Sum-Rate Maximization of Multicell MISO Networks With Limited Information Exchange
SCIE
SCOPUS
- Title
- Sum-Rate Maximization of Multicell MISO Networks With Limited Information Exchange
- Authors
- Kim, Youjin; Yang, Hyun Jong
- Date Issued
- 2020-07
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Abstract
- Although there have been extensive studies on transmit beamforming in multi-input single-output (MISO) multicell networks, achieving optimal sum-rate with limited channel state information (CSI) is still a challenge even with a single user per cell. A novel cooperative downlink multicell MISO beamforming scheme is proposed with highly limited information exchange among the base stations (BSs) to maximize the sum-rate. In the proposed scheme, each BS can design its beamforming vector with only local CSI based on limited information exchange on CSI. Unlike previous studies, the proposed beamforming design is non-iterative and does not require any vector or matrix feedback but requires only quantized scalar information. The proposed scheme closely achieves the optimal sum-rate bound in almost all signal-to-noise ratio regime based on non-iterative optimization with lower amount of information exchange than existing schemes, which is justified by numerical simulations.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/105585
- DOI
- 10.1109/tvt.2020.2981391
- ISSN
- 0018-9545
- Article Type
- Article
- Citation
- IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, vol. 69, no. 7, page. 7247 - 7263, 2020-07
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