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Optical CDMA Using Dual Encoding with Optical Power

Authors:
Shusaku Hata
Hiroyuki Yashima

Keywords: optical code division multiple access; power control;optical orthogonal codes

Abstract:
In this paper, we propose optical code division multiple access (CDMA) systems using dual encoding with different optical power to improve system performance. In the proposed system, each user has two signature sequences, and an information bit is modulated by the sequences with the different power. In the receiver, the received signal is fed into optical hard limiter (OHL). The reflected signal and the transmitted signal of OHL are decoded by corresponding decoders of the sequences, respectively. At each decoder, correlation between received sequence and an assigned sequence is calculated and then information bit is detected. We theoretically derive bit error rate (BER), and show that our proposed system can significantly improve BER.

Pages: 68 to 72

Copyright: Copyright (c) IARIA, 2011

Publication date: November 20, 2011

Published in: conference

ISSN: 2326-9383

ISBN: 978-1-61208-174-8

Location: Lisbon, Portugal

Dates: from November 20, 2011 to November 25, 2011