提出基于差值符号同步的优化算法,该算法适用于强度调制直接检测(IMDD)的OOFDM—PON系统。在仅利用数据符号位(Ibit)进行同步运算的条件下,通过引入取反序列,显著提升了Ibit同步精度,同时在节省资源消耗方面得到大幅改善。通过仿真和实验验证了该优化算法与优化前拥有相同的同步性能。
The paper proposes an optimized algorithm based on D-value synchronization which is fit for inten- sity modulation and direct detection(IMDD) OOFDM-PON system. In the condition that only the data symbol bit(lbit) is used for calculation, a reversed sequence is introduced which can apparently increase the synchro- nization performance and save the resource as well. The simulation and experiment show that the optimized one bit width symbol timing synchronization have the same t)erformance as before.