Simplified Metrics Calculation for Soft Bit Detection in DVB-T2
RADIOENGINEERING(2014)
Abstract
The constellation rotation and cyclic quadrature component delay (RQD) technique has been adopted in the second generation terrestrial digital video broadcasting (DVB-T2) standard. It improves the system performance under severe propagation conditions, but introduces serious complexity problems in the hardware implementation of the detection process. In this paper, we present a simplified scheme that greatly reduces the complexity of the demapper by simplifying the soft bit metrics computation having a negligible overall system performance loss.
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Key words
Demapper,DVB-T2,OFDM,rotated constellation
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