Performance analysis of chip-asynchronous coherent time-spreading optical CDMA system
Optoelectronics Letters(2009)
Abstract
Multiple-access interference(MAI) and beat noise(BN) in chip-asynchronous coherent time-spreading OCDMA system are evaluated by the aperiodic cross-correlation function of up-sampled sequence. Relationship between the mean intensity of aperiodic cross-correlation and MAI and BN is deduced, and then the relationship between BER and mean intensity of aperiodic cross-correlation is discussed. For 127-long gold sequence, mean BER performance of chip-asynchronous coherent time-spreading OCDMA is derived and compared with that of the chip-synchronous system. It can be shown that the chip-synchronous assumption provides a performance upper limit. For realistic asynchronous coherent time-spreading OCDMA system, BER will reduce by about one order of magnitude.
MoreTranslated text
Key words
Phase Noise,Receiver Noise,Lightwave Technology,IEEE Photonic Technology Letter,Gold Code
AI Read Science
Must-Reading Tree
Example
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
Generate MRT to find the research sequence of this paper
Chat Paper
Summary is being generated by the instructions you defined