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Titolo:
Array processing for nonstationary interference suppression in DS/SS communications using subspace projection techniques
Autore:
Zhang, YM; Amin, MG;
Indirizzi:
Villanova Univ, Dept Elect & Comp Engn, Villanova, PA 19085 USA Villanova Univ Villanova PA USA 19085 Comp Engn, Villanova, PA 19085 USA
Titolo Testata:
IEEE TRANSACTIONS ON SIGNAL PROCESSING
fascicolo: 12, volume: 49, anno: 2001,
pagine: 3005 - 3014
SICI:
1053-587X(200112)49:12<3005:APFNIS>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
SPREAD-SPECTRUM COMMUNICATIONS; TIME-FREQUENCY DISTRIBUTIONS; FILTERS; REJECTION; TRANSFORM; EXCISION; SYSTEMS;
Keywords:
array processing; direct-sequence spread-spectrum communication; interference suppression; subspace projection; time-frequency distribution;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
--discip_EC--
Citazioni:
33
Recensione:
Indirizzi per estratti:
Indirizzo: Zhang, YM Villanova Univ, Dept Elect & Comp Engn, Villanova, PA 19085 USA Villanova Univ Villanova PA USA 19085 , Villanova, PA 19085 USA
Citazione:
Y.M. Zhang e M.G. Amin, "Array processing for nonstationary interference suppression in DS/SS communications using subspace projection techniques", IEEE SIGNAL, 49(12), 2001, pp. 3005-3014

Abstract

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 spreadingcode 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 theinterference 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.

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Documento generato il 04/04/20 alle ore 11:31:53