Pulse or digital communications – Receivers – Particular pulse demodulator or detector
Patent
1993-08-17
1995-08-01
Chin, Stephen
Pulse or digital communications
Receivers
Particular pulse demodulator or detector
4552381, 340466, H04L 2706
Patent
active
054385954
ABSTRACT:
In a digital wireless communication system communicating between a mobile unit and a stationary unit, a received digitally encoded signal is sampled to produce a first sampled digital signal having a plurality of symbols. The short term energy over a plurality of a contiguous symbols is measured. The short term energy symbol over a first plurality of a contiguous short term energy points is measured. The short term energy average over a second plurality of contiguous short term energy points is measured. The second plurality of contiguous short term energy points is spaced apart from the first plurality of contiguous short term energy points. The difference between the first short term energy average and the second short term energy average is calculated to derive an estimate of the speed of the mobile unit relative to the base unit.
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Cheng Jong-Keung
Subramanian Ravi
Bocure Tesfaldet
Chin Stephen
Teknekron Communication Systems, Inc.
Yin Ronald L.
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