Automatic gain control and low power start-of-packet detection for a wireless LAN receiver
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United States of America Patent
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Dec 19, 2006
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N/A
app pub date -
Mar 8, 2002
filing date -
Mar 19, 2001
priority date (Note) -
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Abstract
A digital AGC system for burst operation, particularly suited for receiving packets in a wireless local area network. One embodiment includes a log detector that provides a signal strength measure, called the received signal strength indication (RSSI) over a wide dynamic range. The AGC system includes estimating the power in a received signal by averaging the log of the signal power. The Start of Packet detection avoids using the radio receiver's main analog to digital converters to preserve power.
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