根据混沌逆映射的二值性 ,提出了一种基于逆映射的混沌数字通信系统及其实现方案。以Logistic映射为例 ,首次从理论上分析了其在噪声信道下的误码性能。理论分析和仿真结果表明 :逆映射序列具有良好的相关性能 ,误码性能曲线仿真值与理论值相符 According to the binary nature of chaotic inverse mapping, a chaotic digital communication system based on inverse mapping and its implementation scheme are proposed. Taking Logistic mapping as an example, we first analyze the BER performance in noisy channel theoretically. The theoretical analysis and simulation results show that the inverse mapping sequence has good correlation performance and the simulated error performance curve is consistent with the theoretical value