Bit decision algorithm for DS/SS based on software radio

The design of bit decision algorithm is the key to the correct receiving of the direct sequence spread spectrum (DS/ SS) . An algorithm for bit decision considering the influence of initial phase is provided based on software radio technology. The algorithm has a high gain of spread spectrum processing and is applicable to the case of a very low (lower than - 20dB) signal-to-noise ratio and the severe limitation on system size and power. The simulation test shows that its computation is simple and its BER is low in a very harsh environment.