【摘要】 分析了差拍噪声对快跳频光码分多址(FFH-OCDMA)系统性能的影响以及FFH-OCD-MA系统中的色散效应,并将色散效应等效为功率衰减因子,得出同时考虑差拍噪声和色散后FFH-OCDMA系统的误码率性能.结果表明,差拍噪声和色散效应严重恶化了FFH-OCDMA系统的误码率性能.指出了FFH-OCDMA系统地址码的设计原则.更多还原

【Abstract】 The impact of optical beat interference on the performances of optical fast frequency hopping CDMA networks was analyzed. The effect of chromatic dispersion was also analyzed, and it is equivalent to an energy attenuation factor. Then, the BER performance of FFHOCDMA was educed after considering the effect of optical beat interference and chromatic dispersion. The analysis results show that the BER performance of FFHOCDMA is seriously affected by optical beat interference and chromatic dispersion. At last, the rule of code design for FFHOCDMA system was presented.更多还原