摘要
为了改善混沌信号的传输性能,在相关延迟移位键控(CDSK)方案和多载波相关延迟移位键控(MC-CDSK)方案的基础上,提出一种多用户正交相关延迟移位键控(MU-OCDSK)方案。该方案利用多载波对混沌信号进行调制,得到的结果相对于CDSK,不仅有更高的频谱效率,而且误码率也得到了一定的改善。对该方案进行了理论仿真和蒙特卡洛仿真,结果表明相对于MC-CDSK,该方案不仅提高了1倍的传输速率,而且改善了误码率;且理论仿真和蒙特卡罗仿真结果一致。
In order to improve the transmission performance of chaotic signals, a Multi-User Orthogonal Correlation Delay Shift Keying(MU-OCDSK) scheme was proposed based on Correlation Delay Shift Keying(CDSK) scheme and Multi-Carrier Correlation Delay Shift Keying(MC-CDSK) scheme. The multi-carrier was used to modulate chaotic signals. Compared with CDSK, the proposed scheme not only has higher spectral efficiency, but also improves bit error rate. Theoretical simulation and Monte Carlo simulation show that compared with MC-CDSK, the proposed scheme not only doubles the transmission rate, but also improves the bit error rate. The results of theoretical simulation and Monte Carlo simulation are consistent.
引文
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