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Threshold-based opportunistic zero-forcing beamforming for two-user downlink systems with outage constraints
- Authors
- Jeong, Dae kyo; Kim, Dongwoo
- Issue Date
- Jan-2016
- Publisher
- IEEE Computer Society
- Keywords
- outage constraint; Two-user downlink systems; zero-forcing beamforming
- Citation
- International Conference on Advanced Technologies for Communications, v.2016, pp.68 - 71
- Indexed
- OTHER
- Journal Title
- International Conference on Advanced Technologies for Communications
- Volume
- 2016
- Start Page
- 68
- End Page
- 71
- ISSN
- 2162-1020
- Abstract
- In this paper, we present the exact outage analysis of the two-user downlink systems using the threshold-based opportunistic zero-forcing beamforming (TBO-ZFB) with a second mobile station's outage constraint. TBO-ZFB dynamically switches between a beamforming weight vector and a zero-forcing beamforming (ZFB) weight vector (using linear precoding for first mobile station (MS)) by comparing the values between a second MS's signal-to-noise ratio (SNR) and a predetermined threshold. We provide that the threshold is satisfied with the second MS's outage constraint. Numerical results show that the outage performance of first MS using TBO-ZFB is better than the ZFB and the threshold is satisfied with the second MS's outage constraints. © 2015 IEEE.
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Related Researcher
- Kim, Dong woo
- ERICA 공학대학 (SCHOOL OF ELECTRICAL ENGINEERING)