Name
Abstract | ||
|---|---|---|
It is known that the conventional semi-orthogonal user selection based on a greedy algorithm cannot provide a globally optimal solution due to its semi-orthogonal property. To find a more optimal user set and prevent the waste of the feedback resource at the base station, we present a multiuser multiple-input multiple-output system using a random beamforming (RBF) scheme, in which one unitary matrix is used. To reduce feedback overhead for channel quality information (CQI), we propose an efficient CQI quantizer based on a closed-form expression of expected SINR for selected users. Numerical results show that the RBF with the proposed CQI quantizer provides better throughput than conventional systems under minor levels of feedback. |
Year | DOI | Venue |
|---|---|---|
2012 | 10.1186/1687-1499-2012-36 | EURASIP J. Wireless Comm. and Networking |
Keywords | Field | DocType |
Mobile Station, Antenna Selection, User Selection, Effective Channel, Multiuser Diversity | Beamforming,Base station,Mobile station,Computer science,MIMO,Communication channel,Real-time computing,Greedy algorithm,Throughput,Telecommunications link | Journal |
Volume | Issue | ISSN |
2012 | 1 | 1687-1499 |
Citations | PageRank | References |
14 | 0.40 | 14 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Ji-Ho Song | 1 | 68 | 8.47 |
| Jong-Ho Lee | 2 | 20 | 2.21 |
| Seong-Cheol Kim | 3 | 396 | 40.30 |
| Young-Lok Kim | 4 | 17 | 4.26 |