Precoder design for MIMO systems with sum power and per-antenna power constraints

A precoder design method is proposed to maximise the achievable rate of a multi-input multi-output (MIMO) system which transmits multi-streams under sum power and per-antenna power constraints (PAPCs). The proposed method computes the optimal precoder maximising the achievable rate under the convent...

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Bibliographic Details
Published in:Electronics letters Vol. 54; no. 16; pp. 980 - 982
Main Authors: Choi, J, Oh, H
Format: Journal Article
Language:English
Published: The Institution of Engineering and Technology 09.08.2018
Subjects:
achievable rate maximisation
antenna arrays
candidate precoder
computer simulations
conventional sum power constraint
distance minimisation
Information and communications
MIMO communication
multiinput multioutput system
multistreams
optimal SPC precoder
PAPC precoders
per‐antenna power constraints
precoder design method
precoding
precoding MIMO system
precoding
computer simulations
candidate precoder
multistreams
multiinput multioutput system
conventional sum power constraint
precoder design method
PAPC precoders
precoding MIMO system
distance minimisation
optimal SPC precoder
antenna arrays
per-antenna power constraints
MIMO communication
achievable rate maximisation
ISSN:0013-5194, 1350-911X, 1350-911X
Online Access:Get full text
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Summary:A precoder design method is proposed to maximise the achievable rate of a multi-input multi-output (MIMO) system which transmits multi-streams under sum power and per-antenna power constraints (PAPCs). The proposed method computes the optimal precoder maximising the achievable rate under the conventional sum power constraint (SPC), and then finds a precoder satisfying the SPC and PAPCs by minimising the distance between the optimal SPC precoder and a candidate precoder. Using the proposed approach, a concise closed-form solution is derived for a precoding MIMO system with the SPC and PAPCs. It is shown that the proposed precoder includes the optimal SPC and PAPC precoders as two extreme cases, and simulations demonstrate the validity of the proposed precoder.
ISSN:0013-5194
1350-911X
1350-911X
DOI:10.1049/el.2018.0786