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Performance enhancement of 2‐D optical CDMA systems using MCM signalling and heterodyne detection receiver
Author(s) -
Pham Anh T.,
Dang Ngoc T.
Publication year - 2012
Publication title -
transactions on emerging telecommunications technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.366
H-Index - 47
ISSN - 2161-3915
DOI - 10.1002/ett.2512
Subject(s) - heterodyne detection , heterodyne (poetry) , code division multiple access , pulse position modulation , modulation (music) , computer science , electronic engineering , pulse amplitude modulation , keying , code (set theory) , demodulation , amplitude shift keying , pulse (music) , telecommunications , optics , physics , phase shift keying , engineering , detector , channel (broadcasting) , bit error rate , acoustics , laser , set (abstract data type) , programming language
ABSTRACT We propose 2‐D optical code‐division multiple‐access systems using multi‐code modulation signalling and heterodyne detection receiver. The proposed system's performance is theoretically analysed and compared with conventional ones using on–off keying, pulse–amplitude modulation and pulse–position modulation. The numerical results show that the proposed system outperforms the conventional ones in terms of required transmitted power, the number of supportable users and spectral efficiency. Copyright © 2012 John Wiley & Sons, Ltd.