MIMO 技术在广电无线业务中的应用前瞻及其测试方法的国际最新动态 吴醒峰博士 IEEE 高级会员 广播电视规划院 (ABP)

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1 MIMO 技术在广电无线业务中的应用前瞻及其测试方法的国际最新动态 吴醒峰博士 IEEE 高级会员 广播电视规划院 (ABP) 1

2 Outlines I. 什么是 MIMO? II. 什么是 MIMO OTA? 创新的无线测试技术! III. ABP 对 MIMO OTA 国际标准进程的贡献 IV. 总结 -Annex: Presentation in Ghent, Belgium 2

3 MIMO 是什么? MIMO 带来了什么?. 2km. 64 antenna elements For 3D movies / realtime streaming of Ultra High-Definition Content Presently: Optical Fiber: 20Mbps LTE: 35Mbps Resource : 3

4 MIMO 之于无线通讯. Resource : 4

5 MIMO 之于电视广播? In 2006 DVB - T2 In 2006/2007. Resources: Peter Moss, BBC, "MIMO Technology in Broadcasting",Cagliari 4-5 March,

6 MIMO 之于无线家庭与无线客厅 - 以 MIMO 为基础的 WiFi 技术组建无线娱乐中心 ( 超高清 4K) ABP Wireless Home based on 1. CATV Networks 2. Resource : Figures are from internet. 6

7 Outlines I. 什么是 MIMO? II. 什么是 MIMO OTA? 创新的无线测试技术! III. ABP 对 MIMO OTA 国际标准进程的贡献 IV. 总结 -Annex: Presentation in Ghent, Belgium 7

8 为什么要做测试? 什么是 性能测试?? R&D needs to speed up performance design circle to catch up competitors. The MIMO capable equipments are already in market (ALL LTE). Operators need to classify the candidates (good/nominal/bad). VS. Resource : Figures are from internet. 8

9 MIMO 的秘密 / MIMO OTA 很复杂吗? Propagation information -- Multi-path Rebuild the Environment -- Channel modeling & Emulation. Resource : Figures are from documents of Anite. 9

10 谁在关注 MIMO OTA? Internationally: Intel (Deeply involved), Qualcomm, Apple (always silent), Nokia, Motorola, LG, Sony, NTT DoCoMo (Deeply involved), AT&T, Verizon, Orange Anite, Spirent, Agilent, R&S, ETS, Satimo Domestic: Chipset supplier:?? Handset supplier:?? Operators: China Mobile, China Telecom ABP (Deeply involved), CATR Resource : Figures are from 3gpp documents and suppliers of solution. 10

11 Outlines I. 什么是 MIMO? II. 什么是 MIMO OTA? 创新的无线测试技术! III. ABP 对 MIMO OTA 国际标准进程的贡献 IV. 总结 -Annex: Presentation in Ghent, Belgium 11

12 MIMO OTA 的国际标准化与学术组织 International academy and standardization organization: 3GPP : RAN 4, COST IC1004 : TWGO CTIA : MOSG ABP 有多少 贡献 被认可度? 12

13 ABP 在欧洲 IC1004 与北美 CTIA 的文稿输出 ( 英文 ) Contributions of ABP: Xingfeng Wu, Senior member, IEEE, Zhi Cao, Fan Yang, Yujuan Ma, Chi Zhang, Lei Jin, Zhihua Zhang, Proposal and Verification of Single Cluster Solution for MIMO OTA in CTIA IL_IT Test, IC1004 TD(13)08028, Ghent, Belgium, September, Xingfeng Wu, CTIA contribution MOSG130803, Updates to MOSG130710, August, Xingfeng Wu, et al., CTIA contribution MOSG130710, Proposals of Single Cluster Approach for Phase 3 Inter-Lab/Inter-Technique Test Methodology, July, Xingfeng Wu, et al., CTIA contribution MOSG130611, CTIA Inter-Lab/Inter-Technique Test Campaign Report: Single Cluster Channel Model Validation and OTA Results in ABP, June, Xingfeng Wu, Zhi Cao, Fan Yang, Yi Wang, Yixing Li, Jianhui He, Yang Gao, MIMO OTA Measurement System Analysis Proposals for a Specific Laboratory, IC1004 TD(12) 05009, Bristol, United Kingdom,24-26 September,

