OCDMA系统二维2D-OOSC方阵码的参数优化和性能分析
东南大学电子工程系, 南京 210096
下一篇 上一篇
摘要
给出了二维λ-t光正交方阵码2D-OOSC的设计方案, 重点讨论了2D-OOSC码字的相关性及码字参数对系统性能的影响。详细分析了2D-OOSC系统的用户容量以及由多用户干扰引起的误码性能。研究表明,在占用相同带宽的条件下,系统的用户容量远大于基于1D-OOC的WDM-CDMA混合系统,特别是在传输距离不太远的局域网中,光纤色散引起的传输损失较小。基于2D-OOSC地址码的 OCDMA系统有着现实的应用价值。
关键词
参考文献
[ 1 ] GhafouriShirazH , ShalabyHMH .Performanceanalysisofopticalspectral amplitude codingCDMAsystemsusingasuper fluorescentfibersource[J ].IEEEPhotonicsTechnologyLetters, 2001, 13 (8) :887~889
[ 2 ] ZhouX , ShalabyHM , LuC , etal.CodeforspectralamplitudecodingopticalCDMAsystems[J ].ElectronLett, 2000, 36 (6) :728~729
[ 3 ] HuangJF , HsuDZ .Fiber grating basedopticalCDMAspectralcodingwithnearlyorthogonalM sequencecodes[J ].IEEEPhotoTechLetters, 2000, 12 (9) :1252~1254
[ 4 ] DavidM .Code divisionmultipleaccesses:novelmultiplexingstrategyinopticalfibernetworks[A ].ICTON [C].2001.299~303
[ 5 ] ShaarAA , DaviesPA .Primesequences:quasi optimalsequencesfororchannelcodedivisionmull telexing[J].ElectronicsLetters, 1983, 9 (21) :888~889
[ 6 ] FathallagH , RuschLA , LarochelleS .PassiveopticalfastfreqnencyhopCDMAcommunicationsystem[J].JournalofLGiftwareTechnology, 1999, 13 (17) :397~405
[ 7 ] YangGC .Variable weightopticalorthogonalcodesforCDMAnetworkswithmultiple performancerequirements[J].IEEETransonComm, 1996, 44 (1) :47~51
[ 8 ] KwongWC , ZhangJG , YangGC .2n prime sequencecodeanditsopticalCDMAcodingarchitecture[J].ElectronicsLetters, 1994, 30 (6) :509~510
[ 9 ] PerrirPA , PrucnalPR .Wavelength divisionintegral tonofcode divisioninfiber opticsystem[J].IntJDiginalAnalogCabledSyst, 1988, 1:149~157
[10] Yang, GC , KwongC .PerformancecomparisonofmultiwavelengthCDMAandWDMA +CDMAforfiber opticnetworks[J].IEEETransonComm, 1997, 45 (11) :1426~1436
[11] Chung, FRK , SalehiJA , WeiVK .Opticalortho goalcodes:design, analysis, andapplication[J].IEEETransInformTheory, 1989, 35 (5) :595~604