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Line 6: RSSI is usually invisible to a user of a receiving device. However, because signal strength can vary greatly and affect functionality in [[Wireless LAN\|wireless networking]], [[IEEE 802.11]] devices often make the measurement available to users. RSSI is often derived in the [[intermediate frequency]] (IF) stage before the IF amplifier. In [[Direct-conversion receiver\|zero-IF systems]], it is derived in the baseband signal chain, before the baseband amplifier. RSSI output is often a DC analog level. It can also be sampled by an internal [[analog-to-digital converter]] (ADC) and the resulting ~~codes~~code is available directly or via peripheral or internal processor bus. == In 802.11 implementations ==

Received signal strength indicator: Difference between revisions