单用户OFDM系统中一种新的资源分配算法

A New Resource Allocation Algorithm for Single-User OFDM System

针对自适应OFDM系统中满足用户QoS(这里主要指用户带宽及误码率这两个指标)要求的资源(比特功率)分配这一问题,提出了一种新的算法。该算法以每次比特分配时,使得每比特(一次可分配多比特信息)的功率代价最小为原则,获得了良好的性能。仿真结果表明:该算法在满足用户QoS要求的情况下,其发射总功率比现有的同类算法小,性能更佳。

This paper proposes a new adaptive bit and power allocation algorithm for single user adaptive OFDM system so as to satisfy its user＇s QoS （mainly prefer to user＇s data transmission rate and error rate） requirement. This new algorithm fries to minimize the required transmit power per-bit when the bit is allocated. Simulations illustrate that in the same transmission circumstance, the total transmit power of the proposed algorithm is less than any other algorithm for this kind of single-user adaptive OFDM system, and its performance is better than any others.