Optical synchronous PPM/CDMA systems using co-channel interference cancellation

Yoshinobu Gamachi, Tomoaki Ohtsuki, Hideyuki Uehara, Iwao Sasase

Research output: Contribution to conferencePaper

2 Citations (Scopus)

Abstract

The performance of direct-detection optical synchronous code-division multiple-access (CDMA) systems with pulse position modulation (PPM) signaling (PPM/CDMA) using modified prime sequence codes as signature sequence codes with co-channel interference canceller is analyzed under the assumption of number-state light field where the background noise is negligible. Modified prime sequence codes that exhibit a grouping characteristic are employed for optical synchronous CDMA systems. The upper bound on the bit error probability of optical synchronous PPM/CDMA systems with co-channel interference canceller is derived, and the bit error probability of optical synchronous PPM/CDMA systems are evaluated. We compare the optical synchronous PPM/CDMA systems with co-channel interference canceller to that of the optical synchronous PPM/CDMA systems without co-channel interference canceller and to those of optical synchronous OOK/CDMA systems with and without co-channel interference canceller. We show that optical synchronous PPM/CDMA systems with co-channel interference canceller have better bit error probability performance than other optical synchronous CDMA systems.

Original languageEnglish
Pages2161-2165
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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    Gamachi, Y., Ohtsuki, T., Uehara, H., & Sasase, I. (1995). Optical synchronous PPM/CDMA systems using co-channel interference cancellation. 2161-2165. Paper presented at Proceedings of the 1995 IEEE Global Telecommunications Conference. Part 2 (of 3), Singapore, Singapore, .