港口无线调度认知跳频通信系统部分频带干扰抑制性能分析

Performance analysis of partial-band jamming suppression in cognitive frequency hopping communication system for port wireless scheduling

针对港口无线调度中部分频带干扰严重危害常规跳频通信系统性能的问题,将认知无线电与跳频相结合,给出一种认知跳频通信系统模型.分析该系统在部分频带干扰条件下的性能,得到误码率闭合表达式,并通过仿真验证,将该通信系统与常规跳频通信系统的部分频带干扰抑制性能进行比较.理论分析和仿真结果表明,在理想同步情况下,认知跳频通信系统能够有效避开干扰频段,在较为"干净"的频谱空穴中动态调整跳变频率,较常规跳频通信系统具有更强的部分频带干扰抑制能力.

Considering that the partial-band jamming degrades the performance of the normal Frequency Hopping（ FH） communication system for port wireless scheduling,a Cognitive FH（ CFH） communication system model that combines cognitive radio with FH is proposed. The performance of the system under the partial-band jamming is analyzed and the closed-form expression of error rate is given. The performances of partial-band jamming suppression in CFH and normal FH communication systems are simulated and compared. The theoretic analysis and simulation results show that,under the condition of ideal synchronization,the CFH communication system can avoid the jamming spectrum effectively,and adjust the hopping frequency dynamically in a cleaner spectrum hole. Compared with the normal FH communication system,the CFH communication system is of better performance of jamming suppression.