Name
Title | ||
|---|---|---|
Alternate convex search method for resource allocation in OFDMA AF relay networks with energy harvesting |
Abstract | ||
|---|---|---|
Joint optimization of the source transmission power, the relay transmission power, and the time switching (TS) ratio is investigated in orthogonal frequency division multiple access wireless powered relay networks. The relay does not have embedded energy supply and needs to first harvest energy from the received signals from the source before using amplify and forward transmission strategy for forwarding transmission. Time switching scheme is used by the relay for wireless information and power transfer. The resource allocation problem aims at maximizing the sum rate under the source transmission power, the relay harvested energy, and the TS ratio constraints. The joint resource allocation problem is formulated as an optimization problem, which is non-convex and generally difficult to solve. Then an alternate convex search algorithm, which alternately finds the optimal solution to one kind of variables by fixing the other two kinds of variables, is proposed. The convergence of the algorithm is proven as well. Simulations verify the better performance of the proposed algorithm compared with two related algorithms. |
Year | DOI | Venue |
|---|---|---|
2015 | 10.1109/ICCChina.2015.7448618 | 2015 IEEE/CIC International Conference on Communications in China (ICCC) |
Keywords | Field | DocType |
alternate convex search method,OFDMA AF relay networks,energy harvesting,source transmission power,relay transmission power,time switching ratio,orthogonal frequency division multiple access,wireless powered networks,amplify and forward transmission strategy,forwarding transmission,wireless information,power transfer,TS ratio constraints,joint resource allocation problem,optimization problem,convergence | Relay channel,Mathematical optimization,Search algorithm,Wireless,Computer science,Orthogonal frequency-division multiple access,Resource allocation,Maximum power transfer theorem,Optimization problem,Relay | Conference |
Citations | PageRank | References |
1 | 0.35 | 9 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Yanyan Shen | 1 | 457 | 49.77 |
| Xiaoxia Huang | 2 | 97 | 10.62 |
| Bo Yang | 3 | 361 | 40.37 |
| Shu-Qiang Wang | 4 | 23 | 9.89 |