2 ms·
my laptop can receive packets as quiet as -90 dBm For comparison, GPS signals in good conditions are around -125dBm, and many receivers can go down to -165dBm,
by userbinator 3y ago
my laptop can receive packets as quiet as -90 dBm
For comparison, GPS signals in good conditions are around -125dBm, and many receivers can go down to -165dBm, so WiFi signals are still much stronger in comparison.
- mikewarot 3y agoThat's because GPS signals are only encoding 50 bits/second of data, and spreading it across 10 Mhz of bandwidth... with a processing gain of about 43 dB.[1] [1] https://www.ieee.li/pdf/viewgraphs/gnss_fundamentals.pdf https://www.ieee.li/pdf/viewgraphs/gnss_fundamentals.pdf See slides 37 and 38