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。
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 Multiplcxing（OFDM） algorithm which minimizes total transmission power for a given bit rate under a given Bit Error Rate（BER）. The simulation result shows, when the mean number of bits per subchannel is less than 4, the BER performance of power minimization algorithm is greatly better than that of fix-bit modulation.
出处
《信息与电子工程》
2007年第1期15-21,共7页
information and electronic engineering
基金
重庆市教委应用研究课题2004cj13(03-04-13)
