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从理论上分析了在QPSK系统中用判决反馈自适应均衡器抑制多音干扰的性能,给出了均衡器最佳系数与最小均方误差计算公式,指出QPSK系统中的均衡器能同时起到抑制多音干扰的作用。利用此性能可使设备简化。
The performance of polyphonic interference suppression in QPSK system using decision feedback adaptive equalizer is theoretically analyzed. The formula for calculating the optimal coefficient and the minimum mean square error of equalizer is given. It is pointed out that the equalizer in QPSK system can work simultaneously Suppression of polyphonic interference. Use this feature to make the device easier.