Power Allocation for Linearly Precoded OFDM Systems with Imperfect CSIT

This paper is concerned with the energy-efficient transmission in linearly precoded orthogonal frequency division multiplexing (OFDM) systems with imperfect channel state information at the transmitter (CSIT). Convolutionally channel coding and iterative linear minimum mean square error (LMMSE) dete...

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Bibliographic Details
Published in:IEEE wireless communications letters 2013-06, Vol.2 (3), p.315-318
Main Authors: Xu, Chongbin, Yuan, Xiaojun, Ping, Li, Lin, Xiaokang
Format: Article
Language:English
Subjects:
Forward error correction
imperfect CSIT
Iterative decoding
iterative LMMSE detection
linear precoding
OFDM
Resource management
Robustness
Uncertainty
Wireless communication
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Summary:This paper is concerned with the energy-efficient transmission in linearly precoded orthogonal frequency division multiplexing (OFDM) systems with imperfect channel state information at the transmitter (CSIT). Convolutionally channel coding and iterative linear minimum mean square error (LMMSE) detection are employed. We focus on the design of power allocation strategies for this system to exploit the potential benefit of available CSIT. Numerical results demonstrate that the proposed designs can achieve the advantage provided by the available CSIT efficiently, and meanwhile are robust to the CSIT uncertainty.
ISSN:2162-2337
2162-2345
DOI:10.1109/WCL.2013.030613.120874