Name
Title | ||
|---|---|---|
Resource allocation for OFDMA relay-enhanced system with cooperative selection diversity |
Abstract | ||
|---|---|---|
The cooperative selection diversity (CSD) scheme which dynamically selects the best transmission scheme between decode-and-forward relaying and direct transmission outperforms the other complex cooperative diversity schemes in terms of throughput and implementation complexity. In this paper, we formulate the optimal resource allocation problem with a fairness constraint in the downlink of OFDMA relay-enhanced system when CSD based transmissions are considered. The problem is linearized into a binary integer programming problem by using a constant power allocation. To solve the linear programming problem, we proposed a heuristic joint path selection and sub-channel allocation algorithm. Moreover, a void filling algorithm is designed to make full use of the resources. Simulation results demonstrate that our path selection rule based on the end-to-end achievable data rate and the void filling algorithm achieve more system throughput especially when the proportion of the two zones used in the two-slot relaying pattern is far away from the optimal value. The heuristic resource allocation algorithm provides a suboptimal solution to gain a tradeoff between system throughput maximization and fairness. |
Year | DOI | Venue |
|---|---|---|
2009 | 10.1109/WCNC.2009.4917947 | WCNC |
Keywords | Field | DocType |
heuristic joint path selection,heuristic resource allocation algorithm,ofdma relay-enhanced system,linear programming problem,optimal resource allocation problem,constant power allocation,binary integer programming problem,path selection rule,sub-channel allocation algorithm,cooperative selection diversity,integer programming,ofdm modulation,rule based,algorithm design and analysis,decoding,downlink,optimization,resource management,linear programming,linear program,cooperative diversity,resource allocation,throughput | Resource management,Heuristic,Mathematical optimization,Cooperative diversity,Computer science,Real-time computing,Integer programming,Resource allocation,Linear programming,Throughput,Telecommunications link | Conference |
Citations | PageRank | References |
8 | 0.73 | 8 |
Authors | ||
3 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Liping Wang | 1 | 20 | 1.83 |
| Yusheng Ji | 2 | 1459 | 162.16 |
| Fuqiang Liu | 3 | 270 | 24.48 |