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Decentralized Beamf...
Decentralized Beamforming Design for Intelligent Reflecting Surface-Enhanced Cell-Free Networks
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- Huang, Shaocheng (author)
- KTH,Teknisk informationsvetenskap
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- Ye, Yu (author)
- KTH,Teknisk informationsvetenskap
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- Xiao, Ming, 1975- (author)
- KTH,Teknisk informationsvetenskap
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- Poor, H. Vincent (author)
- Princeton Univ, Dept Elect Engn, Princeton, NJ 08544 USA.
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- Skoglund, Mikael, 1969- (author)
- KTH,Teknisk informationsvetenskap
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(creator_code:org_t)
- Institute of Electrical and Electronics Engineers (IEEE), 2021
- 2021
- English.
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In: IEEE Wireless Communications Letters. - : Institute of Electrical and Electronics Engineers (IEEE). - 2162-2337 .- 2162-2345. ; 10:3, s. 673-677
- Related links:
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https://kth.diva-por... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Cell-free networks are considered to be a promising distributed network architecture to satisfy the increasing number of users and high rate expectations in beyond-5G systems. However, to further enhance network capacity, an increasing number of high-cost base stations (BSs) is required. To address this problem and inspired by the cost-effective intelligent reflecting surface (IRS) technique, we propose a fully decentralized design framework for cooperative beamforming in IRS-aided cell-free networks. We first transform the centralized weighted sum-rate maximization problem into a tractable consensus optimization problem, and then an incremental alternating direction method of multipliers (ADMM) algorithm is proposed to locally update the beamformer. The complexity and convergence of the proposed method are analyzed, and these results show that the performance of the new scheme can asymptotically approach that of the centralized one as the number of iterations increases. Results also show that IRSs can significantly increase the system sum-rate of cell-free networks and the proposed method outperforms existing decentralized methods.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Telekommunikation (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Telecommunications (hsv//eng)
Keyword
- Array signal processing
- Optimization
- Transforms
- Channel estimation
- Wireless communication
- Power demand
- Interference
- Beamforming
- cell-free networks
- intelligent reflecting surface
- decentralized optimization
Publication and Content Type
- ref (subject category)
- art (subject category)
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