Title :
A coding and Modulation scheme for HDTV services in DMB-T
Author :
Yang, Zhi-Xing ; Han, Meng ; Pan, Chang-Yong ; Wang, Jun ; Yang, Lin ; Men, Ai-Dong
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
fDate :
3/1/2004 12:00:00 AM
Abstract :
In this paper a channel coding and modulation scheme for providing HDTV broadcasting services is presented, which adopts BICM structure as inner code in connection with 64QAM constellation and OFDM transmission. A new mapping method is designed to maximize the minimum Euclidean distance between signal points divided by feedback bits, thus an iterative algorithm between demodulator and decoder can be performed to acquire performance improvement. Analysis, simulation and laboratory test results have proved that the proposed system has good SNR performance in both AWGN and multipath channels.
Keywords :
AWGN; OFDM modulation; channel coding; decoding; demodulators; high definition television; interleaved codes; iterative methods; multipath channels; quadrature amplitude modulation; television broadcasting; trellis coded modulation; video coding; 64 QAM constellation mapping; AWGN; HDTV broadcasting service; OFDM transmission; SNR performance; TCM; additive white Gaussian noise; bit-interleaved coded modulation; channel coding scheme; decoder; demodulator; digital multimedia/television broadcasting system; feedback bit; high-definition television; iterative algorithm; minimum Euclidean distance maximization; multipath channel; orthogonal frequency division multiplexing; performance improvement; quadrature amplitude modulation; signal-to-noise ratio; trellis-coded modulation; Algorithm design and analysis; Broadcasting; Channel coding; Design methodology; Euclidean distance; HDTV; Modulation coding; OFDM modulation; Signal design; Signal mapping;
Journal_Title :
Broadcasting, IEEE Transactions on
DOI :
10.1109/TBC.2003.822984