14 Outlines I. 什么是 MIMO? II. 什么是 MIMO OTA? 创新的无线测试技术! III. ABP 对 MIMO OTA 国际标准进程的贡献 IV. 总结 -Annex: Presentation in Ghent, Belgium 14

15 ABP 受邀在比利时的英文演讲 (IC1004 会议 ) 15

16 Question 2 : Balance between Capability & Cost 3D (Multi-Probe based): Most powerful: capable of 3D channel model (user defined or future standard) Most expensive (could be over $ 3 Millions):32 channels, larger Chamber is recommended 2D (full-ring in azimuth plane): Simplified from 3D by cutting elevation dimension out. Still expensive (could be over $ 2 Millions ): 16 channels, separated chamber is recommended. Single Cluster : Simplified from 2D by unifying AoAs for each cluster. Much cheaper (could be efficient by utilizing the former investment: 6 channels, former chamber sharing. Resource : Figures in the right are from Anite: Propsim Over-The-Air Testing 16

17 Single Cluster setup in ABP 1. Channel Emulator 2. Auto-Test Software 3. Power Amplifier & Probe Antenna 4. Anechoic Chamber 5. Instruments VNA SHARING Signal Generator Frequency Analyzer LTE enodeb Emulator MIMO OTA SISO OTA 17

18 Lots of tricky parts need to be confirmed Calibration : Amplitude? Phase? Reflection : antenna carrier and rail? Signal drifting : PA and CE? Antenna coupling in this chamber? Unifying Post processing of Software 18

19 ABP works for CTIA IL/IT phase 3 : 3-axis rotation Proposals of ABP SC Refers to : [1] Xingfeng Wu, Lei Jin, Yujuan Ma, Zhihua Zhang, ABP and HWA-TECH, CTIA contribution MOSG130710, "Proposals of Single Cluster Approach for Phase 3 Inter-Lab/Inter-Technique Test Methodology", 11 July,

20 Components survey and verification Coupling between probes: V-V ; H-H ; V-H : Conclusion : Maximum is Self-CrossPolarization coupling of probe 3, roughly -18dB at 1GHz frequency. (Which means 1.58% power is received by the other polarization in the probe 3.) 20

21 ABP Single cluster Channel validation PDP UMi : Refers to : Xingfeng Wu, Fan Yang, Zhi Cao, Jingfeng Feng, Yujuan Ma, Chi Zhang, Zhihua Zhang, ABP and HWA-TECH, CTIA contribution MOSG130611, "CTIA Inter-Lab/Inter-Technique Test Campaign Report: Single Cluster Channel Model Validation and OTA Results in ABP", June,

22 Channel validation Spatial Correlation ---- Target & Emulated Differences between UMi & UMa ---- in MultiCluster : There is no difference between UMi and UMa in Single Cluster : Differences between Single Cluster and MultiCluster : Measured spatial correlation curves could be faraway from target, or wrong because of: Constraint condition of system components Components are running in unexpected conditions. System is not calibrated. CIR samples are not enough 22

23 Channel validation Spatial Correlation ---- Target / Emulated / Measured in ABP UMi Refers to : Xingfeng Wu, Fan Yang, Zhi Cao, Jingfeng Feng, Yujuan Ma, Chi Zhang, Zhihua Zhang, ABP and HWA-TECH, CTIA contribution MOSG130611, "CTIA Inter-Lab/Inter-Technique Test Campaign Report: Single Cluster Channel Model Validation and OTA Results in ABP", June,

