Efficient User Scheduling Algorithm for Enhancing Zero-Forcing Beamforming in MIMO Broadcast Channels
- Authors
- Shin, Changeui; Go, Hyunsung; Choi, Seungwon
- Issue Date
- Oct-2011
- Publisher
- IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG
- Keywords
- MU-MIMO; user selection; multiuser channels; Diversity methods; Broadcast channels
- Citation
- IEICE TRANSACTIONS ON COMMUNICATIONS, v.E94B, no.10, pp.2908 - 2911
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEICE TRANSACTIONS ON COMMUNICATIONS
- Volume
- E94B
- Number
- 10
- Start Page
- 2908
- End Page
- 2911
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/167484
- DOI
- 10.1587/transcom.E94.B.2908
- ISSN
- 0916-8516
- Abstract
- This letter presents a novel user scheduling algorithm that provides a maximum sum-rate based on zero-forcing beamforming (ZFBF) in multiple-input multiple-output (MIMO) systems. The proposed technique determines primary user pairs in which the sum-rate exceeds a predetermined threshold. To determine the threshold, we define the maximum-sum-rate criterion (MSRC) derived from the extreme value theory (EVT). Applying the MSRC in ZFBF-based user scheduling, we find that the performance of the proposed method is comparable to that of the exhaustive searching scheme which has a greater computational load. Through computer simulations, we show that the proposed method outperforms the very well-known correlation-based method, semi-orthogonal user selection (SUS), yielding a sum rate that is about 0.57 bps/Hz higher when the transmit SNR is 10 dB with perfect CSI at BS and the numbers of users and transmit antennas in a cell are 100 and 4, respectively.
- Files in This Item
-
Go to Link
- Appears in
Collections - 서울 공과대학 > 서울 융합전자공학부 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/167484)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.