Technique for determining signal dispersion characteristics...

Details Technique for determining signal dispersion characteristics... Technique for determining signal dispersion characteristics...

H - Electricity

04

N

350/1

H04N 17/00 (2006.01) H04L 25/03 (2006.01) H04L 27/233 (2006.01) H04L 27/38 (2006.01) H04N 5/21 (2006.01) H04N 7/015 (2006.01)

Patent

CA 2027387

Abstract of the Disclosure The present invention covers the notion of determining signal dispersion characteristics, such as amplitude, phase and delay, by transmitting training sequences. More specifically, each sequence comprises a plurality of predetermined symbols and is transmitted two or more times. Detection of each training sequence is provided by a correlator at the receiver. This detection creates a signal peak for each training sequence at the output of the correlator. Between the peaks, a "quiet zone" is created which permits signal dispersion in this zone to be characterized with respect to amplitude, phase and delay. Two different quiet zones are utilized toresolve ambiguities which arise in determining the aforesaid signal dispersion characteristics. -18-

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