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MIMO multi-relay networks with TAS/MRC and TAS/SC in Weibull fading channels
Vise andre og tillknytning
2012 (engelsk)Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

We examine transmit antenna selection with receiver maximal-ratio combining (TAS/MRC) and transmit antenna selection with receiver selection combining (TAS/SC) in multiple-input multiple-output (MIMO) relay networks. Amongst L two-hop relay links, a single relay offering the highest end-to-end signal-to-noise ratio (SNR) is activated. Assuming independent non-identically distributed Weibull fading between the hops, new closed-form asymptotic expressions for the outage probability and the symbol error rate are derived considering NS, NR, and ND antennas at the source, the relays, and the destination, respectively. Based on such expressions, the diversity order and the array gain for M-ary phase shift keying and M-ary quadrature amplitude modulation are analyzed. We highlight that the diversity order of TAS/MRC is the same as TAS/SC. As such, we explicitly characterize the SNR gap between TAS/MRC and TAS/SC as the ratio of their respective array gains. An interesting observation is reached that for equal per-hop SNRs, the SNR gap between the two protocols is independent of L.

sted, utgiver, år, opplag, sider
Sydney: IEEE , 2012.
Emneord [en]
Array gain, Asymptotic expressions, Closed form, Diversity order, M-ary phase shift keying, Maximal ratio combining (MRC), Multi relays, Outage probability, Relay links, Relay network, Selection combining, Signaltonoise ratio (SNR), Symbol error rate (SER), Transmit antenna selection, Weibull fading, Weibull fading channel
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Identifikatorer
URN: urn:nbn:se:bth-6933DOI: 10.1109/PIMRC.2012.6362742Lokal ID: oai:bth.se:forskinfoCD43B6348984E55BC1257B9B004090BEISBN: 9781467325691 (tryckt)OAI: oai:DiVA.org:bth-6933DiVA, id: diva2:834488
Konferanse
23rd International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
Merknad

Article number6362742

Tilgjengelig fra: 2013-07-01 Laget: 2013-07-01 Sist oppdatert: 2017-03-14bibliografisk kontrollert

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