Suppression of relative-fading by diversity reception in wireless network coding 2-way relaying

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F12%3A00199408" target="_blank" >RIV/68407700:21230/12:00199408 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Suppression of relative-fading by diversity reception in wireless network coding 2-way relaying

Popis výsledku v původním jazyce

We identify two distinct sources of fading significantly degrading performance of coherent Wireless Network Coding (WNC) in a wireless 2-way relay channel: absolute-fading and relativefading. Absolute-fading corresponds to a standard small-scale fading of a wireless point-to-point channel when absolute values of channel parameters are insufficiently strong. Relative-fading is a unique paradigm of WNC occurring when a ratio of channel parameters is close to certain critical values. In this paper, we showthat diversity reception techniques (essential to restrain absolute-fading) significantly suppresses relative-fading as well. We measure the impact of relative-fading on uncoded error performance and ergodic alphabet constrained capacity of representative QPSK alphabet in wireless Rayleigh/Rice channel. We conclude that relativefading is sufficiently suppressed by systems with a reasonable level of diversity which is typically assumed if only absolute-fading is present.

Název v anglickém jazyce

Suppression of relative-fading by diversity reception in wireless network coding 2-way relaying

Popis výsledku anglicky

We identify two distinct sources of fading significantly degrading performance of coherent Wireless Network Coding (WNC) in a wireless 2-way relay channel: absolute-fading and relativefading. Absolute-fading corresponds to a standard small-scale fading of a wireless point-to-point channel when absolute values of channel parameters are insufficiently strong. Relative-fading is a unique paradigm of WNC occurring when a ratio of channel parameters is close to certain critical values. In this paper, we showthat diversity reception techniques (essential to restrain absolute-fading) significantly suppresses relative-fading as well. We measure the impact of relative-fading on uncoded error performance and ergodic alphabet constrained capacity of representative QPSK alphabet in wireless Rayleigh/Rice channel. We conclude that relativefading is sufficiently suppressed by systems with a reasonable level of diversity which is typically assumed if only absolute-fading is present.

Druh

O - Ostatní výsledky

CEP obor

JA - Elektronika a optoelektronika, elektrotechnika

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů