Direct-detection optical synchronous CDMA systems with double optical hard-limiters using modified prime sequence codes

Tomoaki Ohtsuki, Kazumi Sato, Iwao Sasase, Shinsaku Mori

Research output: Contribution to conferencePaper

10 Citations (Scopus)

Abstract

An optical code-division multiple-access (CDMA) system with double optical hard-limiters is proposed where the optical hard-limiters are placed before and after an optical correlator. Moreover, the effect of the optical hard-limiter on the performance of the optical synchronous CDMA systems using modified prime sequence codes is analyzed under the assumption of Poisson shot noise model for the receiver photodetector where the noise due to the detector dark currents exists. We evaluate the performance under average power and bit rate constraints. Our results show that using the single optical hard-limiter slightly degrades the performance of the optical CDMA systems. Moreover, we show that the optical CDMA systems with double optical hard-limiters have better performance than other conventional CDMA systems without and with the optical hard-limiter when the number of simultaneous users is not so large.

Original languageEnglish
Pages2156-2160
Number of pages5
Publication statusPublished - 1995 Dec 1
EventProceedings of the 1995 IEEE Global Telecommunications Conference. Part 2 (of 3) - Singapore, Singapore
Duration: 1995 Nov 141995 Nov 16

Other

OtherProceedings of the 1995 IEEE Global Telecommunications Conference. Part 2 (of 3)
CitySingapore, Singapore
Period95/11/1495/11/16

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Global and Planetary Change

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    Ohtsuki, T., Sato, K., Sasase, I., & Mori, S. (1995). Direct-detection optical synchronous CDMA systems with double optical hard-limiters using modified prime sequence codes. 2156-2160. Paper presented at Proceedings of the 1995 IEEE Global Telecommunications Conference. Part 2 (of 3), Singapore, Singapore, .