Performance analysis of the DSSS communications receiver implementing a short time Fourier transform excision system.

In this paper, the short-time Fourier transform(STFT) is employed for nonstationary jammer excision in direct sequence spread spectrum(DS/SS) communication systems. The received signal is first analyzed by STFT. The localized interferers in the tf domain are then removed by binary excisions. Finally, the synthesized signal is correlated with the PN sequence and passed to the detector. The selection of both the data window and the distribution of the binary excision values in the t-f domain are key to effective removal of the jammer with a minimum distortion of the DS/SS communication signal. Proper data windows localize the interference in as few t-f bins as possible, whereas good binary excision assigns zero values to only those t-f bins contaminated by the jammer t-f signature. The closed form expression of the receiver SNR is derived as a function of the binary excision values in the t-f domain. The specific cases of impulsive and sinusoidal jammers are analyzed.

Main Author: Ouyang, Xuemei.
Other Authors: Amin, Moeness G.
Language: English
Published: 1998
Online Access: http://ezproxy.villanova.edu/login?url=https://digital.library.villanova.edu/Item/vudl:173558
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dc_source_str_mv Proceedings of the IEEE International Symposium on Time-Frequency and Time-Scale, Pittsburgh, PA, October 1998.
author Ouyang, Xuemei.
author_s Ouyang, Xuemei.
spellingShingle Ouyang, Xuemei.
Performance analysis of the DSSS communications receiver implementing a short time Fourier transform excision system.
author-letter Ouyang, Xuemei.
author_sort_str Ouyang, Xuemei.
author2 Amin, Moeness G.
author2Str Amin, Moeness G.
dc_title_str Performance analysis of the DSSS communications receiver implementing a short time Fourier transform excision system.
title Performance analysis of the DSSS communications receiver implementing a short time Fourier transform excision system.
title_short Performance analysis of the DSSS communications receiver implementing a short time Fourier transform excision system.
title_full Performance analysis of the DSSS communications receiver implementing a short time Fourier transform excision system.
title_fullStr Performance analysis of the DSSS communications receiver implementing a short time Fourier transform excision system.
title_full_unstemmed Performance analysis of the DSSS communications receiver implementing a short time Fourier transform excision system.
collection_title_sort_str performance analysis of the dsss communications receiver implementing a short time fourier transform excision system.
title_sort performance analysis of the dsss communications receiver implementing a short time fourier transform excision system.
description In this paper, the short-time Fourier transform(STFT) is employed for nonstationary jammer excision in direct sequence spread spectrum(DS/SS) communication systems. The received signal is first analyzed by STFT. The localized interferers in the tf domain are then removed by binary excisions. Finally, the synthesized signal is correlated with the PN sequence and passed to the detector. The selection of both the data window and the distribution of the binary excision values in the t-f domain are key to effective removal of the jammer with a minimum distortion of the DS/SS communication signal. Proper data windows localize the interference in as few t-f bins as possible, whereas good binary excision assigns zero values to only those t-f bins contaminated by the jammer t-f signature. The closed form expression of the receiver SNR is derived as a function of the binary excision values in the t-f domain. The specific cases of impulsive and sinusoidal jammers are analyzed.
publishDate 1998
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fgs.label Performance analysis of the DSSS communications receiver implementing a short time Fourier transform excision system.
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dc.title Performance analysis of the DSSS communications receiver implementing a short time Fourier transform excision system.
dc.creator Ouyang, Xuemei.
Amin, Moeness G.
dc.description In this paper, the short-time Fourier transform(STFT) is employed for nonstationary jammer excision in direct sequence spread spectrum(DS/SS) communication systems. The received signal is first analyzed by STFT. The localized interferers in the tf domain are then removed by binary excisions. Finally, the synthesized signal is correlated with the PN sequence and passed to the detector. The selection of both the data window and the distribution of the binary excision values in the t-f domain are key to effective removal of the jammer with a minimum distortion of the DS/SS communication signal. Proper data windows localize the interference in as few t-f bins as possible, whereas good binary excision assigns zero values to only those t-f bins contaminated by the jammer t-f signature. The closed form expression of the receiver SNR is derived as a function of the binary excision values in the t-f domain. The specific cases of impulsive and sinusoidal jammers are analyzed.
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