Journal of the Institute of Electronics Engineers of Korea SD (대한전자공학회논문지SD)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Modified Hadamard Codes for Spectral-Amplitude-Coding Optical CDMA

Spectral-Amplitude-Coding Optical CDMA를 위한 Modified Hadamard Code

  • Jhee, Yoon-Kyoo (Dept. of Electronics Engineering, Ewha Womans University)
  • 지윤규 (이화여자대학교 전자공학과)
  • Received : 2011.02.24
  • Accepted : 2011.07.10
  • Published : 2011.08.25
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Abstract

Spectral-amplitude-coding optical CDMA systems using codes based upon Hadamard matrices have very restrictive code lengths of $2^n$ and high phase-induced intensity noise(PIIN). In this paper a new code family, namely modified Hadamard code, is proposed to relax the code length restriction and the number of simultaneous users. The improved performance of the proposed system is analysed with the consideration of noise.

Hadamard code를 이용한 spectral-amplitude-coding optical code-division multiple-access(OCDMA) 시스템은 $2^n$개의 code length만을 갖는 특성을 지니어 최대 사용자 수의 조절이 어렵고 phase-induced intensity noise(PIIN)가 커서 효율적인 시스템 구성이 어렵다. 이의 한계성을 극복할 수 있는 modified Hadamard codes를 제안하고 잡음 분석을 통하여 향상된 시스템 특성을 보인다.

Keywords

References

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