDM SYSTEM PERFORMANCE OF WIRELESS OFDM SYSTEM WITH LS-INTERPOLATION-BASED CHANNEL ESTIMATION IN MULTI-PATH FADING CHANNEL A.Z.M. Touhidul Islam and Indraneel Misra Department of Information and Communication Engineering

More information

Channel Estimation and Signal Detection for Multi-Carrier CDMA Systems with Pulse-Shaping Filter

Channel Estimation and Signal Detection for Multi-Carrier CDMA Systems with Pulse-Shaping Filter Channel Estimation and Signal Detection for MultiCarrier CDMA Systems with PulseShaping Filter 1 Mohammad Jaber Borran, Prabodh Varshney, Hannu Vilpponen, and Panayiotis Papadimitriou Nokia Mobile Phones,

More information

Using Raised Cosine Filter to Reduce Inter Symbol Interference in OFDM with BPSK Technique

Using Raised Cosine Filter to Reduce Inter Symbol Interference in OFDM with BPSK Technique Using Raised Cosine Filter to Reduce Inter Symbol Interference in OFDM with BPSK Technique Khalid Aslam 1,*, Bodiuzzaman Molla 2, Md. Jashim uddin 3,Prof. Wlodek Kulesza 4 1 MSc EE Manager / Kundekonsulent

More information

Survey on Effective OFDM Technology for 4G

Survey on Effective OFDM Technology for 4G Survey on Effective OFDM Technology for 4G Kanchan Vijay Patil, 2 R D Patane, Lecturer, 2 Professor, Electronics and Telecommunication, ARMIET, Shahpur, India 2 Terna college of engineering, Nerul, India

More information

International Journal of Informative & Futuristic Research ISSN:

International Journal of Informative & Futuristic Research ISSN: Reviewed Paper Volume 3 Issue 7 March 2016 International Journal of Informative & Futuristic Research Study Of Bit Error Rate Performance And CFO Estimation In OFDM Using QPSK Modulation Technique Paper

More information

Improving Data Transmission Efficiency over Power Line Communication (PLC) System Using OFDM

Improving Data Transmission Efficiency over Power Line Communication (PLC) System Using OFDM Improving Data Transmission Efficiency over Power Line Communication (PLC) System Using OFDM Charles U. Ndujiuba 1, Samuel N. John 1, Oladimeji Ogunseye 2 1 Electrical & Information Engineering, Covenant

More information

Bit Error Rate Performance Evaluation of Various Modulation Techniques with Forward Error Correction Coding of WiMAX

Bit Error Rate Performance Evaluation of Various Modulation Techniques with Forward Error Correction Coding of WiMAX Bit Error Rate Performance Evaluation of Various Modulation Techniques with Forward Error Correction Coding of WiMAX Amr Shehab Amin 37-20200 Abdelrahman Taha 31-2796 Yahia Mobasher 28-11691 Mohamed Yasser

More information

Performance Comparison of Channel Estimation Technique using Power Delay Profile for MIMO OFDM

Performance Comparison of Channel Estimation Technique using Power Delay Profile for MIMO OFDM Performance Comparison of Channel Estimation Technique using Power Delay Profile for MIMO OFDM 1 Shamili Ch, 2 Subba Rao.P 1 PG Student, SRKR Engineering College, Bhimavaram, INDIA 2 Professor, SRKR Engineering

More information

Optimized BPSK and QAM Techniques for OFDM Systems

Optimized BPSK and QAM Techniques for OFDM Systems I J C T A, 9(6), 2016, pp. 2759-2766 International Science Press ISSN: 0974-5572 Optimized BPSK and QAM Techniques for OFDM Systems Manikandan J.* and M. Manikandan** ABSTRACT A modulation is a process

More information

Orthogonal Frequency Division Multiplexing (OFDM) based Uplink Multiple Access Method over AWGN and Fading Channels

