Communication system, signal pre-processing apparatus and signal receiving apparatus thereof
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United States of America Patent
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Jun 10, 2008
Grant Date -
Oct 28, 2004
app pub date -
Apr 20, 2004
filing date -
Apr 24, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention provides a communication system, signal pre-processing apparatus and signal receiving apparatus thereof. The signal pre-processing apparatus is used for pre-processing signals before they are transmitted by a plurality of antennas. The apparatus includes a serial-to-parallel converter, L compensation processors and L beam formation processors. First of all, the serial-to-parallel converter converts a digital signal into N divided signals. Each of the compensation processors pre-compensates the N divided signals and outputs a compensated signal. Each of the beam formation processors intensifies the compensated signal and outputs an intensified signal. Each of the antennas combines L intensified signals into a particular signal, and meanwhile, upconverts the particular signal into a RF (radio-frequency) signal for transmission.
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