Correlation circuit for spread spectrum communication, demodulation circuit and reception apparatus
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United States of America Patent
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Nov 11, 2003
Grant Date -
N/A
app pub date -
Feb 24, 2000
filing date -
Feb 24, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In a conventional correlation circuit for spread spectrum communication, when a sliding correlator is used, much time is required. When a matched filter is used, a problem is that a circuit scale and power consumption are increased. In the present invention, however, there is provided a correlation circuit for spread spectrum communication which minimizes the number of constituting elements, and can reduce the power consumption. In the correlation circuit for spread spectrum communication of the present invention, a spread spectrum received signal is A/D converted and accumulated in a data memory unit by a symbol unit, data rate is converted, and a high-rate MF performs a product sum operation processing at a high rate so that a correlation output is obtained.
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