Research On Equalization Algorithms In 60GHz Wireless Communication System

Researches on low-power and low-complexity equalization are becoming increasingly active for applying 60 GHz high-speed wireless communications systems in handheld devices. In this thesis, 60 GHz wireless communication system is the main explore topic,and the thesis focus on low-power and low-complexity equalization algorithm especially time domain equalization. This thesis consists of five parts.The first chapter introduces the development status of 60 GHz communication system. Then, it simply explains equalization algorithms’ past and present. Still, main contributions and innovations of this thesis are showed. Finally, we demonstrate structural arrangement of the thesis.The second chapter describes the basic situations of 60 GHz communications system, and it consists of spectrum allocation, the propagation characteristics of the channel, channel measurement, the main criteria of 60 GHz system used in our project.The third chapter studies the symbol spaced equalizer, including frequencydomain zero forcing equalization and minimum mean square error equalization, time-domain minimum mean square error equalization, time-domain decision feedback equalization, partial feedback equalizer and complete feedback equalizer. Finally, this chapter compares complexity of various equalization algorithms.The fourth chapter studies fractionally spaced equalizer. Fractionally spaced equalizer means a symbol has not only one sampling point, which will greatly reduce the complexity of synchronizing. This chapter researches the principle of fractionally spaced equalizers and simulates its performance.The fifth chapter is the summary of full text and the outlook for future work.