Low Complexity Zeroforcing Precoder Design Under Per-Antenna Power Constraints

The K-user multiple-input single-output broadcast channel is considered under per-antenna power constraints, i.e., each transmit antenna must satisfy its own power constraint. A low complexity zeroforcing (ZF) precoder is proposed when the number of transmit antennas M is greater than K. The propose...

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Bibliographic Details
Published inIEEE communications letters Vol. 19; no. 9; pp. 1556 - 1559
Main Authors Jang, Jinyoung, Jeon, Sang-Woon, Chae, Hyukjin, Cha, Hyun-Su, Kim, Dong Ku
Format Journal Article
LanguageEnglish
Published New York IEEE 01.09.2015
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Algorithm design and analysis
Antennas
Broadcasting antennas
Channels
Complexity
Computation
Computational complexity
Construction
Matrices
MIMO
multi-antenna
Optimization
perantenna power constraints
precoder design
Spectra
Transmitting antennas
zeroforcing
multi-antenna
per-antenna power constraints
precoder design
Computational complexity
zeroforcing
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Summary:The K-user multiple-input single-output broadcast channel is considered under per-antenna power constraints, i.e., each transmit antenna must satisfy its own power constraint. A low complexity zeroforcing (ZF) precoder is proposed when the number of transmit antennas M is greater than K. The proposed precoder design significantly reduces computational complexity for the precoder construction while attaining the sum spectral efficiency close to that achievable by the optimal ZF precoder.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:1089-7798
1558-2558
DOI:10.1109/LCOMM.2015.2431252