Receiver gain control for radio telephone system

Details Receiver gain control for radio telephone system Receiver gain control for radio telephone system

1990-06-26

1993-10-05

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

4552391, 379 58, 375 98, 370113, H02K 4704, H04J 300

Patent

active

052512169

ABSTRACT:
A receiver for a mobile telephone system operating in a Time Division Multiple Access (TDMA) system, includes a gain control circuit coupled to receive an input signal, the circuit being switchable under the control of digital control signals between three gain or attenuation levels. An equalizer is coupled to receive the output signal from the gain control circuit. A signal strength unit determines the value of the received signals and provides the digital control signals so as to set the gain or attenuation level constant for a time slot of the TDMA system. The signal strength unit records the determined signal value so as to set the level of said gain control circuit prior to a predetermined time slot based upon measurements made during a preceding time period.

REFERENCES:
patent: 4330859 (1982-05-01), Takada
patent: 4577310 (1986-03-01), Korsky et al.
patent: 4635103 (1987-01-01), Steckler et al.
patent: 4656630 (1987-04-01), Miyo
patent: 4930126 (1990-05-01), Kazecki et al.
patent: 5029162 (1991-07-01), Epps
patent: 5042082 (1991-08-01), Dahlin
Patent Abstracts of Japan, vol. 10, No. 145 (E-407) (2202) 28 May 1986 and JP-A-61 005 610 (Mitsubishi) 11 Jan. 1986.
37th IEEE Vehic. Techn. Conference 1987 (NY) pp. 293-299 Radio Test Performance of a Narrowband TDMA System (Stjernvall et al.) p. 294, line 14-line 18.

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