将比特交织和调制分集引入到 Turbo乘积编码调制中 ,提出一种具有良好抗衰落性能的编码调制机制 .分析了该机制的误比特率性能 ,导出了适合迭代译码的软输入软输出 ( SISO)度量算法 ,给出了一种简单有效的星座旋转角度设计方法 .仿真结果表明 ,与传统 Turbo乘积编码调制相比 ,该机制在瑞利衰落条件下可获得 2 .5　 d B以上的编码增益 ,为 Turbo乘积码和高效调制结合应用于无线通信系统提供了良好的解决方法 The bit interleaving and modulation diversity are introduced into Turbo product code modulation, and a coding modulation scheme with good anti-fading performance is proposed.The bit error rate performance of this scheme is analyzed and the soft input soft output (SISO ), A simple and effective design method of the rotation angle of the constellation is given. The simulation results show that the proposed scheme can obtain a coding gain of more than 2.5 d B under Rayleigh fading compared with the traditional Turbo product code modulation , Provides a good solution for the combination of Turbo product codes and efficient modulation in wireless communication systems