| BCH信道编码对快跳频光码分多址系统性能的改善 |
| |
| 引用本文： | 吉建华,范戈. BCH信道编码对快跳频光码分多址系统性能的改善[J]. 上海交通大学学报, 2003, 37(3): 359-361 |
| |
| 作者姓名： | 吉建华 范戈 |
| |
| 作者单位： | 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,上海,200030;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,上海,200030 |
| |
| 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）系统误骊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,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。
|
| 关 键 词： | 快跳频光码分多址 BCH码 单重合码 误码率 |
| 文章编号： | 1006-2467(2003)03-0359-03 |
| 修稿时间： | 2002-02-24 |
Performance Enhancement for FFH-OCDMA Systems by BCH Channel Coding |
| |
| JI Jian hua,FAN Ge. Performance Enhancement for FFH-OCDMA Systems by BCH Channel Coding[J]. Journal of Shanghai Jiaotong University, 2003, 37(3): 359-361 |
| |
| Authors: | JI Jian hua FAN Ge |
| |
| Abstract: | 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. |
| |
| Keywords: | fast frequency hopping optical code division multiple access(FFH OCDMA) BCH codes one coincidence sequence bit error rate (BER) |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
