Array processing for nonstationary interference suppression in DS/SS communications using subspace projection techniques

被引：47

作者：

Zhang, YM ^{[1
]}

Amin, MG ^{[1
]}

机构：

[1] Villanova Univ, Dept Elect & Comp Engn, Villanova, PA 19085 USA

来源：

IEEE TRANSACTIONS ON SIGNAL PROCESSING | 2001年 / 49卷 / 12期

关键词：

array processing; direct-sequence spread-spectrum communication; interference suppression; subspace projection; time-frequency distribution;

D O I：

10.1109/78.969509

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：

Combined spatial and time-frequency signatures of signal arrivals at a multisensor array are used for nonstationary interference suppression in direct-sequence spread-spectrum (DS/SS) communications. With random PN spreading code and deterministic nonstationary interferers, the use of antenna arrays offers increased DS/SS signal dimensionality relative to the interferers. Interference mitigation through a spatio-temporal subspace projection technique leads to reduced DS/SS signal distortion and improved performance over the case of a single antenna receiver. The angular separation between the interference and desired signals is shown to play a fundamental role in trading off the contribution of the spatial and time-frequency signatures to the interference mitigation process. The expressions of the receiver signal-to-interference-noise ratio (SINR) implementing subspace projections are derived, and numerical results are provided.

引用

页码：3005 / 3014

页数：10

共 33 条

[1] Optimum interference excision in spread spectrum communications using open-loop adaptive filters [J].

Amin, MG ;

Wang, CS ;

Lindsey, AR .

IEEE TRANSACTIONS ON SIGNAL PROCESSING, 1999, 47 (07) :1966-1976

[2] Interference mitigation in spread spectrum communication systems using time-frequency distributions [J].

Amin, MG .

IEEE TRANSACTIONS ON SIGNAL PROCESSING, 1997, 45 (01) :90-101

[3]

AMIN MG, 1998, P 32 ANN AS C SIGN S

[4]

AMIN MG, 1999, IEEE SIGNAL PROC MAR, V16

[5] Adaptive time-varying cancellation of wideband interferences in spread-spectrum communications based on time-frequency distributions [J].

Barbarossa, S ;

Scaglione, A .

IEEE TRANSACTIONS ON SIGNAL PROCESSING, 1999, 47 (04) :957-965

[6] Time-frequency MUSIC [J].

Belouchrani, A ;

Amin, MG .

IEEE SIGNAL PROCESSING LETTERS, 1999, 6 (05) :109-110

[7] A blind source separation technique using second-order statistics [J].

Belouchrani, A ;

AbedMeraim, K ;

Cardoso, JF ;

Moulines, E .

IEEE TRANSACTIONS ON SIGNAL PROCESSING, 1997, 45 (02) :434-444

[8]

Belouchrani A, 1998, IEEE T SIGNAL PROCES, V46, P2888, DOI 10.1109/78.726803

[9]

BOASHASH B, 1990, P IEEE, V80

[10]

Cohen L., 1995, TIME FREQUENCY ANAL

← 1 2 3 4 →