DocumentCode :
781296
Title :
The Minimum Likelihood--A New Concept for Bit Synchronization
Author :
Chiu, Jung-Hui ; Lee, Lin-shan
Author_Institution :
National Taiwan Institute of Technology, Taipei, China
Volume :
35
Issue :
5
fYear :
1987
fDate :
5/1/1987 12:00:00 AM
Firstpage :
545
Lastpage :
549
Abstract :
A new bit synchronization concept based on the "minimum likelihood" criterion instead of the conventional "maximum likelihood" concept is developed. The minimum likelihood situation is even easier to reach than the maximum likelihood because the derivative of the log likelihood function becomes identically zero there. Minimum likelihood implies "least likely" for synchronization (the worst case synchronization error) or an "orthogonal" timing condition which simply means that the locally generated clock is synchronized correctly, but with a delay of a half bit period. The structure and performance of the minimum likelihood bit synchronizer are discussed in detail in this paper. The results indicate that the minimum likelihood bit synchronizer has a much simpler structure, but with performance very close to the optimal maximum likelihood synchronizer.
Keywords :
Digital communications; Synchronization; Clocks; Delay; Digital communication; Error correction; Phase locked loops; Pulse shaping methods; Shape; Synchronization; Timing; Tracking loops;
fLanguage :
English
Journal_Title :
Communications, IEEE Transactions on
Publisher :
ieee
ISSN :
0090-6778
Type :
jour
DOI :
10.1109/TCOM.1987.1096812
Filename :
1096812
Link To Document :
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