Turbo-coded packet transmission for an optical CDMA network
Turbo-coded packet transmission for an optical CDMA network
复制标题
用于光 CDMA 网络的 Turbo 编码分组传输
DOI：
10.1109/50.908781
复制
发表时间：
2000
影响因子：
4.7
通讯作者：
H. Poor
中科院分区：
文献类型：
--
作者：
J. Kim;H. Poor
对采用Turbo编码的光码分多址(CDMA)网络的性能进行了分析和仿真。考虑了一种采用二进制脉冲位置调制的强度调制和直接检测光学系统。根据依赖于Turbo编码误比特率(BER)性能的吞吐量-延迟特性来评估网络的性能。为了消除延迟捕获效应，采用了到达时间随机化。仿真结果表明，在码率不变的情况下，通过增加交织器长度和译码迭代次数，可以显著改善这种光码分多址网络的性能。此外，对于给定的误码率要求，证实了Turbo编码在增加光码分多址网络可以支持的同时用户数方面非常有效。
The performance of an optical code-division multiple-access (CDMA) network with turbo coding is analyzed and simulated. An intensity-modulated and direct-detected optical system employing binary-pulse-position-modulation is considered. The performance of the network is evaluated in terms of throughput-delay characteristics that depend on the turbo coded bit error rate (BER) performance. To eliminate delay capture effects, time-of-arrival randomization is employed. Simulation results demonstrate that the performance of such an optical CDMA network can be substantially improved by increasing the interleaver length and the number of iterations in the decoding process for a fixed code rate. Also, it is confirmed that turbo coding is very effective in increasing the number of simultaneous users that can be supported by an optical CDMA network for a given BER requirement.