Portable radio power control device and method using incremental

Telecommunications – Transmitter and receiver at separate stations – With control signal

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

455 89, 455127, H04B 700

Patent

active

057109818

ABSTRACT:
A portable radio having a transmitter power controller connected to the portable radio's receiver and transmitter for controlling the power transmission level of the portable radio, resulting in reduced power consumption by the portable radio and extended battery life. The transmitter power controller estimates the signal strength and quality of the down-link signal by determining a threshold adjustment parameter for the received signal. Thus, this invention eliminates false power adjustment caused by the interfering signals when RSSI (Received Signal Strength Level) is used as a means to estimate transmitter power level. The threshold adjustment parameter is an adjustment parameter used in adjusting the received signal to produce a degraded signal having a predetermined signal quality, and is determined by incrementally adjusting the received signal until the degraded signal is determined to have the predetermined signal quality. The received signal is adjusted in one embodiment by adding noise to the received signal and in another embodiment by adjusting the bias voltage of an RF amplifier and IF amplifier in the receiver. The threshold adjustment parameter corresponds to the signal strength and quality of the received signal, and a look-up table approach is used in determining and adjusting the power transmission level for the portable radio.

REFERENCES:
patent: 3732496 (1973-05-01), Boyer
patent: 4004224 (1977-01-01), Arens et al.
patent: 4165493 (1979-08-01), Harrington
patent: 4220923 (1980-09-01), Pelchat et al.
patent: 4309771 (1982-01-01), Wilkens
patent: 4363127 (1982-12-01), Evans et al.
patent: 4392245 (1983-07-01), Mitama
patent: 4613990 (1986-09-01), Halpern
patent: 4777653 (1988-10-01), Bonnerot et al.
patent: 4811421 (1989-03-01), Havel et al.
patent: 5128965 (1992-07-01), Henriksson
patent: 5129098 (1992-07-01), McGirr
patent: 5241690 (1993-08-01), Larsson et al.
patent: 5278992 (1994-01-01), Su et al.
patent: 5283784 (1994-02-01), Genter
patent: 5293639 (1994-03-01), Wilson et al.
patent: 5333175 (1994-07-01), Ariyavisitakul et al.
patent: 5386589 (1995-01-01), Kanal
patent: 5465399 (1995-11-01), Oberholtzer
patent: 5506869 (1996-04-01), Royer
patent: 5574982 (1996-11-01), Almgreen et al.
patent: 5574984 (1996-11-01), Reed et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Portable radio power control device and method using incremental does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Portable radio power control device and method using incremental, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Portable radio power control device and method using incremental will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-734122

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.