Matched filter and signal reception apparatus
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United States of America Patent
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May 14, 2002
Grant Date -
N/A
app pub date -
Feb 24, 1999
filing date -
Feb 25, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A matched filter and signal reception apparatus having a low power consumption and small circuitry size. In the matched filter, an analog input signal is converted to digital data by an analog to digital (A/D) converter, digital multiplication, as a correlation calculation, is executed by a plurality of exclusive-OR circuits, and an addition of outputs of the exclusive-OR circuits is performed. In the digital multiplication, the digital data is multiplied by a spreading code of one bit. The outputs from the exclusive-OR circuits are added for each weight of bits, and the addition output results are weighted and summed together.
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