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BCH信道编码对快跳频光码分多址系统性能的改善 被引量：5

Performance Enhancement for FFH-OCDMA Systems by BCH Channel Coding
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摘要 分析了单重合码的互相关性能 ,得出了未编码的快跳频光码分多址 ( FFH- OCDMA)系统误码率性能的具体表达式 .论述了 BCH信道编码对 FFH- OCDMA系统性能的影响 ,并将它和未编码的 FFH- OCDMA系统进行了比较 .结果表明 ,在相同的信息比特速率、切普间隔、有效波长数时 ,两个系统的误码率性能基本相当 ,但使用 BCH信道编码后 ,单重合码的长度将变短 ,这样不仅降低了光纤光栅的制作难度 ,且增加了单重合码的码字数 ,从而提高了系统容量 . The cross-correlation performance of one-coincidence sequence was analyzed, and the BER representation of fast frequency-hopping OCDMA networks was deduced. Then, the performance of BCH-coded FFH-OCDMA system was analyzed, and was compared with uncoded FFH-OCDMA system. It is shown that the two systems have comparable performance under the same bit rate, same chip interval and same number of available wavelengths. However, for BCH-coded FFH-OCDMA systems, the length of one-coincidence sequence will be shorter, which can not only reduce the difficulty of fabrication for fiber gratings, but also enhance the system throughout by larger cardinality of one-coincidence sequences.
作者 吉建华 范戈
机构地区 上海交通大学区域光纤通信网与新型光通信系统国家重点实验室
出处 《上海交通大学学报》 EI CAS CSCD 北大核心 2003年第3期359-361,共3页 Journal of Shanghai Jiaotong University
关键词 快跳频光码分多址 BCH码 单重合码 误码率 Bit error rate Frequency hopping Signal encoding
分类号 TN929.11 [电子电信—通信与信息系统] TN929.18 [电子电信—通信与信息系统]
  • 相关文献

参考文献6

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共引文献1

同被引文献26

  • 1ZHANG ChongFu QIU Kun XU Bo.Passive optical networks based on optical CDMA: Design and system analysis[J].Chinese Science Bulletin,2007,52(1):118-126. 被引量：5
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  • 3Claude B, Alain G. Near optimum error correcting coding and decoding: Turbo-codes[J]. IEEE Transaction on Communications, 1996,44(10) : 1261 - 1271.
  • 4Jin Y K, Poor H V. Turbo-coded optical direct-detection CDMA systems with PPM modulation[J]. Journal of Lightwave Technology, 2001,19(3) : 312-323.
  • 5Jin Y K, Poor H V. Turbo-coded packet transmission for an optical CDMA network[J]. Journal of Lightwave Technology, 2001,18(12):1905- 1916.
  • 6Ohtsuki T, Kahn J M. BER performance of Turbocoded PPM CDMA systems on optical fiber[J]. Journal of Lightwave Technology, 2001,18 ( 12 ) : 1776 -1784.
  • 7Fathallah H, Leslie A R, Sophie L. Passive optical fast frequency-hop CDMA communications system[J]. Journal of Lightwave Technology, 1999,17 (3) :397-405.
  • 8Li Bin. One-coincidence sequence with specified distance between adjacent symbols for frequency-hopping multiple access[J]. IEEE Transactions on Communications, 1997, 45(4):408-410.
  • 9Fathallah H, Rusch L A, Larochelle S. Passive optical fast frequency-hop CDMA communications system[J]. Journal of Lightwave Technology, 1999, 17(3) :397-405.
  • 10Fathallah. H, Rusch L A. Robust optical FFH-OCDMA communications : coding in place of frequency and temperature controls[J]. Journal of Lightwave Technolgoy, 1999, 17(8):1284--1293.

引证文献5

二级引证文献2

上海交通大学学报
2003年 第3期

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