对OFDM系统进行自适应分配，主要对子载波，比特和功率进行分配，已达到降低发射端功率的目标。-Adaptive Allocation for OFDM systems, the main pair carrier, bit, and power distribution, has reached the goal of reducing the transmitter power.

绍了OFDM技术的基本原理及系统实现，并分析了OFDM系统的优缺点；接着论述了自适应比特功率分配算法的原理和步骤，同时还着重介绍了注水算法，并对该算法进行了实验仿真，进一步论证了该算法是最优的功率分配算法-This thesis introduces the basic principle and implementation of the OFDM system firstly, and analyzes the advantages and disadvantages of the OFDM

在OFDM自适应系统中，经常需要用到chow算法。该算法是最初的比特功率分配算法。-OFDM adaptive systems often need to use chow algorithm. The algorithm is the first bit and power allocation algorithm.