中文摘要：

为了有效实现立体声广播的远距离传播，在调幅广播的基础上提出利用反相对称调制法来实现调幅立体声广播，并与现行调幅广播兼容，且设备复杂度不高。反相对称法利用调幅信号上下边带的强相关性可在同一载频传输两路信号而互不干扰；实验和仿真结果表明左右声道分离度达到了32dB，证实了该系统的可行性。

英文摘要：

In order to realize the long-distance transmission of stereo radio, PISM is proposed to realize AM stereo radio based on AM radio. The method is compatible with AM radio and with low complexity. Taking advantage of the strong correlation of AM signal, PISM can transmit two-way signal without any interference in one carrier frequency. The research and simulation results illustrate that the separation between left and right channel goes up to 32dB, so the feasibility of system is proved.