一种基于第一路信息流解调信息进行双流信号解调的方法

A Method for Dual-Stream Signal Demodulation Based on the Demodulation Information of the First Information Stream

为了降低双流通信系统接收端的信号处理复杂度,提出了一种基于第一路信息流解调信息进行双流信号解调的方法。该方法在接收端对接收到的两路信息流中的第一路解调后,获得相应的解调信息,并将该解调信息迭代回求出第一路信息流对应的发送信号以获得反馈符号流;再根据反馈符号流依次进行干扰消除和合并以获得合并信号,并据此对第二路信息流进行单符号解调处理以获得第二路信息流的概率软信息;最后将概率软信息进行解码以获得第二路信息流的解调信息。该方法降低了处理复杂度,可以保证接收端的解调性能。

In order to reduce the signal processing complexity at the receiving end of a dual-stream communication system, a method for dual-stream signal demodulation based on demodulation information of first information stream is proposed. First, the method obtains the corresponding demodulation information after demodulating the first channel of the received two information streams at the receiving end, and iterates the demodulation information back and obtains the transmitted signal corresponding to the first channel of information stream to obtain the feedback symbol stream. Then, according to the feedback symbol stream,the interference cancellation and combination are performed in turn to obtain the combined signal, and the second channel information stream is subjected to single symbol demodulation processing to obtain the probability soft information of the second channel information stream. Finally, the receiving end decodes the probability soft information to obtain the demodulation information of the second information stream. The method proposed reduces the processing complexity and can ensure the demodulation performance of the receiving end.