TY - GEN
T1 - Relaying energy allocation in training-based amplify and forward relay communications
AU - Zhou, Xiangyun
AU - Lamahewa, Tharaka A.
AU - Sadeghi, Parastoo
AU - Hjørungnes, Are
PY - 2012
Y1 - 2012
N2 - We consider relay-assisted communication in a training-based transmission scheme. Each transmission block consists of a training phase and a data transmission phase. The relay node employs the amplify-and-forward protocol during all transmissions. We focus on the relay signaling design and investigate the benefit of allowing for different relaying power during the training phase and the data transmission phase. Specifically, the relaying energy allocation between the two phases is optimized for maximizing the average received signal-to-noise ratio at the destination node. We study this optimization problem for both single-antenna relay and multi-antenna relay and derive a simple closed-form relaying energy allocation strategy that achieves near-optimal performance. This closed-form strategy depends only on the length of the data transmission phase but not on other system parameters such as the relaying energy budget, the number of antennas at the relay, and the distances between the source, relay and destination nodes.
AB - We consider relay-assisted communication in a training-based transmission scheme. Each transmission block consists of a training phase and a data transmission phase. The relay node employs the amplify-and-forward protocol during all transmissions. We focus on the relay signaling design and investigate the benefit of allowing for different relaying power during the training phase and the data transmission phase. Specifically, the relaying energy allocation between the two phases is optimized for maximizing the average received signal-to-noise ratio at the destination node. We study this optimization problem for both single-antenna relay and multi-antenna relay and derive a simple closed-form relaying energy allocation strategy that achieves near-optimal performance. This closed-form strategy depends only on the length of the data transmission phase but not on other system parameters such as the relaying energy budget, the number of antennas at the relay, and the distances between the source, relay and destination nodes.
UR - http://www.scopus.com/inward/record.url?scp=84859054769&partnerID=8YFLogxK
U2 - 10.1109/AusCTW.2012.6164897
DO - 10.1109/AusCTW.2012.6164897
M3 - Conference contribution
SN - 9781457719622
T3 - 2012 Australian Communications Theory Workshop, AusCTW'12
SP - 1
EP - 6
BT - 2012 Australian Communications Theory Workshop, AusCTW'12
T2 - 2012 Australian Communications Theory Workshop, AusCTW'12
Y2 - 30 January 2012 through 2 February 2012
ER -