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Performance of Infrared OPPM-CDMA Systems Using Optical Orthogonal Codes (n,ω,λa,λc) |
Jin Liang-nian; Wang Ying-sheng; Zou Chuan-yun |
Dept. of Commun. and Info. Eng., Guilin Inst. of Electron. Tech.,Guilin 541004 China |
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Abstract The effect of the multiple-user interference, the receiver shot noise, ambient light interference, the receiver dark current and the thermal noise are taken into account. A probability union bound and the pessimistic estimation method are used that decision errors may occur on condition that two decision measurements are equal. The upper bounds of the bit error (BER) of infrared Overlapping Pulse-Position Modulation (OPPM)/Code Division Multiple Access (CDMA) correlation receiver without optical hard-limiters, with single optical hard-limiters and with double optical hard-limiters for arbitrary AQ and Ac are derived. Moreover, the performance analysis and comparisons for aforementioned three receivers are presented by computer simulation.
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Received: 23 February 2003
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