07206355 is referenced by 12 patents and cites 10 patents.

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.

Title
Digitally convertible radio
Application Number
10/307624
Publication Number
7206355 (B2)
Application Date
December 2, 2002
Publication Date
April 17, 2007
Inventor
Matthew Conrod
Ottawa
CA
Mihai Parvan
Gloucester
CA
Marthinus W Da Silveira
Nepean
CA
Neil N McGowan
Stittsville
CA
Agent
James A Harrison
Garlick Harrison & Markison
Assignee
Nortel Networks
CA
IPC
H04L 27/00
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