Method and apparatus for frequency division multiplexing

Details Method and apparatus for frequency division multiplexing Method and apparatus for frequency division multiplexing

2007-09-25

2007-09-25

Ghayour, Mohammed (Department: 2611)

Pulse or digital communications

Transmitters

Angle modulation

C375S239000, C375S279000, C375S302000, C375S329000

Reexamination Certificate

active

10778699

ABSTRACT:
A radio transmitter and receiver arrangement includes a transmitter and a receiver. The transmitter generates an electromagnetic carrier that varies in frequency throughout a channel interval, and modulates the carrier with an information signal during the channel interval, whereby the carrier is modulated both in frequency and in accordance with the information signal during the channel interval. The receiver receives the carrier that is modulated both in frequency and in accordance with the information signal, generates a detection signal that varies in frequency throughout the channel interval, and mixes the carrier and the detection signal to recover the information signal.

REFERENCES:
patent: 3548341 (1970-12-01), Berry
patent: 3898589 (1975-08-01), Tustison
patent: 4312072 (1982-01-01), Vogel
patent: 5561689 (1996-10-01), Fleek et al.
patent: 5875212 (1999-02-01), Fleek et al.
patent: 6470055 (2002-10-01), Feher
patent: 6611493 (2003-08-01), Miyashita et al.

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