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Design of a New 4-Dimensional Constellation-Rotation Modulation Method for DVB-NGH
Taejin JUNG Hyoungsoo LIM
IEICE TRANSACTIONS on Communications
Publication Date: 2012/11/01
Online ISSN: 1745-1345
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Terrestrial Wireless Communication/Broadcasting Technologies
constellation-rotation, modulation diversity, fading and erasure channels, single frequency network, mobile broadcasting,
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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.