Hybrid analog/digital method and apparatus for controlling the t

Details Hybrid analog/digital method and apparatus for controlling the t Hybrid analog/digital method and apparatus for controlling the t

1996-04-23

1998-01-13

Tse, Young T.

Pulse or digital communications

Transmitters

Antinoise or distortion

375296, 375308, 455 72, 455127, 370535, H04L 2549, H04L 2720

Patent

active

057086818

ABSTRACT:
A technique for controlling the transmission power level of a transmitter, particularly in a wireless personal communication system, is disclosed. This technique assists in the prevention of interference between transceivers from degrading the quality of transmissions. Transmission power level is controlled through a hybrid circuit containing both digital and analog electronics. The transmission power level is set by controlling both the amount by which a data stream is compressed and the gain of an analog transmit power amplifier. This approach allows adequate control over the transmission power level; it avoids the need for utilizing excessively wide data paths for the digital transmit signals (which may compromise portable terminal battery consumption), or utilizing expensive, hard-to-calibrate analog electronics.

REFERENCES:
patent: 4412337 (1983-10-01), Bickley et al.
patent: 5129098 (1992-07-01), McGirr et al.
patent: 5159283 (1992-10-01), Jensen
patent: 5193223 (1993-03-01), Walczak et al.
patent: 5293407 (1994-03-01), Shibata
patent: 5369789 (1994-11-01), Kosugi et al.
patent: 5383223 (1995-01-01), Inokuchi
patent: 5507017 (1996-04-01), Whitmarsh et al.

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