대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)

대한전기학회 (The Korean Institute of Electrical Engineers)
권호 표지

DS-CDMA 통신시스템 기반에서의 새로운 SNR 성능평가

The Advanced SNR Performance analysis for DS-CDMA Communication System

  • 정계현 (충북대학교 전기전자컴퓨터공학부) ;
  • 김성수 (충북대학교 전기전자컴퓨터공학부)
  • Jeong, Ke-Hon (School of Electrical and Computer Engineering, Chungbuk National University) ;
  • Kim, Sung-Soo (School of Electrical and Computer Engineering, Chungbuk National University)
  • 발행 : 2004.07.14
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초록

This paper proposes the new signal-to-noise ratio(SNR) that is different from the conventional signal-to-noise ratio (SNR) in direct-sequence code-division multiple-access communication system employing offset quadrature phase-shift keying(OQPSK) and using a chip waveform. The conventional SNR value is so different from a real SNR value. Therefore, we propose a new SNR equation approximated to real SNR. The multiple-access interference(MAI) in DS-CDMA communication system has an effect on SNR performance and MAI is concerned with the correlation functions of the chip waveform. For this reason, we considered all possible correlations of chip waveforms. In conclusion, the SNR value of proposed method is enclosed to the real SNR value.

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