Research Article
An Efficient Coherent Demodulation Algorithm for TETRA Communication System
@INPROCEEDINGS{10.4108/icst.chinacom.2014.256301, author={Bo WANG and Qin ZHANG and Guocheng CHEN and Junfeng WANG and Qizhu SONG}, title={An Efficient Coherent Demodulation Algorithm for TETRA Communication System}, proceedings={9th International Conference on Communications and Networking in China}, publisher={IEEE}, proceedings_a={CHINACOM}, year={2015}, month={1}, keywords={tetra coherent demodulation frequency offset estimation phase offset compensation phase decisions}, doi={10.4108/icst.chinacom.2014.256301} }- Bo WANG
Qin ZHANG
Guocheng CHEN
Junfeng WANG
Qizhu SONG
Year: 2015
An Efficient Coherent Demodulation Algorithm for TETRA Communication System
CHINACOM
IEEE
DOI: 10.4108/icst.chinacom.2014.256301
Abstract
This paper describes an efficient coherent de-modulation algorithm aiming at the receiver in Terrestrial Trunked Radio (TETRA) communication system. The algorithm proposes frequency offset error twice-estimation and sectioned phase offset compensation to achieve the high precision in carrier synchronization. Odd-even decision is then proposed in the algorithm to avoid signal noise ratio (SNR) loss in differential demodulation. The simulation has confirmed that the precision of frequency offset error twice-estimation is better than that of data-aided (DA) estimation and that compared with differential demodulation, the bit error rate (BER) performance of coherent demodulation is much better
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