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New 4-Dimensional Constellation-Rotation Modulation Method for DVB-NGH  

Kim, Jun-Ho (전남대학교 전자컴퓨터공학과)
Kim, Ho-Jun (전남대학교 전자컴퓨터공학과)
Jung, Tae-Jin (전남대학교 전자컴퓨터공학과)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.35, no.11A, 2010 , pp. 1073-1077 More about this Journal
Abstract
This paper proposes a new 4-dimensional(4D) constellation-rotation(CR) method which obtains diversity gain of 4 under Rayleigh fading channels. The proposed scheme uses two consecutive CR operations for the constellation of QAM signals unlike a conventional 2-dimensional(2D) CR method using only one CR operation. The computer simulation results show that the new method outperforms the conventional one even more as both the channel code rate and the erasure ratio increase. In a point of system flexibility, the proposed scheme has a great advantage since the conventional 2D CR scheme can be simply implemented by only changing rotation angle values used in the proposed scheme.
Keywords
Constellation-Rotation; Diversity; Erasure Fading; SFN; DVB-NGH;
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  • Reference
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