TY - GEN
T1 - A cognitive transmission scheme with the best relay selection in cognitive radio networks
AU - Zou, Yulong
AU - Zhu, Jia
AU - Zheng, Baoyu
AU - Tang, Sulan
AU - Yao, Yu Dong
PY - 2010
Y1 - 2010
N2 - In this paper, we propose a cognitive transmission scheme with the best relay selection in a multiple-relay cognitive radio network to improve the secondary transmission performance while guaranteeing the quality-of-service (QoS) of the primary transmissions. We derive the closed-form expressions of outage probability for the secondary transmissions, called secondary outage probability, with the constraint of ensuring a target outage probability of primary transmissions (primary outage probability) for both the traditional non-relay and proposed best-relay selection based cognitive transmission schemes. Numerical results illustrate that, under a primary outage probability constraint, a secondary outage probability floor of the cognitive transmission occurs in high signal-to-noise ratio regions. Besides, the secondary outage probability floor of the proposed scheme is lower than that of the non-relay transmission, which is further reduced with an increasing number of cognitive relays.
AB - In this paper, we propose a cognitive transmission scheme with the best relay selection in a multiple-relay cognitive radio network to improve the secondary transmission performance while guaranteeing the quality-of-service (QoS) of the primary transmissions. We derive the closed-form expressions of outage probability for the secondary transmissions, called secondary outage probability, with the constraint of ensuring a target outage probability of primary transmissions (primary outage probability) for both the traditional non-relay and proposed best-relay selection based cognitive transmission schemes. Numerical results illustrate that, under a primary outage probability constraint, a secondary outage probability floor of the cognitive transmission occurs in high signal-to-noise ratio regions. Besides, the secondary outage probability floor of the proposed scheme is lower than that of the non-relay transmission, which is further reduced with an increasing number of cognitive relays.
KW - Cognitive radio
KW - Cognitive transmission
KW - Outage probability
KW - Relay selection
UR - http://www.scopus.com/inward/record.url?scp=79551643752&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79551643752&partnerID=8YFLogxK
U2 - 10.1109/GLOCOM.2010.5684339
DO - 10.1109/GLOCOM.2010.5684339
M3 - Conference contribution
AN - SCOPUS:79551643752
SN - 9781424456383
T3 - GLOBECOM - IEEE Global Telecommunications Conference
BT - 2010 IEEE Global Telecommunications Conference, GLOBECOM 2010
T2 - 53rd IEEE Global Communications Conference, GLOBECOM 2010
Y2 - 6 December 2010 through 10 December 2010
ER -