PROPAGATION MEASUREMENT BASED STUDY ON RELAY NETWORKS

Transcription

1 ßv : TECHNISCHE UNIVERSITÄT ILMENAU Fakultät für Elektrotechnik und Informationstechnik der Technischen Universität Ilmenau PROPAGATION MEASUREMENT BASED STUDY ON RELAY NETWORKS M. Sc. Aihua Hong Dissertation zur Erlangung des akademischen Grades Doktor-Ingenieur (Dr.-Ing.) Anfertigung im: Fachgebiet Elektronische Messtechnik Institut für Informationstechnik Fakultät für Elektrotechnik und Informationstechnik Gutachter: Prof. Dr.-Ing. habil. Reiner S. Thomä (TU-llmenau) Prof. Dr.-Ing. Wolfgang Koch (Universität Erlangen-Nürnberg) Dr.-Ing. Egon Schulz (Huawei Technologies Duesseldorf GmbH) Vorgelegt am: Verteidigt am: urn:nbn:de:gbv:ilml

2 CONTENTS Title Abstract Kurzfassung Acknowledgments Contents List of Figures List of Tables i iii v vii ix xiii xvii 1. Introduction Problem statement Contributions and overview Main contributions Overview 6 2. Channel modeling methodology of relay networks Background and own contributions Background and state-of-the-art Own contributions Channel modeling process MIMO channel modeling approaches Channel modeling process for relay networks System requirements Comparison among the state-of-the-art MIMO channel models Modeling goals The definition of Large Scale Parameters (LSP) and their correlation properties Usage of the correlation models of LSP Experimental channel evaluation and modeling Background and own contributions Background and state-of-the-art Own contributions 36

3 x CONTENTS 3.2 Propagation scenarios Urban scenarios Ul scenario: urban micro-cell U2 scenario: urban macro-cell Indoor scenarios II scenario: indoor corridor Relay measurement campaigns Broadband radio channel sounding: technique and equipment Micro-cell to macro-cell urban scenario: Ul and U Indoor corridor scenario: II Extraction procedure of LSP and their correlation properties Extraction procedure of the LSP values Extraction algorithms of the LSP values The impact of the setting parameters on the LSP values Different noise cut levels Different lengths of a Space Time (ST) averaging window and different overlapping ratios Extraction methodology of the correlation models of LSP Experimental results Micro-cell to macro-cell urban scenarios (Ul and U2) Statistical distribution of LSP The intra-site correlation of the transformed LSP The inter-sector correlation of the transformed LSP The inter-site correlation of the transformed LSP Indoor corridor scenario II Statistical distribution of LSP The intra-site correlation of the transformed LSP The inter-sector correlation of the transformed LSP The inter-site correlation of the transformed LSP Main findings System structure of cooperative Multiple Access Relay Networks (MARN) Background and own contributions Background and state-of-the-art Own contributions Simulation assumptions System model of MARN Forwarding strategies The Amplify-and-Forward (AF) strategy The Decode-and-Forward (DF) strategy Proposed protocols Relaying protocol design 83

4 Direct transmission without relaying 83 АЛЛ.2 Always relaying protocol Adaptive relaying protocol with limited feedback Multiple Access Coding (MAC) Symbol-wise super-positioning Re-transmission at the second time-slot MMSE detection JU MMSE detection JU MMSE Д-criterion JU MMSE H-criterion ML detection Error detection aided signal selection Numerical simulation results of an example scenario MAC for the direct transmission JU MMSE for the interference cancellation The functionality of the RS: the AF relay and the DF relay Error detection aided signal selection Relay protocol with limited feedback Performance verification of cooperative MARIM Background and own contributions Background and state-of-the-art Own contributions Simulation channels Relay measurement campaign Application of raw measurement data for the performance evaluation Application of the relay channel model for the performance evaluation Simulation scenarios and parameters Measurement data based performance verification Impacts of the small scale propagation phenomena Small Scale Fading (SSF) Influence of the antenna element spacing at the Base Station (BS). Ill Impacts of the large scale propagation phenomena Large Scale Fading (LSF) Path Loss (PL) plus LSF Power allocation schemes Relay channel model based performance verification Positioning of the Relay Station (RS) Conclusions 121 Appendix A. Comparison among the state-of-the-art Multiple-Input Multiple-Output (MIMO) channel models 125

5 xü CONTENTS Appendix B. Examples of MAC 127 Appendix C. Solution of the Minimum Mean Square Error (MMSE) criterion 129 Appendix D. Glossary of operators, symbols, and acronyms 131 D.l Mathematical operators 131 D.2 Acronym 131 D.3 List of frequently used symbols 133 Bibliography 139 Theses 149 Erklärung 151