Pulse or digital communications – Receivers – Particular pulse demodulator or detector
Patent
1993-08-17
1996-02-13
Chin, Stephen
Pulse or digital communications
Receivers
Particular pulse demodulator or detector
375349, 4551823, H03D 300, H04L 2722
Patent
active
054917263
ABSTRACT:
A digital wireless communication system operates between a first unit and a second unit. The received digitally encoded signal is sampled to produce a first sampled digital signal. A first bank of match filters with each match filter having a different frequency range is used to pass the first sampled digital signal therethrough. The output of the first bank of match filters having the largest amplitude is selected along with the match filter which produced the largest amplitude output. The digitally encoded signal having this "coarse" frequency range is then passed through a second bank of match filters. Each of the match filters has a fine frequency different from one another. The output of the second bank of match filters is produced and the output having the largest amplitude is selected. In addition, the filter producing the largest amplitude from the second bank of match filters is also selected.
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Cheng Jong-Keung
Lin Nan-Sheng
Touriguian Mihran H.
Chin Stephen
May Timothy J.
Sharp Corporation
TCSI Corp.
Yin Ronald L.
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