DS-CDMA中的相干波形消扰法

Method of Interference Cancellation by Correlated Waveforms on DS-CDMA

在 DS-CDMA中应用相干波形消扰法 ,即利用并行信号噪声的相关性进行噪声相消 .分析结果表明 ,可以完全消除多址干扰和单频正弦干扰 .而且 ,不要求扩频码之间相互正交 ,平均发射功率可降低一半 .大大减少了多径干扰 ,增加了系统容量 .系统简单 。

Various interferences in DS-CDMA be can be cancellated by correlated waveforms, that is, using the correlations of nosies' of two parellel signals to cancellate the interferences.The multi-address and single frequency interences can be totally cancellated.Multi-path interference can be mostly cancellated. There is no requirement of orthogonality for the spread specturn codes. Also, the average transmitting power can be reduced by half. System capacity is enlarged highly.The system structure is simple, and easier to realized.