传输斜移对同步并行光传输系统性能的影响

Influence of time skew on the performance of synchronous parallel optical systems

针对一个具体的链路模型，通过计算机仿真分析了传输斜移对同步并行光传输系统性能的影响。光纤中的信号分析在频域中通过快速傅立叶变换（fast fourier transform，FFT）进行。分别计算了单信道误码率以及没有传输斜移和有传输斜移时并行信道总的误码率。计算结果表明，在噪声不是影响系统性能的主要因素时，传输斜移是决定并行光传输系统最大同步传输速率和传输距离的一个重要因素。

Based on a specific link model, a computer simulation was performed to research the influence of time skew on the performance of synchronous parallel fiber optical systems. The signal analysis in multimode fiber was made through the fast Fourier transform （FFT） algorithm in the frequency domain. The bit error rate （BER） of each single channel and the overall BER of the bus were computed respectively. The results indicated that while noise is not an important influence factor for the performance of the system, time skew is the main factor determining the maximum rate and link length of the synchronous parallel data transmission.