A new receiver structure for asynchronous CDMA: STAR - The spatio-temporal array-receiver

被引：47

作者：

Affes, S ^{[1
]}

Mermelstein, P ^{[1
]}

机构：

[1] INRS Telecommun, Verdun, PQ H3E 1H6, Canada

来源：

IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS | 1998年 / 16卷 / 08期

关键词：

array signal processing; blind identification; eigensubspace tracking; equalization and beamforming; localization and tracking; source separation; space-time processing; time-delay synchronization and tracking;

D O I：

10.1109/49.730450

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We propose a spatio-temporal array-receiver (STAR) for asynchronous code division multiple access (CDMA), using a new space/time structural approach. First, STAR performs blind identification and equalization of the propagation channel from each mobile transmitter. Second, it provides fast and accurate estimates of the number, relative magnitude, and delay of the multipath components. From this space/time separation, STAR reconstructs the identified channel with respect to a partially revealed space/time structure and reduces identification errors by the order of the ratio of the processing gain and the number of paths. Therefore, STAR offers a high potential for increasing capacity, with relatively low computational complexity. Simulations confirm the good multipath acquisition and tracking properties of STAR in the presence of strong interference and fast Doppler.

引用

页码：1411 / 1422

页数：12

共 32 条

[1] A subarray manifold revealing projection for partially blind identification and beamforming [J].

Affes, S ;

Gazor, S ;

Grenier, Y .

IEEE SIGNAL PROCESSING LETTERS, 1996, 3 (06) :187-189

[2] An algorithm for multisource beamforming and multitarget tracking [J].

Affes, S ;

Gazor, S ;

Grenier, V .

IEEE TRANSACTIONS ON SIGNAL PROCESSING, 1996, 44 (06) :1512-1522

[3]

AFFES S, 1996, P EURASIP EUSIPCO 96, V1, P543

[4]

AFFES S, 1997, P IEEE SPAWC WORKSH, P233

[5]

AFFES S, 1997, P ICUPC 97, V2, P510

[6]

AFFES S, 1997, P ICC 97, V3, P1340

[7]

BARABELL AJ, 1983, P ICASSP 83, V1, P336

[8] OPTIMALITY OF HIGH-RESOLUTION ARRAY-PROCESSING USING THE EIGENSYSTEM APPROACH [J].

BIENVENU, G ;

KOPP, L .

IEEE TRANSACTIONS ON ACOUSTICS SPEECH AND SIGNAL PROCESSING, 1983, 31 (05) :1235-1248

[9] EXACT MAXIMUM-LIKELIHOOD PARAMETER-ESTIMATION OF SUPERIMPOSED EXPONENTIAL SIGNALS IN NOISE [J].

BRESLER, Y ;

MACOVSKI, A .

IEEE TRANSACTIONS ON ACOUSTICS SPEECH AND SIGNAL PROCESSING, 1986, 34 (05) :1081-1089

[10]

DUMONT L, 1994, IEE ELECT LETT, V30, P1583

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