多用户光OFDM系统自适应子载波与比特分配算法

Multi-user Optical OFDM System with Adaptive Subcarrier and Bit Allocation Algorithm

光OFDM能够方便地应用于现有基于PON的接入网,随着用户业务需求的增加和多样化,在用户间合理地分配资源能够提供更优质的服务。在此,阐述了一种优化的误码率最小化自适应资源分配算法。仿真结果显示,在对系统误码率影响不大的情况下,该算法在原算法的基础上降低了复杂度。

Optical OFDM can be easily applied to existed PON-based access network. With the users＇needs increasing and diversification of business, rational resources allocation between users can provide better service. An optimized adaptive resource allocation algorithm which minimize the bit error rate is proposed, simulation results show that it can reduce the complexity based on the original algorithm, but has little effect on the system bit error rate.