Method and apparatus for sub sample-per-symbol demodulator...

Details Method and apparatus for sub sample-per-symbol demodulator... Method and apparatus for sub sample-per-symbol demodulator...

2007-04-17

2007-04-17

Kinkead, Arnold (Department: 2817)

Modulators

Frequency shift keying modulator or minimum shift keying...

C332S103000, C375S265000, C375S348000

Reexamination Certificate

active

10388510

ABSTRACT:
An apparatus and method for transmitting and receiving a communication signal includes selecting a pulse shape for a continuous phase modulated waveform, encoding specific information into the waveform to form a communication signal and transmitting the communication signal. The system receives the transmitted communication signal and samples the received signal at a specified rate, the sample rate being less than the symbol rate, enabling reconstructing the waveform and extracting encoded information at sub sample per symbol rates, thereby reducing the reliance on high speed wideband analog to digital converters (ADC) for high speed applications.

REFERENCES:
patent: 4853944 (1989-08-01), Lo et al.
patent: 6690739 (2004-02-01), Mui
patent: 6834035 (2004-12-01), Marukawa et al.
patent: 2005/0075672 (2005-04-01), Rottenberg
Cadzow “Discrete-Time Systems” Prentice-Hall 1973 pp. 291 and 292.

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