Blind Detection Method of Anti-MAI Based on Wiener Filter

Chen, Wanpei; Shao, Ning; Chen, Junsheng; Hu, Xuelong

doi:10.1109/icece.2010.833

Cited by 1 publication

(1 citation statement)

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“…In the proposed system, interleaving patterns based on received signal to interference plus noise ratio are first pre-stored at transmitter and receiver, and the system then requires the cooperation between the transmitter and the receiver on a low rate feedback channel to send the index of the interleaver to be used. A separate method based on auxiliary vector filter is studied in paper [5]. The auxiliary vector filter based on the Wiener filter is used for anti-multiple access interference results.…”

Section: Introductionmentioning

confidence: 99%

Time Delay Tracking for Multiuser Synchronization in CDMA Networks

Ali¹,

Memon²

2013

JNW

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Multipath propagation, multiple access interference and non-line of sight propagation, etc. have impeded the accuracy in mobile data measurements. Multiuser receivers in asynchronous Code Division Multiple Access (CDMA) systems require the knowledge of several parameters such as timing delay between users. In this paper, the problem of time delay estimation for CDMA systems is examined by proposing an approach based on blind nonlinear least mean squares (LMS) based early-late delay tracker. A system model is developed and a delay tracking algorithm is presented. The simulation results of the proposed delay tracker are compared with the classical delay-locked loop (DLL) approach in a multipath scenario and these show that the proposed delay tracker provides very good performance in challenging cases of closely spaced multipath delays

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Section: Introductionmentioning

confidence: 99%