Wu Qing, Gong Fangping, Ji Jianhua. Effects of pulse shape on chip-asynchronous coherent time-spreading OCDMA[J]. 2009,(5):48-50. DOI: 10.13756/j.gtxyj.2009.05.020.
The effects of pulse shape on the chip-asynchronous coherent time-spreading OCDMA system performances are analyzed by the aperiodic cross-correlation function of up-sampled sequence.Under Gaussian waveform assumption
Multiple-Access Interference(MAI) and Beat Noise(BN) of OCDMA are quantitatively evaluated.For 127-chip Gold sequence
the mean BER performance of the system is derived.The results show that the narrower the optical pulse
the better aperiodic cross-correlation properties of the code words will be obtained
thus reducing MAI and BN and improving BER performance.
关键词
光通信光码分多址多址干扰差拍噪声非周期互相关函数
Keywords
optical communicationOCDMAMAIBNaperiodic cross-correlation function