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http://dx.doi.org/10.5573/ieek.2013.50.1.027

Capacity Optimization of Two-way Amplify-and Forward Relay Networks  

Hanif, Mohammad Abu (Division of Electronic Engineering, Chonbuk National University)
Lee, Moon Ho (Division of Electronic Engineering, Chonbuk National University)
Park, Ju Yong (Department of Internet Information and Communication, Shyngyeong University)
Publication Information
Journal of the Institute of Electronics and Information Engineers / v.50, no.1, 2013 , pp. 27-33 More about this Journal
Abstract
In this paper, we propose a pilot based channel estimation technique in two-way relay networks. We propose to transmit a pilot symbol together with the data symbol during transmission. In absence of Channel State Information (CSI), destination uses the pilot symbol to estimate the channel. In this system, the relay amplifies the pilot and the data symbol then forward them to the destination using amplify and forward (AF) protocol. We assume that the relay gain is fixed, so the relay does not need to estimate the channel, the destination only estimate the channel. We apply well-known Least-square (LS) and minimum mean-square error (MMSE) channel estimation methods to estimate the channel.
Keywords
two-way relay channel; LS; MMSE; MIMO; Channel Estimation;
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