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Simplified Rotated Constellation Demapper for Second Generation Terrestrial Digital Video Broadcasting

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5 Author(s)
Perez-Calderon, D. ; Dept. of Electron. Eng., Univ. of Seville, Seville, Spain ; Baena-Lecuyer, V. ; Oria, A.C. ; Lopez, P.
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The constellation rotation and cyclic Q-delay technique has been adopted in second generation terrestrial digital video broadcasting to provide signal space diversity, improving the system performance under severe multipath propagation environments. The main drawback of this technique is the hardware complexity introduced in the demapping process compared to non-rotated constellations. In this brief, we present a simplified demapper that reduces up to 78% the number of required operations with almost no performance degradation compared to the results of the ideal max-log demapper.

Published in:

Broadcasting, IEEE Transactions on  (Volume:59 ,  Issue: 1 )

Date of Publication:

March 2013

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