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Beamforming Transmission in Cognitive AF Relay Networks with Feedback Delay
Blekinge Tekniska Högskola, Sektionen för datavetenskap och kommunikation.
Blekinge Tekniska Högskola, Sektionen för datavetenskap och kommunikation.
Blekinge Tekniska Högskola, Sektionen för datavetenskap och kommunikation.
Vise andre og tillknytning
2013 (engelsk)Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

In this paper, we investigate the effect of feedback delay on outage probability (OP) and symbol error rate (SER) of cognitive amplify-and-forward (AF) relay networks with beamforming transmission in Rayleigh fading environment. It is assumed that the secondary transmitter and the secondary receiver are equipped with multiple antennas, whereas the relay and the primary user comprise of a single antenna. Furthermore, in this system, the secondary users use the underlay scheme in which the secondary transmitter and the relay can coexist with the primary user as long as their interference caused to the primary receiver is below a predefined threshold. Through our analysis, numerical results are provided to show the level of degradation of cognitive AF relay systems in proportion to the degree of feedback delay. In addition, we also present the effect of the number of antennas at the secondary transceiver on the performance of the considered system.

sted, utgiver, år, opplag, sider
Ho Chi Minh City: IEEE , 2013.
HSV kategori
Identifikatorer
URN: urn:nbn:se:bth-6961ISI: 000318220400022Lokal ID: oai:bth.se:forskinfo613B1F55EB77D772C1257B9400306393ISBN: 978-1-4673-2088-7 (tryckt)OAI: oai:DiVA.org:bth-6961DiVA, id: diva2:834518
Konferanse
International Conference on IEEE Computing, Management and Telecommunications (IEEE ComManTel)
Tilgjengelig fra: 2013-06-24 Laget: 2013-06-24 Sist oppdatert: 2017-03-16bibliografisk kontrollert

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Chu, Thi My ChinhPhan, HocDuong, Quang TrungZepernick, Hans-Jürgen

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Totalt: 143 treff
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