以单重合序列作为波长跳频序列,严格变重光正交码作为时间扩频序列,构造一种新的跳频/扩时二维变重光正交码.对所构造二维码的自相关和互相关性能进行了详细分析,得出互相关均值的表达式,并对该二维地址码的多址干扰误码率进行了仿真比较和理论分析.结果表明,确定严格变重光正交码的参数和单重合序列的长度,增加波长数会增加码字容量并降低系统的误码率;确定单重合序列的参数和严格变重光正交码的码重和码字个数,增加码长将降低系统的误码率.
参考文献
[1] | Sun Shurong,Yin Hongxi,Wang Ziyu,et al.A new family of 2D-optical orthogonal codes and analysis of its performance in optical CDMA access networks[J].Journal of Lightwave Technology,2006,24(4):1646-1653. |
[2] | Liang Wei,Yin Hongxi,Qin Liqiao,et al. A new family of 2D variable-weight optical orthogonal codes for OCDMA systems supporting multiple QoS and analysis of its performance[J].Photon.Netw.Commun.,2008,16:53-60. |
[3] | Yang G C.Variable-weight optical orthogonal codes for CDMA network with multiple performance requirements[J].IEEE Transactions on Communication,1996,44(1):47-55. |
[4] | Djordjevic I B,Vasic B.Design of multiweight unipolar codes for multimedia optical CDMA applications based on pairwise balanced designs[J].Jouranal of Lightwave Technology,2003,21(9):1850-1856. |
[5] | Nasaruddin,Tsujioka T.Design of strict variable-weight optical orthogonal codes for differentiated quality of service in optical CDMA networks[J].Computer Networks,2008,52:2077-2086. |
[6] | Li 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. |
[7] | Yang G C,Fuja T E.Optical orthogonal codes with unequal auto-and cross-correlation constraints[J].IEEE Transactions on Information Theory,1995,41(1):96-106. |
[8] | Chung F R K,Salehi J A,Wei V K.Optical orthogonal codes:Design,analysis,and applications[J].IEEE Transactions on Information Theory,1989,35(3):595-604. |
[9] | Kwong W C,et al.Design of multilength optical orthogonal codes for optical CDMA multimedia networks[J].IEEE Transactions on Communication,2002,50:1258-1265. |
[10] | Ji Jianhua,Tian Jingjin,Xu.Ming,et al.A new family of 2-D optical orthogonal codes based on prime code and one-coincidence sequence[J].Journal of Optoelectronics · Laser(光电子 ·激光), 2007,18(4):436-438 (in Chinese). |
[11] | Li Chuanqi,Chang Jianhua,Zhang Chengyi,et al.Acquirement and performance analysis of 2D-QPC signature code for OCDMA system[J].Chinese Journal of Quantum Electronics(量子电子学报), 2008,25(5):619-624 (in Chinese) . |
[12] | Li Chuanqi,Sun Xiaohan,Cai Jie,et al.Optitical code-cylinder based analysis of correlation and carnality of 2-D signature codes for OCDMA[J].Chinese Journal of Quantum Electronics(量子电子学报),2007,24(2):231-235 (in Chinese). |
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