Orthogonal Frequency Division Multiplexing (OFDM) based Uplink Multiple Access Method over AWGN and Fading Channels Orthogonal Frequency Division Multiplexing (OFDM) based Uplink Multiple Access Method over AWGN and Fading Channels Prashanth G S 1 1Department of ECE, JNNCE, Shivamogga ---------------------------------------------------------------------***----------------------------------------------------------------------

More information

MITIGATING CARRIER FREQUENCY OFFSET USING NULL SUBCARRIERS

MITIGATING CARRIER FREQUENCY OFFSET USING NULL SUBCARRIERS International Journal on Intelligent Electronic System, Vol. 8 No.. July 0 6 MITIGATING CARRIER FREQUENCY OFFSET USING NULL SUBCARRIERS Abstract Nisharani S N, Rajadurai C &, Department of ECE, Fatima

More information

Performance Analysis of OFDM for Different Digital Modulation Schemes using Matlab Simulation

Performance Analysis of OFDM for Different Digital Modulation Schemes using Matlab Simulation J. Bangladesh Electron. 10 (7-2); 7-11, 2010 Performance Analysis of OFDM for Different Digital Modulation Schemes using Matlab Simulation Md. Shariful Islam *1, Md. Asek Raihan Mahmud 1, Md. Alamgir Hossain

More information

ISSN: International Journal of Advanced Research in Computer Engineering & Technology (IJARCET) Volume 1, Issue 8, October 2012

ISSN: International Journal of Advanced Research in Computer Engineering & Technology (IJARCET) Volume 1, Issue 8, October 2012 Capacity Analysis of MIMO OFDM System using Water filling Algorithm Hemangi Deshmukh 1, Harsh Goud 2, Department of Electronics Communication Institute of Engineering and Science (IPS Academy) Indore (M.P.),

More information

CE-OFDM with a Block Channel Estimator

CE-OFDM with a Block Channel Estimator CE-OFDM with a Block Estimator Nikolai de Figueiredo and Louis P. Linde Department of Electrical, Electronic and Computer Engineering University of Pretoria Pretoria, South Africa Tel: +27 12 420 2953,

More information

CHAPTER 3 ADAPTIVE MODULATION TECHNIQUE WITH CFO CORRECTION FOR OFDM SYSTEMS

CHAPTER 3 ADAPTIVE MODULATION TECHNIQUE WITH CFO CORRECTION FOR OFDM SYSTEMS 44 CHAPTER 3 ADAPTIVE MODULATION TECHNIQUE WITH CFO CORRECTION FOR OFDM SYSTEMS 3.1 INTRODUCTION A unique feature of the OFDM communication scheme is that, due to the IFFT at the transmitter and the FFT

More information

Review of Channel Estimation Techniques in OFDM Sukhjit singh AP(ECE),GJIET Banur

Review of Channel Estimation Techniques in OFDM Sukhjit singh AP(ECE),GJIET Banur Review of Channel Estimation Techniques in OFDM Sukhjit singh AP(ECE),GJIET Banur Sukhjit43@gmail.com Abstract Channel estimation techniques are used in OFDM to investigate the channel to reduce Inter-carrier-

More information

REDUCING PAPR OF OFDM BASED WIRELESS SYSTEMS USING COMPANDING WITH CONVOLUTIONAL CODES

REDUCING PAPR OF OFDM BASED WIRELESS SYSTEMS USING COMPANDING WITH CONVOLUTIONAL CODES REDUCING PAPR OF OFDM BASED WIRELESS SYSTEMS USING COMPANDING WITH CONVOLUTIONAL CODES Pawan Sharma 1 and Seema Verma 2 1 Department of Electronics and Communication Engineering, Bhagwan Parshuram Institute

More information

Multi-carrier Modulation and OFDM

Multi-carrier Modulation and OFDM 3/28/2 Multi-carrier Modulation and OFDM Prof. Luiz DaSilva dasilval@tcd.ie +353 896-366 Multi-carrier systems: basic idea Typical mobile radio channel is a fading channel that is flat or frequency selective

