一种用于自适应跳频系统的新型交织方法

A new interleaving method in the adaptive frequency hopping system

摘要:

提出了一种用于自适应跳频系统的新型交织方法,本方法采用素数码来控制自适应跳频系统中交织部分的信息符号变换规律,具有交织相关系数小、延时低、存储容量需求小、且实现灵活不用刻意考虑矩阵维数的特点,达到了较优的交织性能度量．Monte Carlo仿真结果表明,在某自适应跳频通信系统仿真平台中,本交织方法与常见的行列交织、伪随机交织方法相比,在满足特定误码率前提下,能够改善系统出现连串错误时超出纠错编码纠错能力的抗误码性能,具有实现简单、低延时及计算量小的优势,使得自适应跳频通信系统在抗干扰方面有了更好的抑制效果,其抑制干扰的效果与平方素数码相当,好于行列交织方法,仅略低于伪随机交织方法．

Abstract:

A new interleaving method for adaptive frequency hopping system is proposed, which uses the prime code to control information sequence’s order at the transmitter and change the order back at the receiver. The new interleaving method possesses the features of low correlation coefficient, low interleaving latency, small storage capacity and flexible matrix realization, which reaches the relative optimal performance metrics of interleaving. Monte Carlo simulations show that in an adaptive frequency hopping communication system simulation platform the new interleaving method can improve the performance of anti-consecutive errors beyond the error correction capability of channel coding and has the advantages of easy implementation, low interleaving delay and small calculation amount compared with the block interleaving and pseudo-random interleaving on the premise of meeting the specific error rate performance. Moreover, our new interleaving method has a better anti-jamming performance in the adaptive frequency hopping system. The anti-jamming performance of our interleaving method is better than block interleaving and is a bit worse than pseudo-random interleaving method.