关键词: 多径信道, 通信, 信道均衡, 扩频

Abstract:

In the space multipath channel vertical linear array communication,the error rate is high due to the multi array element code interference results in channel imbalance,thus the need for channel equalization design.By the traditional method,the random code spreading method is used for the communication channel equalization,leading to high nonlinearity distortion and poor balance effect of the spread spectrum signal.A linear array of communication channel equalization algorithm based on direct sequence spread spectrum is proposed using recombinant multiple vertical line array size component received spread spectrum signal after high-level amplification and mixing,and origin of the synchronization of pseudo random sequence of intermediate frequency spread spectrum modulation signal to realize channel equalization.Simulation results show that the vertical line array communication by this algorithm exhibits good channel equalization and code interference suppression performance by effectively reducing the bit error rate and improving the communication quality.

Key words: multipath channel;communication;channel equalization;spread spectrum