Design of a New 4-Dimensional Constellation-Rotation Modulation Method for DVB-NGH

Taejin JUNG  Hyoungsoo LIM  

Publication
IEICE TRANSACTIONS on Communications   Vol.E95-B   No.11   pp.3625-3628
Publication Date: 2012/11/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E95.B.3625
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Terrestrial Wireless Communication/Broadcasting Technologies
Keyword: 
constellation-rotation,  modulation diversity,  fading and erasure channels,  single frequency network,  mobile broadcasting,  

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Summary: 
In this letter, we propose a new 4-dimensional constellation-rotation (CR) modulation method that achieves diversity gain of 4 in Rayleigh fading channels. The proposed scheme consists of two consecutive CR operations for QAM symbols unlike the conventional 2-dimensional CR method based on only one CR operation. Computer simulation results show that the new method exhibits much better performance than the conventional one in terms of code rate and channel erasure ratio.