OFDM based link adaptive one-way DF relaying

Yildirim, Mete; İlhan, Hacı

doi:10.1016/j.aeue.2016.02.001

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“…Both [15] and [16] studied in two-way MIMO relay networks, where they derived the optimal training structure and the optimal power allocation to minimize MSE. [17] extended the channel estimation to frequency selective channels by applying the orthogonal frequency division multiplex (OFDM) modulation.…”

Section: Introductionmentioning

confidence: 99%

Segment Training Based Individual Channel Estimation for Multi-pair Two-Way Relay Network with Power Allocation

2018

KSII TIIS

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In this paper, we design a segment training based individual channel estimation (STICE) scheme for the classical two-way relay network (TWRN) with multi-pair sources (MPS) and amplify-and-forward (AF). We adopt the linear minimum mean square error (LMMSE) channel estimator to minimize the mean square error (MSE) without channel estimation error, where the optimal power allocation strategy from the relay for different sources is obtained. Then the MSE gains are given with different source pairs among the proposed power allocation scheme and the existing power allocation schemes. Numerical results show that the proposed method outperforms the existing ones.

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Section: Introductionmentioning

confidence: 99%