Performance Evaluation of Resource Allocation Scheme Based on Hierarchical Constellation in Cellular Networks

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Hierarchical constellations offer a different property of robustness to the multiple bits that construct a symbol according to channel errors. We apply the characteristics of hierarchical constellations to a multiuser cellular system that has limited modulation levels, in order to improve cell capacity. We propose an adaptive resource allocation scheme based on the hierarchical constellation in which a symbol is shared by multiple users and each bit in a symbol is allocated adaptively according to the channel condition of each user. The numerical results show that the proposed resource allocation scheme provides mobile users with higher modulation levels so that the cell capacity is improved.
Publisher
IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG
Issue Date
2010-05
Language
English
Article Type
Article
Citation

IEICE TRANSACTIONS ON COMMUNICATIONS, v.E93B, no.5, pp.1289 - 1292

ISSN
0916-8516
DOI
10.1587/transcom.E93.B.1289
URI
http://hdl.handle.net/10203/101095
Appears in Collection
EE-Journal Papers(저널논문)
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