Novel Pilot Position Selection and Signal Reconstruction Methods for Frequency Domain Pilot Multiplexing Techniques of SC-FDE
In this paper, we investigate the frequency domain pilot multiplexing technique (FDPMT) for channel estimation of single carrier frequency domain equalization (SC-FDE) with a focus on the pilot position selection (PPS) problem at the transmitter and the signal reconstruction (SR) problem at the receiver.We for the first time discover and prove that the distorted signal block due to the removal of some equally spaced tones is comprised of an equal number of independent sub-blocks.To develop this property, we therefore propose a novel PPS method and a novel SR method as well.The proposed PPS method, which is based on the minimization of the most severe intersymbol interference among those sub-blocks, dispenses with a priori knowledge of the channel as well as the noise and imposes very low computational cost to the transmitter.On the other hand, the proposed SR method,which is based on the maximum-likelihood (ML) criterion, can be carried out sub-block-by-sub-block in parallel and sample-by-sample within each sub-block, saving the computational complexity of the receiver.Simulation results corroborate the superiority of both proposed methods over their existing counterparts in the sense of bit error rate performance.
SC-FDE,FDPMT pilot position selection ML criterion signal reconstruction
Beixiong Zheng Fangjiong Chen Miaowen Wen Fei Ji Hua Yu
School of Electronic and Information Engineering South China University of Technology, Guangzhou 510641, China
国内会议
广州
英文
60-71
2015-05-01（万方平台首次上网日期，不代表论文的发表时间）