基于变抽头长度的水声通信多用户检测器

Multiuser detector for underwater acoustic communication based on variable tap-length

针对水声信道环境特点,提出一种基于变抽头长度的水声通信多用户检测方法。该方法采用交织多址技术,用不同的交织器区分用户,并通过长度更新算法调整抽头长度。仿真结果表明基于变抽头长度的多用户检测器能够自适应地收敛到最优抽头长度,从而获得系统性能的改善。

Considering the characteristics of underwater acoustic channel,a variable tap-length multiuser detection scheme for underwater acoustic communication is proposed. The proposed scheme adopts interleave-division multiple access employing distinct interleavers to separate users. Meanwhile, it dynamically adjusts tap-length by employing length update algorithm. The simulation results demonstrate that the scheme can adaptively converge to the optimum tap-length, thus achieving performance improvement as compared to the traditional fixed tap-length multiuser detector.