| 60GHz wireless communication technology has many incomparable advantages compared to the wireless communication technology currently in use. OFDM (orthogonal frequency division multiplexing) and higher order modulation techniques can improve the the60GHz bandwidth efficiency and transmission rate; however, subject to cost constraints, the60GHz frequency synthesizer’s phase noise level is high, seriously affect the performance of the60GHz OFDM system. Thus, study of phase noise compensation technology in60GHz communications system has important theoretical significance and application prospects.This paper first introduces the basic principles of OFDM and overview of development, then expounded the basic concepts of the phase noise analysis in the study on the basis of the structural characteristics of the60GHz band frequency synthesizer, the more accurate phase noise model. Based on the phase noise characteristics of60GHz OFDM communication system, the paper proposes a phase compensation scheme to simplify receiver design; improved quantum genetic algorithm of this program, At last we propose the system receives performance simulation analysis. Simulation results show that the phase noise compensation scheme based on quantum genetic algorithm improve the BER performance, compared to the other phase noise compensation scheme.This paper is divided into6chapters, each chapter is organized as follows:The first chapter provoid a basic introduction to the OFDM system and, OFDM key technology.The second chapter describes the history and development of the the60GHz communications system, introduced the definition of phase noise causes a statistical model, focusing on analysis of the phase noise impact60GHz OFDM system, and research60GHz OFDM communication system phase noise compensation algorithm the significance and necessity of the demonstration.The third chapter describes the current phase noise compensation technology, focusing on analysis of several phase noise compensation algorithm in OFDM systems, and simulation and performance analysis, compare the pros and cons, on this basis, based maximum a posteriori phase noise compensation scheme.The fourth chapter analyzes the theoretical framework of quantum genetic algorithm and genetic algorithm and quantum computing, and a combination of both applications are introduced. A60GHz OFDM system phase noise compensation scheme based on quantum genetic algorithm, simulation modeling and analysis of the performance of the pros and cons of the different contrast compensation algorithm and complexity. Chapter5is Summary and Outlook. |
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