Energy efficient precoder design for MIMO-OFDM with rate-dependent circuit power

This paper studies an energy efficient design of precoders for point-to-point multiple-input-multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) systems. Differently from traditional approaches, the optimal power allocation strategy is studied by modelling the circuit power as a...

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Published in:2015 IEEE International Conference on Communications (ICC) pp. 1897 - 1902
Main Authors: Zijian Wang, Stupia, Ivan, Vandendorpe, Luc
Format: Conference Proceeding
Language:English
Published: IEEE 01.06.2015
Subjects:
Information rates
Linear programming
MIMO
Noise
OFDM
Power demand
Wireless communication
ISSN:1550-3607
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Abstract This paper studies an energy efficient design of precoders for point-to-point multiple-input-multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) systems. Differently from traditional approaches, the optimal power allocation strategy is studied by modelling the circuit power as a rate-dependent function. We show that if the circuit power is a constant plus an increasing and convex function of the transmission rate, the problem of minimizing the consumed energy per bit received can be reformulated as a convex fractional program and solved by means of a bisection algorithm. The impact of the some system parameters is investigated either analytically or by means of computational results.
AbstractList This paper studies an energy efficient design of precoders for point-to-point multiple-input-multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) systems. Differently from traditional approaches, the optimal power allocation strategy is studied by modelling the circuit power as a rate-dependent function. We show that if the circuit power is a constant plus an increasing and convex function of the transmission rate, the problem of minimizing the consumed energy per bit received can be reformulated as a convex fractional program and solved by means of a bisection algorithm. The impact of the some system parameters is investigated either analytically or by means of computational results.
Author Zijian Wang
Stupia, Ivan
Vandendorpe, Luc
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  givenname: Ivan
  surname: Stupia
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  givenname: Luc
  surname: Vandendorpe
  fullname: Vandendorpe, Luc
  email: Luc.Vandendorpe@uclouvain.be
  organization: Inst. of Inf. & Commun. Technol., Electron. & Appl. Math., Univ. Catholique de Louvain, Louvain-la-Neuve, Belgium
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Snippet This paper studies an energy efficient design of precoders for point-to-point multiple-input-multiple-output (MIMO) orthogonal frequency-division multiplexing...
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StartPage 1897
SubjectTerms Information rates
Linear programming
MIMO
Noise
OFDM
Power demand
Wireless communication
Title Energy efficient precoder design for MIMO-OFDM with rate-dependent circuit power
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