随着通信技术的发展，混沌通信技术以其抗多径衰落以及保密性强的特性引起了众多研究人员的兴趣，其中差 分混沌移位键控(Differential Chaos Shift Keying, DCSK)是研究最广的一种非相干数字调制方案。广义载波索引差分混沌移位 键控(Generalized Carrier Index Differential Chaos Shift Keying,GCI-DCSK)在 DCSK 的基础上融入了索引调制的技术，进一步 提高了系统性能。将GCI-DCSK调制方案与中继协作技术相结合，扩大了通信网络的覆盖范围，提高了通信质量。

With the development of communication technology, chaotic communication technology has attracted the interest of many researchers for its resistance to multipath fading and strong confidentiality, among which Differential Chaos Shift Keying (DCSK) is the most widely studied non-coherent digital modulation scheme. Generalized Carrier Index Differential Chaos Shift Key‐ ing (GCI-DCSK) is the integration of the index modulation technique on the basis of DCSK, which further improves the system per‐ formance. In this paper, the GCI-DCSK modulation scheme is combined with the relay collaboration technique to extend the cover‐ age of the communication network and improve the communication quality.