【摘 要】
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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 positi
【机 构】
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School of Electronic and Information Engineering South China University of Technology, Guangzhou 510
【出 处】
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第13届全国博士生学术年会——物联网专题
论文部分内容阅读
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.
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