Analysis result shows that this scheme can improve the BER performance, and thus enhance the system capacity of FFH OCDMA.

结果表明。该方案能有效地改善FFH OCDMA系统误码率的性能，可增加系统的容量。

youdao

Meanwhile, synchronization is also the difficulty of the development of FH system, which needs supplicated design especially in the fast frequency hopping (FFH).

同时跳频同步也是跳频通信系统开发的难点，特别在高跳速工作时实现同步捕获和跟踪需要精心设计方案。

youdao

The results of simulation show that dispersion seriously reduces the peak power and sample energy on the FFH OCDMA system. Hence, bit error rate(BER) of system is increased by dispersion.

结果表明，在FFH- OCDMA系统中，光纤色散导致解码自相关光脉冲峰值功率和光脉冲取样能量的降低，进而导致系统误码率（BER ）的增加。

youdao