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J. KIMS Technol > Volume 14(6); 2011 > Article
Journal of the Korea Institute of Military Science and Technology 2011;14(6):1043-1048.
DOI: https://doi.org/10.9766/KIMST.2011.14.6.1043   
A Study on a New Carrier Recovery Algorithm for Coherent Burst-mode Communication Systems
Sung-Bok Park
동기식 버스트 통신시스템 적용을 위한 새로운 반송파 동기 기법에 관한 연구
In this paper, a newsynchronization technique applied to burst-mode communication is proposed. A synchronization technique is to estimate carrier frequency and phase offsets in a noisy channel environment. A fundamental problem for estimating the parameters(carrier phase and frequency offsets) in burst-mode transmission is that the ways of pursuing estimation accuracy and transmission efficiency are always trade-off. To solve this problem, a new carrier recovery technique is proposed to improve the transmission efficiency with reliable performance especially at low S/N. In the proposed technique, the synchronization parameters are first estimated based on a data-aided feed-forward estimation scheme. Then, a phase tracker using decision-directed DPLL estimates the phase offset for the data portion of the burst data. From simulation results, it shows fast synchronization with shorter preamble maintaining reasonable BER performance at low S/N.
Key Words: Carrier Recovery, MLE, DPLL, Burst-mode Communication


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