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RLS and LMS blind adaptive multi-user detection method and comparison in acoustic communication

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文献出处
Instrumentation  2015年02期
机 构
Shandong,Provincial,Key,Laboratory,of,Ocean,Environment,Monitoring,Technology,Institute,of,Oceanographic,Instrumentation,Shandong,Academy,of,Science
基 金
financially,supported,by,Key,Technologies,R&D,Program,of,Shandong,Province(2015GSF115018),Natural,Science,Foundation,of,Shandong,Province(ZR2013FL027,ZR2013DM,014),Youth,Foundation,of,Shandong,Academy,of,Science(2013QN030)
论文摘要

RLS and LMS blind adaptive multi-user detection algorithm and multi-user detector was proposed to solve the problem of multi-user signal detection problem encountered in underwater acoustic communication networks.In simulation analysis,RLS and the LMS blind adaptive multi-user detector were designed and tested for synchronous and asynchronous multi-user communication process.The results of SIR comparison and MMSE comparison show that,both of the two methods can realize blind adaptive detection when any user change in multi-user communication,during this process,the training communication sequences are not needed.The RLS algorithm has about 5 dB higher in SIR compared with LMS algorithm,and the convergence velocity of RLS algorithm is also higher than LMS algorithm when the communication users change.RLS algorithm has better ability in multi-user detection than that of LMS algorithm,and it has great attraction and guiding significance for solving the problem of multiple access interference(MAI) in multi-user communication.

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