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首页> 外文期刊>IEEE Journal on Selected Areas in Communications >A theoretical analysis of the performance of code division multiple access communications over multimode optical fiber channels-part I: transmission and detection
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A theoretical analysis of the performance of code division multiple access communications over multimode optical fiber channels-part I: transmission and detection

机译：多模光纤信道上码分多址通信性能的理论分析-第一部分：传输与检测

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摘要

This paper presents results of a theoretical investigation to evaluate the performance of code division multiple access communications over multimode optical fiber channels in an asynchronous, multiuser communication network environment. The system is evaluated using Gold sequences for spectral spreading of the baseband signal from each user employing direct-sequence biphase shift keying and intensity modulation techniques. The transmission channel model employed is a lossless linear system approximation of the field transfer function for the /spl alpha/-profile multimode optical fiber. Due to channel model complexity, a correlation receiver model employing a suboptimal receive filter was used in calculating the peak output signal at the ith receiver. The performance measures for the system, i.e., signal-to-noise ratio and bit error probability for the ith receiver, are derived as functions of channel characteristics, spectral spreading, number of active users, and the hit energy to noise (white) spectral density ratio.
机译：本文提出了理论研究的结果，以评估异步，多用户通信网络环境中多模光纤信道上的码分多址通信的性能。使用Gold序列对系统进行评估，以使用直接序列双相移键控和强度调制技术对每个用户的基带信号进行频谱扩展。所采用的传输通道模型是/ spl alpha /轮廓多模光纤的场传递函数的无损线性系统近似。由于信道模型的复杂性，在计算第i个接收器的峰值输出信号时，采用了次优接收滤波器的相关接收器模型。该系统的性能指标，即第i个接收机的信噪比和误码率，是根据信道特性，频谱扩展，活跃用户数量以及命中的能量噪声（白色）频谱的函数得出的密度比。

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