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Wireless Personal Communications

Erschienen in:

01.03.2014

Probability Analysis of Capacity Gain by Cooperative Relaying Over Single-Hop OSTBC Transmission in Low SNR Regime

verfasst von: In-Ho Lee, Dongwoo Kim

Erschienen in: Wireless Personal Communications | Ausgabe 1/2014

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Abstract

In this paper, we investigate the capacity gain obtained by putting a multiple-antenna relay in an original single-hop multiple-input multiple-output system using an orthogonal space-time block code over uncorrelated Rayleigh fading channels. As relaying techniques, we consider decode-and-forward relaying as well as decouple-and-forward relaying in which no decoding is performed at the relay. Focusing on the low signal-to-noise ratio regime, closed-form expressions of the probability of the capacity gain are provided for the respective relaying schemes. The probability results in an explicit function of an average power ratio of the per-hop channel in dual-hop relaying to the single-hop channel. Numerical examples show the impact of the power ratio, the relaying strategy, the number of antennas and the relay location on the capacity gain, respectively.

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Titel: Probability Analysis of Capacity Gain by Cooperative Relaying Over Single-Hop OSTBC Transmission in Low SNR Regime
verfasst von: In-Ho Lee
Dongwoo Kim
Publikationsdatum: 01.03.2014
Verlag: Springer US
Erschienen in: Wireless Personal Communications / Ausgabe 1/2014
Print ISSN: 0929-6212
Elektronische ISSN: 1572-834X
DOI: https://doi.org/10.1007/s11277-013-1363-x

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