Statistical Distributions of OFDM Signals on Multi-Path Fading Channel
Ait error rate (BER) performance of the OFDM system has been widely studied on multi-path fading channel with the channel gain being modeled as various distributions. But the statistical distribution of the OFDM signal on the receiver side has neither been well studied, nor given the closeformed expression. In order to design the optimum detection criteria, especially for the hypothesis test of the OFDM symbol, the probability density function (pdf) of the received OFDM signal on the multi-path channel is presented in this paper. At .rst, the pdf of the frequency domain impulse response of the channel is derived through the characteristic function method. Secondly, we can show that the joint pdf of the complex channel frequency response and the complex additive white Gaussian noise leads to the pdf of the received OFDM symbol under the condition of given transmitted symbol on a given subcarrier. Lastly, the theoretical analysis is veri.ed by the simulations, and the theoretical and simulation results agree with each other perfectly.
OFDM probability density function multi-path channel optimum detection
Renhui Xu Ming Chen Chang Tian Xuming Lu Chunjuan Diao
Nanjing Institute of Communication Engineering, Nanjing, China 210007 National Mobile Communication Research LaboratorySoutheast University, Nanjing, China 210096 Changzhou Textile Garment Institute, Changzhou, China 213164
国际会议
南京
英文
1-6
2011-11-09（万方平台首次上网日期，不代表论文的发表时间）