Turbo-coded optical PPM CDMA systems

Tomoaki Ohtsuki, Joseph M. Kahn

Research output: Contribution to conferencePaperpeer-review

3 Citations (Scopus)


We obtain upper bounds on the bit-error rate (BER) for turbo-coded optical code-division multiple-access (CDMA) systems using pulse position modulation (PPM.) We use transfer function bounding techniques to obtain these bounds, so our results correspond to the average bound over all interleavers of a given length. We consider parallel concatenated coding (PCC) schemes that use recursive convolutional codes as constituent codes. We consider systems using an avalanche photodiode (APD), and treat APD noise, thermal noise, and multi-user interference using a Gaussian approximation. We compare the performance of turbo-coded systems with that of BCH-coded systems with soft-decision decoding. We show that turbo-coded systems have better performance than BCH-coded systems.

Original languageEnglish
Number of pages5
Publication statusPublished - 2000 Dec 3
Externally publishedYes
Event2000 IEEE International Conference on Communications - New Orleans, LA, USA
Duration: 2000 Jun 182000 Jun 22


Other2000 IEEE International Conference on Communications
CityNew Orleans, LA, USA

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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