Name
Title | ||
|---|---|---|
Energy-efficient resource allocation for multi-user two-way relay-assisted OFDM system |
Abstract | ||
|---|---|---|
Energy-efficient communication has attracted more and more attention due to the large energy consumption in wireless communication network. Relay-assisted OFDM cellular network is one of the most effective frameworks in the IMT-Advanced system to improve the spectral efficiency. This paper investigates the energy-efficient resource allocation for multiuser two-way multi-relay OFDM network. We formulate a joint optimization problem of subcarrier pairing based on energy-efficient subcarrier assignment, relay selection, rate allocation to minimize the total transmit power under individual uplink and downlink QoS requirement for each user. In order to solve the optimization problem with low computational complexity, the problem is divided into three subproblems. Then, the optimal subcarrier assignment algorithm is proposed as well as the Lagrange dual method is applied to solve the optimal rate allocation. Furthermore, the simulation results illustrate our analysis and the performance of the proposed schemes. |
Year | DOI | Venue |
|---|---|---|
2014 | 10.1109/ICT.2014.6845098 | ICT |
Keywords | Field | DocType |
relay networks (telecommunication),cellular radio,joint optimization problem,quality of service,ofdm modulation,energy conservation,telecommunication power management,multi-access systems,relay selection,qos requirement,wireless communication network,channel allocation,cellular network,multiuser ofdm system,rate allocation,energy efficient communication,imt-advanced system,two-way relay assisted ofdm system,energy efficient resource allocation,subcarrier pairing,subcarrier assignment,spectral efficiency,lagrange dual method,uplink,optimization,resource management,wireless communication,ofdm | Subcarrier,Computer science,Computer network,Resource allocation,Spectral efficiency,Cellular network,Channel allocation schemes,Optimization problem,Relay,Telecommunications link | Conference |
Citations | PageRank | References |
2 | 0.38 | 8 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Yinjun Liu | 1 | 25 | 5.56 |
| Shi Yan | 2 | 2 | 0.72 |
| Xiangling Li | 3 | 2 | 0.38 |
| Yujing Shang | 4 | 2 | 1.06 |