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Novel carrier recovery scheme in multicarrier digital TV system
Author(s) -
Song Kevin,
Jin Jie,
Liu Yi
Publication year - 2014
Publication title -
international journal of communication systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.344
H-Index - 49
eISSN - 1099-1131
pISSN - 1074-5351
DOI - 10.1002/dac.2459
Subject(s) - computer science , fading , carrier frequency offset , carrier recovery , degradation (telecommunications) , frequency offset , synchronization (alternating current) , channel (broadcasting) , orthogonal frequency division multiplexing , electronic engineering , phase noise , offset (computer science) , telecommunications , real time computing , demodulation , engineering , programming language
SUMMARY This work is aimed at researching and analyzing the performance of carrier recovery (CR) with two transmit antennas on a multicarrier digital TV system operating in time‐selective fading channel. It is shown in the paper that CR can correct the performance degradation caused by Doppler effect when the terminal is receiving high resolution digital TV signals in a fast moving environment. To have the ability to cover a large frequency range, the CR system should do a frequency sweep first. Then the coarse and fine frequency offset estimation is introduced. Both the theoretical and simulated results give valuable insight that the CR is able to perform well with a certain amount of channel fading. The phase and noise effect on the CR performance is also studied. The CR system and the working procedure concerning CR and timing recovery are also researched to give a full solution on synchronization. Copyright © 2012 John Wiley & Sons, Ltd.