More information

On the Spectral Efficiency of MIMO MC-CDMA System

On the Spectral Efficiency of MIMO MC-CDMA System I J C T A, 9(19) 2016, pp. 9311-9316 International Science Press On the Spectral Efficiency of MIMO MC-CDMA System Madhvi Jangalwa and Vrinda Tokekar ABSTRACT The next generation wireless communication

More information

Comparative Study on DWT-OFDM and FFT- OFDM Simulation Using Matlab Simulink

Comparative Study on DWT-OFDM and FFT- OFDM Simulation Using Matlab Simulink Comparative Study on DWT-OFDM and FFT- OFDM Simulation Using Matlab Simulink Manjunatha K #1, Mrs. Reshma M *2 #1 M.Tech Student, Dept of DECS, Visvedvaraya Institute of Advanced Technology (VIAT), Muddenahalli

More information

Research Letter Throughput of Type II HARQ-OFDM/TDM Using MMSE-FDE in a Multipath Channel

Research Letter Throughput of Type II HARQ-OFDM/TDM Using MMSE-FDE in a Multipath Channel Research Letters in Communications Volume 2009, Article ID 695620, 4 pages doi:0.55/2009/695620 Research Letter Throughput of Type II HARQ-OFDM/TDM Using MMSE-FDE in a Multipath Channel Haris Gacanin and

More information

Space Time Block Coding - Spatial Modulation for Multiple-Input Multiple-Output OFDM with Index Modulation System

Space Time Block Coding - Spatial Modulation for Multiple-Input Multiple-Output OFDM with Index Modulation System Space Time Block Coding - Spatial Modulation for Multiple-Input Multiple-Output OFDM with Index Modulation System Ravi Kumar 1, Lakshmareddy.G 2 1 Pursuing M.Tech (CS), Dept. of ECE, Newton s Institute

More information

Iterative Channel Estimation Algorithm in Multiple Input Multiple Output Orthogonal Frequency Division Multiplexing Systems

Iterative Channel Estimation Algorithm in Multiple Input Multiple Output Orthogonal Frequency Division Multiplexing Systems Journal of Computer Science 6 (2): 224-228, 2010 ISS 1549-3636 2010 Science Publications Iterative Channel Estimation Algorithm in Multiple Input Multiple Output Orthogonal Frequency Division Multiplexing

More information

Outline / Wireless Networks and Applications Lecture 7: Physical Layer OFDM. Frequency-Selective Radio Channel. How Do We Increase Rates?

Outline / Wireless Networks and Applications Lecture 7: Physical Layer OFDM. Frequency-Selective Radio Channel. How Do We Increase Rates? Page 1 Outline 18-452/18-750 Wireless Networks and Applications Lecture 7: Physical Layer OFDM Peter Steenkiste Carnegie Mellon University RF introduction Modulation and multiplexing Channel capacity Antennas

More information

INTERFERENCE SELF CANCELLATION IN SC-FDMA SYSTEMS -A CAMPARATIVE STUDY

INTERFERENCE SELF CANCELLATION IN SC-FDMA SYSTEMS -A CAMPARATIVE STUDY INTERFERENCE SELF CANCELLATION IN SC-FDMA SYSTEMS -A CAMPARATIVE STUDY Ms Risona.v 1, Dr. Malini Suvarna 2 1 M.Tech Student, Department of Electronics and Communication Engineering, Mangalore Institute

More information

Fuzzy logic based Adaptive Modulation Using Non Data Aided SNR Estimation for OFDM system

Fuzzy logic based Adaptive Modulation Using Non Data Aided SNR Estimation for OFDM system Fuzzy logic based Adaptive Modulation Using Non Data Aided SNR Estimation for OFDM system K.SESHADRI SASTRY* Research scholar, Department of computer science & systems Engineering, Andhra University, Visakhapatnam.