24 CTIA IL/IT phase 3 : Scale Verification of ABP SC Unifying definition and verification of system scale Refers to : RS-EPRE : Preliminary test is done in ABP. SIR : Measurement (Channel power): dbm, Calculated (Target): dBm, Delta : db [1] Xingfeng Wu, Lei Jin, Yujuan Ma, Zhihua Zhang, ABP and HWA-TECH, CTIA contribution MOSG130710, "Proposals of Single Cluster Approach for Phase 3 Inter-Lab/Inter-Technique Test Methodology", 11 July, [2] Xingfeng Wu, ABP, CTIA contribution MOSG130803, " Updates to MOSG130710", 4 August, Probe Number [3] Anatoliy Ioffe, Xavier Carreño, Intel Corporation, CTIA contribution MOSG130308R2, "Text proposal for the definition of SINR control", 24 June, 2013 [4 ] Ronald Borsato, Spirent Communications CTIA contribution MOSG130714, Text Proposal for Inter-Lab/Inter-Technique OTA Performance Comparison Testing for MIMO Devices using Equal SIR Per Probe in the Anechoic Single and Multi-Cluster Radiated Test Environment, 18 July, Relative Power in db SNR and Relative Probe Powers with Spatial Channel & Fixed SNR 15.0 db 15.0 db Sum of Signal Powers = 0 db Sum of Noise Powers = -15 db 15.0 db 15.0 db 15.0 db 15.0 db 15.0 db 15.0 db 24

25 Preliminary results of Single Cluster ---- Classify DUT in different channel model ABP Single Cluster Classifications of DUT in CTIA IL/IT phase 2. Refers to : Xingfeng Wu, Fan Yang, Zhi Cao, Jingfeng Feng, Yujuan Ma, Chi Zhang, Zhihua Zhang, ABP and HWA-TECH, CTIA contribution MOSG130611, "CTIA Inter-Lab/Inter-Technique Test Campaign Report: Single Cluster Channel Model Validation and OTA Results in ABP", June,

