Digitally convertible radio

Details Digitally convertible radio Digitally convertible radio

2007-04-17

2007-04-17

Tran, Khai (Department: 2611)

Pulse or digital communications

Transmitters

Reexamination Certificate

active

10307624

ABSTRACT:
A forward link transmitter in a sectored cell includes a baseband processor having traditional baseband signal digital processing circuitry in addition to including a digital hybrid matrix (vector and delay compensated transformation module) whose phase and amplitude (vector) and delay may be adjusted to compensate for downstream errors that are introduced and detected by a feedback circuit. Accordingly, the baseband processor, by monitoring an output of an analog hybrid matrix producing modulated and amplified radio frequency (RF) signals just prior to propagation from an antenna, can determine errors produced by the analog circuitry including the analog hybrid matrix and may compensate for the same by introducing an amplitude, phase and delay adjustment (in the digital domain) into output digital waveform signals to compensate for the error introduced downstream to the baseband processor.

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patent: 2004/0203478 (2004-10-01), Scott
patent: 0 877 444 (1998-11-01), None

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