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On the BER Performance of Hierarchical M-QAM Constellations with Diversity and Imperfect Channel Estimation

Souto, N.S. ; Cercas, F. ; Silva, J. C.

IEEE Transactions on Communications Vol. 55, Nº 10, pp. 1852 - 1856, October, 2007.

ISSN (print): 0090-6778
ISSN (online): 0090-6778

Journal Impact Factor: 2,070 (in 2008)

Digital Object Identifier: 10.1109/TCOMM.2007.906367

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Abstract
The analytical bit error rate of hierarchical quadrature
amplitude modulation formats, which include uniform and
nonuniform constellations, over flat Rayleigh fading environments
is studied in this paper. The analysis takes into account the effect
of imperfect channel estimation and considers diversity reception
with both independent identically and nonidentically distributed
channels, employing maximal ratio combining.