Name
Title | ||
|---|---|---|
Adaptive Power Allocation for Bidirectional Amplify-and-Forward Multiple-Relay Multiple-User Networks |
Abstract | ||
|---|---|---|
Owing to its spectral efficiency, bidirectional relaying is a promising candidate for information exchange in multiple-user cooperative networks. When the network is limited by resource constraints, amplify-and-forward (AaF) relay protocol is often the choice due to its simplicity and ease of use. Power allocation for AaF protocol has being extensively studied in unidirectional relay networks but how it can be implemented in two-way multiple-relay multiple-user networks has yet to be addressed. In this paper, we consider the adaptive power allocation in bidirectional AaF multiple-relay multiple-user networks. We show that when the multiple-user interference can be removed by a robust channel assignment algorithm, power allocation by maximizing the instantaneous sum rate or minimizing the symbol error rate can be suitably casted as a geometric programming (GP) problem. Simulation results show adaptive power allocation by GP outperforms that of equal power allocation scheme particularly when there is a single serving relay, and the gain can be as substantial when there are multiple serving relays. |
Year | DOI | Venue |
|---|---|---|
2010 | 10.1109/GLOCOM.2010.5683807 | Global Telecommunications Conference |
Keywords | Field | DocType |
amplify and forward communication,channel allocation,cooperative communication,geometric programming,interference suppression,protocols,AaF protocol,adaptive power allocation,bidirectional amplify-and-forward multiple-relay multiple-user networks,channel assignment algorithm,geometric programming problem,information exchange,instantaneous sum rate maximization,multiple serving relays,multiple-user cooperative networks,multiple-user interference,resource constraint amplify-and-forward relay protocol,single serving relay,spectral efficiency | Computer science,Fading,Signal-to-noise ratio,Communication channel,Computer network,Real-time computing,Interference (wave propagation),Spectral efficiency,Geometric programming,Channel allocation schemes,Relay | Conference |
ISSN | ISBN | Citations |
1930-529X E-ISBN : 978-1-4244-5637-6 | 978-1-4244-5637-6 | 5 |
PageRank | References | Authors |
0.45 | 15 | 4 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Ted C.-K. Liu | 1 | 82 | 4.42 |
| Wei Xu | 2 | 854 | 63.23 |
| Xiaodai Dong | 3 | 958 | 85.45 |
| Wu-Sheng Lu | 4 | 329 | 49.40 |