Title: Energy-Bandwidth Efficiency Tradeoff in MIMO Multi-Hop Wireless Networks
Authors: Chen, Chih-Liang
Stark, Wayne E.
Chen, Sau-Gee
Department of Electronics Engineering and Institute of Electronics
Keywords: Communication networks;MIMO;Communication systems
Issue Date: 1-Sep-2011
Abstract: This paper considers a MIMO multi-hop network and analyzes the relationship between its energy consumption and bandwidth efficiency. Its minimum energy consumption is formulated as an optimization problem. By taking both transmit antennas (TAs) and receive antennas (RAs) into consideration, the energy-bandwidth efficiency tradeoff in the networks is investigated. Moreover, the minimum energy of an equally-spaced relaying strategy is investigated for various numbers of antennas. In addition, the minimum energy over all possible antenna pairs is derived. Finally, the effect of the number of hops on the energy-bandwidth efficiency tradeoff is considered. For a fixed antenna pair, the minimum energy over all possible rates and hop numbers are obtained. Generally, the routes with more hops minimize the energy consumption in the low effective rate region. On the other hand, in the high effective rate region, the routes with fewer hops minimize the energy consumption.
URI: http://dx.doi.org/10.1109/JSAC.2011.110904
ISSN: 0733-8716
DOI: 10.1109/JSAC.2011.110904
Volume: 29
Issue: 8
Begin Page: 1537
End Page: 1546
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