去耦合滤波器同频干扰抑制接收机研究

Study on decoupled filter based co-channel interference cancellation receiver

针对蜂窝网络的小区间同频干扰问题,对去耦合同频干扰滤波器进行研究.该滤波器主要是对采样数据中的干扰和噪声进行白化,期望信号部分通过非线性均衡器解出符号序列.同时,根据期望信号的调制类别以及被干扰覆盖情况,研究对应的最佳接收机.仿真结果表明:所设计接收机能够在复杂度和最佳性能之间进行很好的折衷.

For the inter-cell co-channel interference problems in cellular networks, the paper studies the decoupled filter aiming at the cancellation of co-channel interference. The filter is imposed on whitening the interference and the noise, with the remained desire signal giving off the original symbols based on a non-linear equalization. Based on the discussion on the improvement of the filter, mainly according to the modulation of desire signal and the coverage of interference signal, different receivers are designed. Performance simulation enables a conclusion that the designed filter can be quite good trade-off in complexity and best perform-ance.