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Titolo:
Adaptive group-blind multiuser detection based on a new subspace tracking algorithm
Autore:
Reynolds, D; Wang, XD;
Indirizzi:
Texas A&M Univ, Dept Elect Engn, College Stn, TX 77843 USA Texas A&M UnivCollege Stn TX USA 77843 t Engn, College Stn, TX 77843 USA
Titolo Testata:
IEEE TRANSACTIONS ON COMMUNICATIONS
fascicolo: 7, volume: 49, anno: 2001,
pagine: 1135 - 1141
SICI:
0090-6778(200107)49:7<1135:AGMDBO>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Keywords:
adaptive multiuser detection; code-division multiple access (CDMA) uplink; group-blind multiuser detection; subspace tracking;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
--discip_EC--
Citazioni:
15
Recensione:
Indirizzi per estratti:
Indirizzo: Reynolds, D Texas A&M Univ, Dept Elect Engn, College Stn, TX 77843 USA Texas A&M Univ College Stn TX USA 77843 ege Stn, TX 77843 USA
Citazione:
D. Reynolds e X.D. Wang, "Adaptive group-blind multiuser detection based on a new subspace tracking algorithm", IEEE COMMUN, 49(7), 2001, pp. 1135-1141

Abstract

Recently, Wang and Host-Madsen developed group-blind multiuser detectors for use in code-division multiple-access (CDMA) uplink environments in whichthe base station receiver has the knowledge of the spreading sequences of ail the users within the cell, but not that of the users from other cells. Yu and Host-Madsen later developed an adaptive version of this detector forsynchronous CDMA channels. In this letter, we develop a new low-complexity, high-performance subspace tracking algorithm and apply it to adaptive group-blind multiuser detection in asynchronous multipath CDMA channels. The detector can track changes in the number of users and their composite signature waveforms, We present steady-state performance as well as the ability of the receiver to track changes in the signal subspace, We also address theperformance gain of the group-blind detector over its blind counterpart for this application.

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Documento generato il 05/04/20 alle ore 22:47:48