Noncoherent Spatial/Spectral Optical CDMA System With Two-Dimensional Perfect Difference Codes
學年 94
學期 1
出版（發表）日期 2005-12-01
作品名稱 Noncoherent Spatial/Spectral Optical CDMA System With Two-Dimensional Perfect Difference Codes
作品名稱（其他語言）
著者 Lin, Cheing-hong; Wu, Jingshown; Yang, Chun-liang
單位 淡江大學電機工程學系
出版者 Piscataway: Institute of Electrical and Electronics Engineers(IEEE)
著錄名稱、卷期、頁數 Journal of Lightwave Technology 23(12), pp.3966-3980
摘要 A dynamic optical code division multiple access (DOCDMA) communication system is proposed for high-bandwidth communication systems. An implementation of the system is proposed based on a fast tunable optical filter (TOF) in each encoder and decoder. This technique actively modulates the central wavelength of a TOF according to a functional code at the transmitter during the bit period before the transmission of the data. The system is modeled and analyzed taking into account multiple access interference (MAI), thermal noise, and phase-induced intensity noise (PIIN). The performance of this system is compared to that of a spectral amplitude coding system that uses either a Hadamard code or a modified quadratic congruence (MQC) code. The results show that the proposed DOCDMA system reduces the PIIN effect on the performance of the system and improves the bit error rate (BER) performance at a large number of users. Furthermore, it is found that when the effective power is large enough, the MAI becomes the main factor that limits system performance, whereas when the effective power is relatively low, both thermal noise and PIIN become the main limiting factors with thermal noise having the main influence.
關鍵字
語言 en_US
ISSN 0733-8724 1558-2213
期刊性質 國外
收錄於 SCI EI
產學合作
通訊作者
審稿制度 否
國別 USA
公開徵稿
出版型式 ,電子版,紙本
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