Communication signal processors and methods

Details Communication signal processors and methods Communication signal processors and methods

1996-12-05

1999-09-28

Tse, Young T.

Pulse or digital communications

Systems using alternating or pulsating current

Angle modulation

375206, 375308, 375329, 329304, 332103, H04L 2718

Patent

active

059600403

ABSTRACT:
A digital signal processor is provided which is compatible with a large variety of modulation processes (e.g., BPSK, QPSK,.pi./4 QPSK, M-ary FSK and M-ary PSK). The processor has a transmit section which can convert input data streams into baseband I and Q signals and a receive section which can recover data streams from input baseband I and Q signals. The transmit section includes a direct I/Q modulator and a common phase modulator and the receive section includes an M-FSK to M-PSK converter and a common phase demodulator. The processor is particularly suited for realization as an application-specific integrated circuit (ASIC) which can be integrated in multiband, multimode transceivers.

REFERENCES:
patent: 4562415 (1985-12-01), McBiles
patent: 5313493 (1994-05-01), Dutta

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