Difference between revisions of "WiFi abbreviations"
From Teknologisk videncenter
m |
m (→Abbreviations) |
||
| Line 18: | Line 18: | ||
|- | |- | ||
| ISI || Intersymbol Interference || Signal misinterpreted by receiver due to multipath signals out of phase | | ISI || Intersymbol Interference || Signal misinterpreted by receiver due to multipath signals out of phase | ||
| + | |- | ||
| + | | RSSI || Received Signal Strength Indicator || power level received by the receiver radio in dbm | ||
| + | |- | ||
| + | | mW || Milli Watt || 0,001 Watt | ||
| + | |- | ||
| + | | dBm || Decibell relative to 1 mW of power. | ||
| + | |- | ||
| + | | dBi || Decibell isotropic || Antenna gain compared to a theoretical isotropic antenna | ||
| + | |- | ||
| + | | dBd || Decibell dipole || Antenna gain compared to a theoretical isotropic antenna. Add 2,14 dB to get dBi | ||
|- | |- | ||
|} | |} | ||
[[Category:WiFi]] | [[Category:WiFi]] | ||
Revision as of 12:27, 19 February 2014
Abbreviations
| Abb. | meaning | Notes |
|---|---|---|
| ASK | Amplitude Shift Keying | Keying 0's and 1's by altering the radio carriers amplitude |
| FSK | Frequency Shift Keying | Keying 0's and 1's by altering the radio carriers frequency |
| PSK | Phase Shift Keying | Keying 0's and 1's by altering the radio carriers phase |
| MPSK | Multiple Phase Shift Keying | Keying more than one bit at a time by using four or more phases |
| RF | Radio Frequency | Rate of oscillation in the range of around 3 kHz to 300 GHz corresponding to radio waves |
| FSPL | Free Space Path Loss | Loss of amplitude of the signal in free space over distance |
| ISI | Intersymbol Interference | Signal misinterpreted by receiver due to multipath signals out of phase |
| RSSI | Received Signal Strength Indicator | power level received by the receiver radio in dbm |
| mW | Milli Watt | 0,001 Watt |
| dBm | Decibell relative to 1 mW of power. | |
| dBi | Decibell isotropic | Antenna gain compared to a theoretical isotropic antenna |
| dBd | Decibell dipole | Antenna gain compared to a theoretical isotropic antenna. Add 2,14 dB to get dBi |