TY - GEN
T1 - Phase drift effects in optical CDMA
AU - Rusch, Leslie A.
AU - Poor, H. Vincent
N1 - Publisher Copyright:
© 1994 IEEE.
PY - 1994
Y1 - 1994
N2 - Fiber optic communication systems using CDMA have been proposed. While coherent detection is a reasonable assumption in many RF systems, semiconductor lasers for fiber applications have been shown to suffer from more serious phase variation that precludes fully coherent detection, the focus of previous CDMA research. The authors examine the effect of phase drift on several multiuser detectors for BPSK, as well as two detectors for BFSK. They show that when the desired user's phase can be tracked, BPSK match filtering offers better bit error rates than BFSK, and the authors derive closed form solutions for the error probabilities in the limit of infinitely long spreading codes modeled as a random sequence of plus and minus ones. When there is no phase tracking, they show that the probability of error of the multiuser detectors approaches one half.
AB - Fiber optic communication systems using CDMA have been proposed. While coherent detection is a reasonable assumption in many RF systems, semiconductor lasers for fiber applications have been shown to suffer from more serious phase variation that precludes fully coherent detection, the focus of previous CDMA research. The authors examine the effect of phase drift on several multiuser detectors for BPSK, as well as two detectors for BFSK. They show that when the desired user's phase can be tracked, BPSK match filtering offers better bit error rates than BFSK, and the authors derive closed form solutions for the error probabilities in the limit of infinitely long spreading codes modeled as a random sequence of plus and minus ones. When there is no phase tracking, they show that the probability of error of the multiuser detectors approaches one half.
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U2 - 10.1109/CTMC.1994.512597
DO - 10.1109/CTMC.1994.512597
M3 - Conference contribution
AN - SCOPUS:85057432987
T3 - 1994 IEEE GLOBECOM - Communications: Communications Theory Mini-Conference Record
SP - 159
EP - 165
BT - 1994 IEEE GLOBECOM - Communications
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 3rd Communications Theory Mini-Conference, CTMC 1994, held in conjunction with IEEE GLOBECOM 1994
Y2 - 27 November 1994 through 1 December 1994
ER -