Reseach On Fractional Spaced Equalization Algorithms In 60GHz Single Carrier Communication System

With the rapid increase of mobile data volume and the widespread popularity of intelligent terminal, the communications is in urgent need of technologies with higher speed, lower latency and larger capacity. 60 GHz wireless communication system has many advantages, such as its tremendous bandwidth and high security, which make it become one of the most potential mobile communication technologies in the future. However, 60 GHz wireless communication system also faces many challenges. One of the problems is ISI, which is caused by sampling timing deviation and multipath effect.Equalization algorithm that could compensate ISI is a focus of this thesis. Based on the models and parameters in IEEE 802.11 ad, the simulation and implementation of the fractional spaced equalization algorithm have been completed in the thesis.Firstly, the thesis studies the traditional equalization theory and algorithm and compares the differences of the symbol spaced equalization and the fractional spaced equalization. For band-limited communication system, shaping filter will cause additional transmission bandwidth. It will cause spectrum aliasing and introduce additional ISI while sampling in symbol rate. But the fractional spaced equalization could effectively avoid the spectrum aliasing. It’s the reason why the fractional spaced equalization can compensate ISI induced by sampling timing deviation.Secondly, a new data block equalization algorithm based on overlap-cut method to reduce the sizes of the FFT and IFFT in traditional data block equalization algorithms has been proposed in this thesis. Combined with the fractional spaced equalization algorithm, a new equalization algorithm, which has low implementation complexity and is very suitable for the hardware design in 60 GHz wireless communication system, has been proposed in the thesis.Finally and most importantly, the equalizer that is suitable for 60 GHz wireless communication system has been designed in this thesis according to the fractional spaced equalization algorithm. In addition, the verification of the RTL simulation, synthesis and the performance in the platform has been completed and the results meet the demands of 60 GHz wireless communication system.