Radio receiver and/or transmitter including a programmable...

Details Radio receiver and/or transmitter including a programmable... Radio receiver and/or transmitter including a programmable...

2004-08-05

2008-07-01

Ghayour, Mohammad H. (Department: 2611)

Pulse or digital communications

Receivers

Interference or noise reduction

C375S259000, C375S295000, C375S316000, C375S235000

Reexamination Certificate

active

07394881

ABSTRACT:
A radio receiver includes a low noise amplifier, a down conversion module, an analog to digital converter, and a digital demodulator. The digital demodulator is operably coupled to convert the digital low IF signals into inbound digital symbols and includes a baseband conversion module, a filtering module, a programmable equalizer, a CORDIC module, and a demodulation module. The programmable equalizer is operably coupled to equalize phase and frequency response of filtered digital baseband signals from the filtering module such that the phase and frequency response of the filtered digital baseband signals approximates phase and frequency response of a square root raised cosine filter to produce adjusted digital baseband signals. The CORDIC module is operably coupled to produce phase and magnitude information from the adjusted digital baseband signals. The demodulation module is operably coupled to produce the inbound digital symbols from the phase and magnitude information.

REFERENCES:
patent: 2002/0126748 (2002-09-01), Rafie et al.
patent: 2003/0031275 (2003-02-01), Min et al.
patent: 2003/0058959 (2003-03-01), Rafie et al.

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