Name
Title | ||
|---|---|---|
Superposition Coding Scheme with Discrete Adaptive Modulation for Wireless Relay Systems |
Abstract | ||
|---|---|---|
A Superposition Coding (SC) scheme using discrete Adaptive Modulation (AM) for a three-node wireless relay system is proposed. In the proposed method, 2/4-QAM and 4/16-QAM hierarchical modulations are used to generate the SC message composed of a basic and superposed messages. We derive the analytical throughput expression of the system and determine the necessary conditions for guaranteeing optimal power allocation. The simulation results show that the proposed power allocation achieves a throughput close to the one obtained by exhaustive search. Moreover, over a large range of SNRs, the proposed method largely outperforms the conventional relaying methods such as multi-hop and cooperative diversity, proving the substantial benefits of SC even under practical discrete AM and decoding errors during SIC. |
Year | DOI | Venue |
|---|---|---|
2011 | 10.1109/VETECF.2011.6092859 | Vehicular Technology Conference |
Keywords | Field | DocType |
adaptive modulation,quadrature amplitude modulation,radio networks,QAM hierarchical modulations,SIC,cooperative diversity,discrete adaptive modulation,multi-hop diversity,power allocation,quadrature amplitude modulation,superposition coding scheme,three-node wireless relay system,wireless relay systems | Link adaptation,Quadrature amplitude modulation,Brute-force search,Computer science,Cooperative diversity,Computer network,Electronic engineering,Decoding methods,Throughput,Relay,Phase-shift keying | Conference |
ISSN | ISBN | Citations |
1090-3038 | 978-1-4244-8328-0 | 2 |
PageRank | References | Authors |
0.38 | 4 | 4 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Hirofumi Yamaura | 1 | 2 | 0.38 |
| M. Kaneko | 2 | 265 | 33.46 |
| Kazunori Hayashi | 3 | 230 | 28.52 |
| Hideaki Sakai | 4 | 262 | 77.04 |