26 Reference ABP 的 被认可度? Pekka Kyösti, Tommi Jämsä, and Jukka-Pekka Nuutinen, Channel Modelling for Multiprobe Over-the-Air MIMO Testing, International Journal of Antennas and Propagation, vol. 2012, Article ID , 11 pages, Doug Reed. Experiments with Spatial Correlation for Evaluating OTA Techniques, in COST2100, TD(09)856, Valencia, Spain, May 2009, W. Fan, X. Carreño, J. Nielsen,K. Olesen, M. Knudsen, G. Pedersen. Measurement Verification of Plane Wave Synthesis Technique Based on Multi-probe MIMO-OTA setup, Proc. Vehicle Technology Conference (VTC 2012-Fall), 2012 IEEE 76th, Québec City, Canada, September 3-6, W.Fan, J. Nielsen, X. Carreno, M. Knudsen, G. Pedersen. "Impact of probe placement error on MIMO OTA test zone performance," 2012 Loughborough Antennas & Propagation Conference, Loughborough, UK, November 12-13, Xavier Carre no, Wei Fan, Jesper Ø. Nielseny, Jagjit Singh Ashta, Gert F. Pederseny, Mikael B. Knudsen,"Test Setup for Anechoic Room based MIMO OTA Testing of LTE Terminals", IC1004 TD(12) 05078, Bristol, United Kingdom, September, 2012 Measurement of radiated performance for MIMO and multi-antenna reception for HSPA and LTE Terminals (Release 10), 3GPP TR , Rev May 2011 MOSG120521R4, Inter-Lab/Inter-Technique OTA Performance Comparison Testing for MIMO Devices (AT&T), August 2012 Xingfeng Wu, Zhi Cao, Fan Yang, Yi Wang, Yixing Li, Jianhui He, Yang Gao, MIMO OTA Measurement System Analysis Proposals for a Specific Laboratory, IC1004 TD(12) 05009, Bristol, United Kingdom,24-26 September, 2012 T. Sakata, A. Yamamoto, K. Ogawa, and J.-i. Takada, MIMO channel capacity measurement in the presence of spatial clusters using a fading emulator, in Personal, Indoor and Mobile Radio Communications, 2009 IEEE 20th International Symposium on, sep. 2009, pp Matt A. Mow, Bo Niu, Robert W. Schlub, Ruben Caballero, inventor; 2011 Nov. 3. TOOLS FOR DESIGN AND ANALYSIS OF OVERTHE-AIR TEST SYSTEMS WITH CHANNEL MODEL EMULATION CAPABILITIES. United States patent US 2011/ P. Kyosti, J.-P. Nuutinen, and T. Jamsa, MIMO OTA test concept with experimental and simulated verification, in Antennas and Propagation (EuCAP), 2010 Proceedings of the Fourth European Conference on, apr.2010, pp Atsushi Yamamoto, et al., "Procedure of designing the structural parameters of a spatial fading emulator with a Laplacian angular power spectrum of incoming wave", COST 2100 TD(10)10016, Athens, Greece, February N. DOCOMO. (2009, Aug.) R : Experimental comparison of MIMO OTA testing methodologies. [Online]. Available: E.-L. Elektrobit. (2009, Aug.) R : Experimental MIMO OTA throughput measurements with a MIMO device. [Online]. Available: J. Kallankari, S. Laukkanen, J. Nuutinen, P. Ky osti, and A. Scannavini, Test plan for OTA throughput comparison measurements in a fading channel environment, in COST2100, 9th MCM. Vienna, Austria: Nokia, Elektrobit and Satimo, Oct. 2009, TD(09)964. [Online]. Available: D. S. Baum, et al, An interim channel model for beyond-3g systems:extending the 3GPP spatial channel model (SCM), in Proceedings of the 61st IEEE Vehicular Technology Conference (VTC 05), vol. 5, pp , Stockholm, Sweden, May-June Q.H. Spencer, B.D. Jeffs, M.A. Jensen, A.L. Swindlehurst, Modeling the Statistical Time and Angle of Arrival Characteristics of an Indoor Multipath Channel, IEEE Journal on Selected Areas in Communications, Vol.18, No.3, pp , March T. Taga, Analysis for Correlation Characteristics of Antenna Diversity in Land Mobile Radio Environments, IEICE Trans. B-II, J73B-II, 12, pp , Dec T. Taga, A Study on Performance Evaluation Method of MIMO Antennas in Multipath Propagation Environments, IEICE Technical Report, AP , Jan T. Taga, K. Tsunoda, H. Imahori, M. Aikawa, A Method of Estimating the Correlation Coefficient of Antenna Diversity in Mobile Radio Communications, IEICE Technical Report, SAT88-43, 1988 J. C. Liberti, Jr. and T. S. Rappaport, Smart Antennas for Wireless Communications: IS-95 and Third Generation CDMA Applications, Sub-Section 6.1.3, Prentice Hall, Y. Karasawa, MIMO Propagation Channel Modeling, IEICE Trans. B, J86-B, No.9, pp , Sept Y. Karasawa, Radio Propagation of Digital Mobile Communications, Section 4.4, Colona Publishing Co., Ltd., K. Sakaguchi, J. Takada, Measurement, Analysis, and Modeling of MIMO Propagation Channel, IEICE Trans. B, J88-B, No.9, pp , Sept R.H. Clark, A statistical theory of mobile radio reception, Bell Labs System Technical Journal, Vol. 47, pp , July-August 1968.

27 Outlines I. 什么是 MIMO? II. 什么是 MIMO OTA? 创新的无线测试技术! III. ABP 对 MIMO OTA 国际标准进程的贡献 IV. 总结 -Annex: Presentation in Ghent, Belgium 27

28 总结 未来的高速无线通信中,MIMO 技术将无处不在. 作为一个带来变革的无线测试技术,MIMO OTA 对应用者的技术要求, 也显而易见地区别于以往的普通测试技术 天线与电波传播, 信道建模, 优化理论, 随机过程, 复变函数 通过 2 年的努力与专注,ABP 毫无疑问地已处于国内 MIMO OTA 研究的前列 由于国际标准尚未制定,ABP 预计将于 2014 年第三季度提供正式的 MIMO OTA 认证服务 我们已提出标准的具体建 议, 而非 跟踪! 实验室资源随时开放 : 商业委托评估与测试, 科研项目 28

29 Thank you for your time! Xingfeng (Benny) Wu, Ph.D, IEEE Senior Member Academy of Broadcasting Planning, SARFT, Beijing, China. tel : , , fax : wuxingfeng@abp.gov.cn, wuxingfeng@gmail.com URL : 29