06016124 is referenced by 38 patents and cites 5 patents.

A plurality of bit stream formatters formats and codes the digital information signals that are to be transmitted. A symbol generator generates I and Q symbols from the formatted information signals. These symbols are input to the beamforming matrix that is connected directly to the symbol generators. The beamforming matrix generates baseband beam signals from the I and Q symbols. Baseband, pulse-shaping, low-pass filters are connected to the beamforming matrix. The low-pass filters each generate an antenna feed signal from each of the baseband beam signals.

Title
Digital beamforming in a satellite communication system
Application Number
9/55374
Publication Number
6016124
Application Date
April 6, 1998
Publication Date
January 18, 2000
Inventor
Jue Chang
Plano
TX, US
Wing Lo
Plano
TX, US
Agent
John D Crane
Assignee
Nortel Networks Corporation
TX, US
IPC
H01Q 3/26
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