More information

BER ANALYSIS OF WiMAX IN MULTIPATH FADING CHANNELS

BER ANALYSIS OF WiMAX IN MULTIPATH FADING CHANNELS BER ANALYSIS OF WiMAX IN MULTIPATH FADING CHANNELS Navgeet Singh 1, Amita Soni 2 1 P.G. Scholar, Department of Electronics and Electrical Engineering, PEC University of Technology, Chandigarh, India 2

More information

Performance analysis of FFT based and Wavelet Based SC-FDMA in Lte

Performance analysis of FFT based and Wavelet Based SC-FDMA in Lte Performance analysis of FFT based and Wavelet Based SC-FDMA in Lte Shanklesh M. Vishwakarma 1, Prof. Tushar Uplanchiwar 2,Prof.MissRohiniPochhi Dept of ECE,Tgpcet,Nagpur Abstract Single Carrier Frequency

More information

Performance of OFDM System under Different Fading Channels and Coding

Performance of OFDM System under Different Fading Channels and Coding Bulletin of Electrical Engineering and Informatics ISSN: 2302-9285 Vol. 6, No. 1, March 2017, pp. 54~61, DOI: 10.11591/eei.v6i1.591 54 Performance of OFDM System under Different Fading s and Coding Pratima

More information

BER performance evaluation of conventional OFDM system and Wavelet Packet Modulator System in 4G LTE

BER performance evaluation of conventional OFDM system and Wavelet Packet Modulator System in 4G LTE IOSR Journal of Electronics and Communication Engineering (IOSR-JECE) e-issn: 2278-2834,p- ISSN: 2278-8735.Volume 11, Issue 4, Ver. II (Jul.-Aug.2016), PP 57-63 www.iosrjournals.org BER performance evaluation

More information

ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING BASED ON MULTIWAVELETS

ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING BASED ON MULTIWAVELETS ORTOONAL FREQUENCY DIVISION MULTIPLEXIN BASED ON MULTIWAVELETS Dr. Saad N. Abdul Majed Baghdad College of Economic Science University Department of Computer Science Iraq Prof. Dr. Walid A. Mahmoud University

More information

Performance Analysis Of OFDM Using QPSK And 16 QAM

Performance Analysis Of OFDM Using QPSK And 16 QAM Performance Analysis Of OFDM Using QPSK And 16 QAM Virat Bhambhe M.Tech. Student, Electrical and Electronics Engineering Gautam Buddh Technical University (G.B.T.U.), Lucknow (U.P.), India Dr. Ragini Tripathi

More information

International Journal of Emerging Technologies in Computational and Applied Sciences (IJETCAS)

International Journal of Emerging Technologies in Computational and Applied Sciences (IJETCAS) International Association of Scientific Innovation and Research (IASIR) (An Association Unifying the Sciences, Engineering, and Applied Research) International Journal of Emerging Technologies in Computational

More information

Doppler Compensated Front End Receiver Design for Underwater Acoustic Channels Using Mimo-Ofdm

Doppler Compensated Front End Receiver Design for Underwater Acoustic Channels Using Mimo-Ofdm RESEARCH ARTICLE \ OPEN ACCESS Doppler Compensated Front End Receiver Design for Underwater Acoustic Channels Using Mimo-Ofdm J. Jenisha 1, Ms. N. Subhashini, M. Tech, (Ph. D), 2 1 M.E student, Valliammai

More information

OFDM system: Discrete model Spectral efficiency Characteristics. OFDM based multiple access schemes. OFDM sensitivity to synchronization errors

OFDM system: Discrete model Spectral efficiency Characteristics. OFDM based multiple access schemes. OFDM sensitivity to synchronization errors Introduction - Motivation OFDM system: Discrete model Spectral efficiency Characteristics OFDM based multiple access schemes OFDM sensitivity to synchronization errors 4 OFDM system Main idea: to divide

More information

Principles and Experiments of Communications

Principles and Experiments of Communications 1 Principles and Experiments of Communications Weiyao Lin Dept. of Electronic Engineering Shanghai Jiao Tong University Textbook: Chapter 11 Lecture 06: Multicarrier modulation and OFDM Multicarrier Modulation

More information