Presentation	2001/3/23 Time-Domain Encoding Optical CDMA with Turbo Codes Tomoaki Ohtsuki,
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Abstract(in English)	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.
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Keyword(in English)	Time-Domain Encoding Optical CDMA / Turbo Codes / Pulse Position Modulation
Paper #	CAS2000-138,DSP2000-196,CS2000-158
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Conference Information
Committee	CS
Conference Date	2001/3/23(1days)
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Paper Information
Registration To	Communication Systems (CS)
Language	ENG
Title (in Japanese)	(See Japanese page)
Sub Title (in Japanese)	(See Japanese page)
Title (in English)	Time-Domain Encoding Optical CDMA with Turbo Codes
Sub Title (in English)
Keyword(1)	Time-Domain Encoding Optical CDMA
Keyword(2)	Turbo Codes
Keyword(3)	Pulse Position Modulation
1st Author's Name	Tomoaki Ohtsuki
1st Author's Affiliation	Dept. of Electrical Engineering, Science University of Tokyo()
Date	2001/3/23
Paper #	CAS2000-138,DSP2000-196,CS2000-158
Volume (vol)	vol.100
Number (no)	722
Page	pp.pp.-
#Pages	6
Date of Issue