The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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Detection technique for code acquisition in DS-SS systems employing PN matched filters

  • 유영환 (연세대학교 전자공학과) ;
  • 문태현 (경희대학교 전파공학과) ;
  • 주판유 (한국전자통신연구원 무선방송기술연구소) ;
  • 강창언 (경희대학교 전파공학과)
  • Published : 1998.07.01
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Abstract

This paper presents a threshold decision technique for direct sequence code acquistion employing Pseudo-Noise(PN) matched filter. The probabilities of detection and false alarm are derived as a measure of the system performance in both nonfading and nonselective Rician fading channels. For received PN codes with different SNR, the proposed acquisition scheme is able to detect a desired threshold in the search mode so that this value is utilized as a threshold for the verification mode. Thus, there is no need to determine a threshold by applying the Neyman-Person ciriteron. It is shown that this scheme achieves lower probability of false alarm than the acquisition scheme based on the Neyman-Person criterion, giving comparable performance in terms of the probability of detection.

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References

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