一种基于电力线通信的OFDM自适应比特与功率分配算法

An Adaptive Bit Loading and Power Allocation Algorithm in OFDM System for Powerline Communication

摘要:

针对室内电力线信道的基本特性建立了基本的信道模型,并研究了一种功率最小化自适应正交频分复用(Orthogonal Frequency-Division Multiplexing,OFDM)算法,在给定比特率和误码率(Bit Error Rate,BER)的情况下,使发射功率最小。通过仿真结果表明,在每个子信道的平均调制比特数不高(<4)的情况下,功率最小化算法的误码率性能明显好于固定调制。

Abstract:

The basic features of indoor powerline channel are presented in this paper,as well as relevant model.Based on the model,this paper also proposes an adaptive Orthogonal Frequency-Division Multiplexing(OFDM) algorithm which minimizes total transmission powe