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Capacity expression and power allocation for arbitrary modulation and coding rates
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Guo, Weisi, Wang, Siyi and Chu, Xiaoli (2013) Capacity expression and power allocation for arbitrary modulation and coding rates. In: 2013 IEEE Wireless Communications and Networking Conference, Shanghai, China, 7-10 April 2013. Published in: 2013 IEEE Wireless Communications and Networking Conference (WCNC) pp. 3294-3299. ISBN 9781467359382. doi:10.1109/WCNC.2013.6554660 ISSN 1525-3511.
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Official URL: http://dx.doi.org/10.1109/WCNC.2013.6555091
Abstract
This paper addresses the dichotomy that exists in the analysis of wireless channels, which exists between employing: the tractable Shannon capacity bound and the accurate simulated capacity of modulation and coding schemes (MCSs). By considering the effects of mutual information saturation in modulation schemes and the efficiency of error correction codes, the paper proposes a new tractable capacity expression that can accurately represent any MCS and adaptive combinations. To demonstrate this methodology, the paper considers the adaptive MCS capacity for the Long-Term-Evolution (LTE) system. The potential benefit is that system-level optimization can employ the more accurate capacity expression. In the second part of the paper, the proposed capacity expression is applied to optimize power allocation to the parallel channels of a MIMO system. The results show that when mutual information saturation occurs, neither the water-filling nor channel inversion schemes are optimal. In fact the optimal power allocation is a combination of the two aforementioned schemes, switching adaptively between their relative merits.
Item Type: | Conference Item (Paper) | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||
Journal or Publication Title: | 2013 IEEE Wireless Communications and Networking Conference (WCNC) | ||||
Publisher: | IEEE | ||||
ISBN: | 9781467359382 | ||||
ISSN: | 1525-3511 | ||||
Book Title: | 2013 IEEE Wireless Communications and Networking Conference (WCNC) | ||||
Official Date: | 2013 | ||||
Dates: |
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Page Range: | pp. 3294-3299 | ||||
DOI: | 10.1109/WCNC.2013.6554660 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access | ||||
Conference Paper Type: | Paper | ||||
Title of Event: | 2013 IEEE Wireless Communications and Networking Conference | ||||
Type of Event: | Conference | ||||
Location of Event: | Shanghai, China | ||||
Date(s) of Event: | 7-10 April 2013 | ||||
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