Novel narrowband interference rejection for asynchronous spread spectrum wireless modem using a saw convolver

H. Nakase, K. Tsubouchi

研究成果: Paper査読

2 被引用数 (Scopus)

抄録

An asynchronous spread spectrum (SS) wireless modem has been implemented using an efficient Zn0-Si02-Si surface acoustic wave (SAW) convolver. The modem is based on a direct-sequence I frequency-shift-keying (DS/FSK) method for the modulation. The demodulation is carried out asynchronously utilizing the coherent correlation characteristics of the SAW convolver. In order to improve the narrowband interference rejection capability, we propose a new technique based on the reference signal control. A notched-reference-signal circuit and a selfconvolution canceler are implemented in the SS modem for the reference signal control. It is found that the antijam capability for narrowband interference is at least -24dB of desired-toundesired power ratio (DIU); the improvement of the antijam capability is 16dB up as compared with our previous SS modem.

本文言語English
ページ267-270
ページ数4
DOI
出版ステータスPublished - 1992 1 1
イベント2nd IEEE International Symposium on Spread Spectrum Techniques and Applications, ISSTA 1992 - Yokohama, Japan
継続期間: 1992 11 291992 12 2

Conference

Conference2nd IEEE International Symposium on Spread Spectrum Techniques and Applications, ISSTA 1992
国/地域Japan
CityYokohama
Period92/11/2992/12/2

ASJC Scopus subject areas

  • コンピュータ ネットワークおよび通信
  • 信号処理

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