Method of minimizing undersirable RF emissions within a TDMA sys

Details Method of minimizing undersirable RF emissions within a TDMA sys Method of minimizing undersirable RF emissions within a TDMA sys

1995-12-19

1998-09-15

Ton, Dang

Multiplex communications

Communication over free space

Repeater

370321, H04J 316

Patent

active

058090177

ABSTRACT:
To minimize the amplitude and spectrum of side bands, beats and harmonics created by changing a transmitter power level between bursts in a GSM TDMA cellular radio communications system, the present invention does not comply with the GSM recommendations by avoiding ramping down to zero power level between time slots. Rather, the transmitter power is ramped between the power value of a previous burst and that of a subsequent burst. In this way, the magnitude or slope of the ramp is minimized and the full time between bursts is available to make power adjustments. A number of embodiments are disclosed.

REFERENCES:
patent: 4955038 (1990-09-01), Lee et al.
patent: 5485300 (1996-01-01), Daley
patent: 5519711 (1996-05-01), Sointula
patent: 5521904 (1996-05-01), Eriksson et al.
patent: 5521925 (1996-05-01), Merakos et al.
patent: 5606740 (1997-02-01), Niratsuka et al.

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