For Full-Text PDF, please login, if you are a member of IEICE,|
or go to Pay Per View on menu list, if you are a nonmember of IEICE.
A Unique Word Detection Scheme for High-Speed Satellite Communications
Myung Sup KIM Deock Gil OH
IEICE TRANSACTIONS on Communications
Publication Date: 2000/11/25
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Satellite and Space Communications
unique, word, detection, carrier, phase and satellite,
Full Text: PDF(217KB)>>
We propose a unique word detection scheme having the correction of the phase ambiguity that remains in the output of a carrier recovery circuit for QPSK systems. The performance of the proposed scheme is analyzed by obtaining the probability generating function (PGF) for the output of the detector. The PGF is obtained from the z-transform of the probability density function (PDF) for each matched symbol with the reference symbol and by using the characteristics at this time that the random variables for matched symbols are independent and identically distributed. Then the total PGF for a unique word is obtained from powering the PGF for the individual symbol. From the total PGF, the length of a UW and the threshold value for detection can be obtained with a detection probability defined in a required system specification.