In:
Science and Technology Development Journal, Viet Nam National University Ho Chi Minh City, Vol. 18, No. 3 ( 2015-08-30), p. 29-38
Abstract:
This paper proposes an outage analysis framework for cooperative cognitive networks with proactive relay selection and selection combining (SC) under licensed outage constraint, maximum transmit power constraint, independent non-identical (i.n.i) fading distributions, erroneous channel information, and licensed users’ interference. Towards this end, we firstly suggest power allocation for unlicensed transmitters to satisfy power constraints and account for erroneous channel information and licensed users’ interference. Then, we propose an exact closed-form outage probability formula for the unlicensed network to promptly evaluate system performance and provide useful insights into performance limits. Multiple results show performance trade-off between the unlicensed network and the licensed network, error floor in the unlicensed network, considerable system performance degradation owing to erroneous channel information and licensed users’ interference, and significant performance enhancement due to the increase in the number of relays.
Type of Medium:
Online Resource
ISSN:
1859-0128
,
1859-0128
DOI:
10.32508/stdj.v18i3.882
Language:
Unknown
Publisher:
Viet Nam National University Ho Chi Minh City
Publication Date:
2015
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