基于收缩映射混沌键控信号的相关解调

Coherent Demodulation of Chaos Shift Keying Signals Based on Contraction Maps

提出了一种基于收缩映射的混沌键控信号解调方案，给出了系统误码性能的数学表达式。该方案将所传输的数字信号映射为混沌系统的两种不同的同步相位，再利用接收端提供的同步信号将其提取出来。仿真结果表明，该方案能够快速实现同步，有较强的鲁棒性。

In this paper, a coherent demodulation scheme for chaos shift keying signals is presented, and formula for bit error rate is given. Digital signals to be transmitted are mapped into two synchronous phases of chaotic systems and detected by synchronous signals at the receiver. Simulations indicate that this scheme can synchronize fast, be robust to noise and easily to be implemented.