TY - GEN
T1 - Capacity analysis of outdated relay selection in opportunistic relaying system using an adaptive transmission technique
AU - Kim, Seokjung
AU - Lee, Seokwon
AU - Lee, Haesoon
AU - Hong, Daesik
PY - 2014/11/10
Y1 - 2014/11/10
N2 - In this paper, we investigate the impact of outdated channel state information (CSI) on the channel capacity of an opportunistic relaying system in conjunction with adaptive transmission techniques. We derive the closed-form expressions of the channel capacity and its associated outage probability for four adaptive transmission techniques: (1) optimal rate adaptation with constant transmit power, (2) optimal transmit power and rate adaptation, (3) channel inversion with fixed rate, and (4) truncated channel inversion with fixed rate. Analytical and numerical results show the effects of outdated CSI on the capacity of the optimal power and rate adaptation and the sub-optimal channel inversion techniques. In addition, we compare the channel capacity among various adaptive transmission techniques in the presence of outdated CSI, thereby illustrating the intuitive tradeoff between the achievable capacity and implementation complexity.
AB - In this paper, we investigate the impact of outdated channel state information (CSI) on the channel capacity of an opportunistic relaying system in conjunction with adaptive transmission techniques. We derive the closed-form expressions of the channel capacity and its associated outage probability for four adaptive transmission techniques: (1) optimal rate adaptation with constant transmit power, (2) optimal transmit power and rate adaptation, (3) channel inversion with fixed rate, and (4) truncated channel inversion with fixed rate. Analytical and numerical results show the effects of outdated CSI on the capacity of the optimal power and rate adaptation and the sub-optimal channel inversion techniques. In addition, we compare the channel capacity among various adaptive transmission techniques in the presence of outdated CSI, thereby illustrating the intuitive tradeoff between the achievable capacity and implementation complexity.
UR - http://www.scopus.com/inward/record.url?scp=84912091982&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84912091982&partnerID=8YFLogxK
U2 - 10.1109/WCNC.2014.6951916
DO - 10.1109/WCNC.2014.6951916
M3 - Conference contribution
AN - SCOPUS:84912091982
T3 - IEEE Wireless Communications and Networking Conference, WCNC
SP - 24
EP - 29
BT - IEEE Wireless Communications and Networking Conference, WCNC
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2014 IEEE Wireless Communications and Networking Conference, WCNC 2014
Y2 - 6 April 2014 through 9 April 2014
ER -