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Timing synchronization method for pilot‐based coherent detection
Author(s) -
Torres J.,
Hernández F.,
Hajj Shehadeh Y. El
Publication year - 2016
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.3078
Subject(s) - computer science , robustness (evolution) , cognitive radio , detector , frequency offset , synchronization (alternating current) , detection theory , offset (computer science) , computer engineering , real time computing , white spaces , algorithm , telecommunications , orthogonal frequency division multiplexing , wireless , biochemistry , chemistry , channel (broadcasting) , gene , programming language
Summary Cognitive radio systems play an important role in the current digital communication systems. With regard to the methods developed, the importance of a coherent detector with matched filters arises, taking into account the optimal properties verified in detection and sensing time. However, the need of perfect timing limits the applicability of this type of system, because of the complexity in hardware implementation. Based upon slope estimation techniques, the present article addresses new methods for tackling this problem. A low complexity system is obtained, and applications can be considered for finding white space in digital television. The results show a good performance with regard to the probability of detection and robustness regarding frequency offset. Copyright © 2015 John Wiley & Sons, Ltd.