摘要
时分多址接入(TDMA)技术是利用时间的正交性实现信道共享,网内各个站点按照时隙方式工作,不存在发生碰撞和相互竞争问题,具有很强的抗干扰能力。但在复杂电磁环境下,由于定频通信模式的限制,其抗干扰性能下降明显,针对这一问题,提出一种周期统计的TDMA动态频率选择(DFS)算法,给出了算法处理过程,并进行了理论分析及实验。结果表明,在复杂电磁环境下,算法可以增强TDMA网络的抗干扰能力,提高系统吞吐量。
The Time Division Multiple Access （TDMA）network uses time orthogonality to achieve channel sharing and various nodes of＂ network work in term of timeslot mode, so collision and competition do not exist. However, in the complex electromagnetic environment,the anti-jamming performance degradation of TMDA decreases obviously because of the limitation of fixed frequency communication mode.In view of this problem,a dynamic frequency selection algorithm based on cycle statistics in TDMA is put forward. The processing procedure of the algorithms is given, and the theoretical analysis and experiment are performed.The results show that the algorithm can enhance the anti-jamming capability of the TDMA network and improve the system throughput in the complex electromag- netic environment.
出处
《无线电通信技术》
2015年第5期50-52,63,共4页
Radio Communications Technology
基金
国家自然科学基金项目(61309008)
