Low Complexity Transmit Antenna Selection with Power Balancing in OFDM Systems
- Authors
- Park, Ki-Hong; Ko, Young-Chai; Alouini, Mohamed-Slim
- Issue Date
- 10월-2010
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Transmit antenna selection; orthogonal frequency division multiplexing; power balancing constraint; adaptive modulation
- Citation
- IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, v.9, no.10, pp.3018 - 3023
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
- Volume
- 9
- Number
- 10
- Start Page
- 3018
- End Page
- 3023
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/115549
- DOI
- 10.1109/TWC.2010.09.100736
- ISSN
- 1536-1276
- Abstract
- In this paper, we consider multi-carrier systems with multiple transmit antennas under the power balancing constraint, which is defined as the constraint that the power on each antenna should be limited under a certain level due to the linearity of the power amplifier of the RF chain. Applying transmit antenna selection and fixed-power variable-rate transmission per subcarrier as a function of channel variations, we propose an implementation-friendly antenna selection method which offers a reduced complexity in comparison with the optimal antenna selection scheme. More specifically, in order to solve the subcarrier imbalance across the antennas, we operate a two-step reallocation procedure to minimize the loss of spectral efficiency. We also provide an analytic lower bound on the spectral efficiency for the proposed scheme. From selected numerical results, we show that our suboptimal scheme offers almost the same spectral efficiency as the optimal one.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Engineering > School of Electrical Engineering > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.