Title
Optimized Rotations For Ldpc-Coded Mpsk Constellations With Signal Space Diversity
Abstract
For multi-level modulation methods, rotation of the signal constellation together with in-phase and quadrature phase channel interleaving (signal space diversity) are known to provide good performance gains over fading channels. This paper studies the extension of such schemes with a low density parity check (LDPC) code. It is shown that for both coded and uncoded Gray-mapped MPSK modulation formats with signal space diversity on a Rayleigh fading channel, a well-considered choice of the rotation angle may lead to a significant gain over the conventional unrotated constellation. However, the optimum rotation angle for the coded scheme may be different from the corresponding optimization angle of the uncoded scheme.
Year
DOI
Venue
2007
10.1109/WCNC.2007.130
2007 IEEE WIRELESS COMMUNICATIONS & NETWORKING CONFERENCE, VOLS 1-9
Keywords
Field
DocType
fading,fading channel,low density parity check,constellation diagram,awgn,space technology,ldpc code,wireless communication,euclidean distance,phase shift keying
Antenna diversity,Rayleigh fading,Telecommunications,Low-density parity-check code,Fading,Computer science,Algorithm,Modulation,Real-time computing,Constellation diagram,Interleaving,Phase-shift keying
Conference
ISSN
Citations 
PageRank 
1525-3511
8
0.65
References 
Authors
9
4
Name
Order
Citations
PageRank
Nauman F. Kiyani1557.58
Umar H. Rizvi2384.18
Jos H. Weber325751.13
Gerard J. M. Janssen47319.73