Name
Abstract | ||
|---|---|---|
This paper considers robust multi-cell coordinated beamforming (MCBF) design for downlink wireless systems, in the presence of channel state information (CSI) errors. By assuming that the CSI errors are complex Gaussian distributed, we formulate a chance-constrained robust MCBF design problem which guarantees that the mobile stations can achieve the desired signal-to-interference-plus-noise ratio (SINR) requirements with a high probability. A convex approximation method, based on semidefinite relaxation and tractable probability approximation formulations, is proposed. The goal is to solve the convex approximation formulation in a distributed manner, with only a small amount of information exchange between base stations. To this end, we develop a distributed implementation by applying a convex optimization method, called weighted variable-penalty alternating direction method of multipliers (WVP-ADMM), which is numerically more stable and can converge faster than the standard ADMM method. Simulation results are presented to examine the chance-constrained robust MCBF design and the proposed distributed implementation algorithm. |
Year | DOI | Venue |
|---|---|---|
2012 | 10.1109/GLOCOM.2012.6503905 | IEEE Global Communications Conference |
Keywords | Field | DocType |
Multicell coordinated beamforming,robust beamforming,chance constraint,outage probability,distributed beamforming | Beamforming,Base station,Mathematical optimization,Wireless systems,Computer science,Information exchange,Convex optimization,Complex normal distribution,Telecommunications link,Channel state information | Conference |
Volume | Issue | ISSN |
null | null | 2334-0983 |
Citations | PageRank | References |
4 | 0.44 | 8 |
Authors | ||
5 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Chao Shen | 1 | 122 | 10.15 |
| Tsung-Hui Chang | 2 | 1142 | 72.18 |
| Kun-Yu Wang | 3 | 223 | 9.04 |
| Zhengding Qiu | 4 | 241 | 21.99 |
| Chong-Yung Chi | 5 | 1319 | 102.57 |