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Amplify-and-Forward Distributed Beamforming with Local CSI in the Presence of Interferences

Title
Amplify-and-Forward Distributed Beamforming with Local CSI in the Presence of Interferences
Authors
Kim, Jung-BinChoi, Ji-WoongChoi, HyukCioffi, John M.
DGIST Authors
Choi, Ji-Woong
Issue Date
2015
Citation
Mathematical Problems in Engineering
Type
Article
Article Type
Article
Keywords
Amplify-and-ForwardBeamformingCapacity ScalingChannel State InformationCochannel Interference (CCI)Distributed Beam-FormingInterference Power
ISSN
1024-123X
Abstract
This paper introduces an optimum amplify-and-forward (AF) distributed beamforming (DBF) in the presence of cochannel interference (CCI) when only local channel-state information (CSI) is available at each relay. It is shown that the proposed DBF closely achieves the performance obtained with global CSI when interference power toward relays is small or there are a large number of interferers but greatly reduces the complexity and overhead. The proposed DBF provides significant improvements over the conventional DBF designed without considering CCI at the cost of slightly increased complexity and overhead and achieves the capacity scaling of 1 / 2 log K through K relays, where 1 / 2 log K corresponds to the maximal capacity scaling when there is no CCI. © 2015 Jung-Bin Kim et al.
URI
http://hdl.handle.net/20.500.11750/5221
DOI
10.1155/2015/892757
Publisher
Hindawi Publishing Corporation
Related Researcher
  • Author Choi, Ji Woong CSP(Communication and Signal Processing) Lab
  • Research Interests Communication System; Signal Processing; Communication Circuit Design; 생체 신호 통신 및 신호 처리; 뇌-기계 인터페이스(BMI); 차세대 교차계층 통신 및 신호 처리; 5G 모바일 통신
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Collection:
Department of Information and Communication EngineeringCSP(Communication and Signal Processing) Lab1. Journal Articles


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