Optimum interference excision in spread spectrum communications using open loop adaptive filters.

A generalized approach for interference suppression in PN spread-spectrum communications using open-loop adaptive excision filtering is introduced. The excision filter coefficients under this technique depend on the jammer power and its instantaneous frequency (IF) information, and both values can be gained in the time–frequency domain. The dependency of the excision filter characteristics on the interference power, which was absent in past contributions in this area, is of significant importance as it allows optimum tradeoff between interference removal and the amount of self-noise generated from the induced correlation across the PN chip sequence, due to filtering. This tradeoff is bounded by the two extreme cases of no selfnoise, which implies preprocessing disabled, and full interference excision, which the case previously considered. In this paper, we derive the FIR excision filters that maximize the receiver signal-to-noise ratio for narrowband interference and discuss the generalization to nonstationary jamming environment.

Main Author: Amin, Moeness G.
Other Authors: Wang, Chenshu., Lindsey, Alan R.
Language: English
Published: 1999
Online Access: http://ezproxy.villanova.edu/login?url=https://digital.library.villanova.edu/Item/vudl:173534
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dc_source_str_mv IEEE TRANSACTIONS ON SIGNAL PROCESSING, VOL. 47, NO. 7, JULY 1999
author Amin, Moeness G.
author_facet_str_mv Amin, Moeness G.
Wang, Chenshu.
Lindsey, Alan R.
author_or_contributor_facet_str_mv Amin, Moeness G.
Wang, Chenshu.
Lindsey, Alan R.
author_s Amin, Moeness G.
spellingShingle Amin, Moeness G.
Optimum interference excision in spread spectrum communications using open loop adaptive filters.
author-letter Amin, Moeness G.
author_sort_str Amin, Moeness G.
author2 Wang, Chenshu.
Lindsey, Alan R.
author2Str Wang, Chenshu.
Lindsey, Alan R.
dc_title_str Optimum interference excision in spread spectrum communications using open loop adaptive filters.
title Optimum interference excision in spread spectrum communications using open loop adaptive filters.
title_short Optimum interference excision in spread spectrum communications using open loop adaptive filters.
title_full Optimum interference excision in spread spectrum communications using open loop adaptive filters.
title_fullStr Optimum interference excision in spread spectrum communications using open loop adaptive filters.
title_full_unstemmed Optimum interference excision in spread spectrum communications using open loop adaptive filters.
collection_title_sort_str optimum interference excision in spread spectrum communications using open loop adaptive filters.
title_sort optimum interference excision in spread spectrum communications using open loop adaptive filters.
description A generalized approach for interference suppression in PN spread-spectrum communications using open-loop adaptive excision filtering is introduced. The excision filter coefficients under this technique depend on the jammer power and its instantaneous frequency (IF) information, and both values can be gained in the time–frequency domain. The dependency of the excision filter characteristics on the interference power, which was absent in past contributions in this area, is of significant importance as it allows optimum tradeoff between interference removal and the amount of self-noise generated from the induced correlation across the PN chip sequence, due to filtering. This tradeoff is bounded by the two extreme cases of no selfnoise, which implies preprocessing disabled, and full interference excision, which the case previously considered. In this paper, we derive the FIR excision filters that maximize the receiver signal-to-noise ratio for narrowband interference and discuss the generalization to nonstationary jamming environment.
publishDate 1999
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fgs.label Optimum interference excision in spread spectrum communications using open loop adaptive filters.
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dc.title Optimum interference excision in spread spectrum communications using open loop adaptive filters.
dc.creator Amin, Moeness G.
Wang, Chenshu.
Lindsey, Alan R.
dc.description A generalized approach for interference suppression in PN spread-spectrum communications using open-loop adaptive excision filtering is introduced. The excision filter coefficients under this technique depend on the jammer power and its instantaneous frequency (IF) information, and both values can be gained in the time–frequency domain. The dependency of the excision filter characteristics on the interference power, which was absent in past contributions in this area, is of significant importance as it allows optimum tradeoff between interference removal and the amount of self-noise generated from the induced correlation across the PN chip sequence, due to filtering. This tradeoff is bounded by the two extreme cases of no selfnoise, which implies preprocessing disabled, and full interference excision, which the case previously considered. In this paper, we derive the FIR excision filters that maximize the receiver signal-to-noise ratio for narrowband interference and discuss the generalization to nonstationary jamming environment.
dc.date 1999
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dc.source IEEE TRANSACTIONS ON SIGNAL PROCESSING, VOL. 47, NO. 7, JULY 1999
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