Abstract:Diversity receiving technology is mainly used to solve the problems such as signal fading during wireless transmission, adjacent channel interference and co-channel interference during wireless reception, which can improve the quality of received signal effectively. This paper studies the multi-channel receiving signal synchronization and diversity combining algorithm on distributed platform, and then proposes a method for multi-channel signal pre-synchronization in-phase adjustment for different modulation types. In order to determine the weight of the maximum ratio combining, the paper estimates the Signal-to-Noise Ratio(SNR) of each channel before the merger. According to theoretical analysis, the maximum combined gain that can be obtained for the N-channel signal is 10lgN dB. The results of simulation are consistent with theoretical analysis, which proves the effectiveness and feasibility of this algorithm.