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Importance of Spectrum Analysis for Wi-Fi Design
Andrew CampbellEkahau Wi-Fi Tools Sales [email protected]@wifiandrew
FootballWi-Fi Design
Courtesy of CBS Sports
What does Wi-Fi have to do with Football?
FootballWi-Fi Design
Courtesy of USA Today Sports
If you don’t know where the defense is, then you don’t know what receiver is
open.
Without Spectrum Analysis, interference and spectrum utilization is
unknown.
FootballWi-Fi Design
Courtesy of Fox Sports
Number of Non-Overlapping Channels Number of Receivers
1 6
11
36 165
120
64 153
40140
161 48 157 60
112 149124
132 44 108 52
104 100136
116
56
128
FootballWi-Fi Design
Courtesy of Washington Post
Amount of Contention (interference, noise, utilization…)
Number of Defenders
FootballWi-Fi Design
Courtesy of Icon Sports Media
Signal-to-Noise Ratio (SNR) Receiver-to-Defender Height Ratio
SNR (dB)
Received Signal
Strength
Noise Floor
Pow
er (
dBm
)
Time (secs)
FootballWi-Fi Design
Courtesy of NY Daily News
Type of Interferer(Consistent High Power, Intermittent,
Wideband, Frequency Hopping?)
Defender Ability
FootballWi-Fi Design
Courtesy of NFL
Interference Mitigation Blocking
Courtesy of Competence Call Center
USB Headset vs. Bluetooth
FootballWi-Fi Design
Courtesy of Fox Sports
Timing of Interference Route Timing
FootballWi-Fi Design
Courtesy of FanSided
Location of Interference Location of Open Receivers
FootballWi-Fi DesignWithout SA, interference is unknown
Number of Non-Overlapping Channels
Amount of Contention
Signal-to-Noise Ratio (SNR)
Type of Interferer
Interference Mitigation
Timing of Interference
Location of Interference
Can’t see defense, don’t know receiver is open
Number of Receivers
Number of Defenders
Receiver-to-Defender Height Ratio
Defender Ability
Blocking
Route Timing
Location of Open Receivers
Why Spectrum Analysis Is Important For Design...
Identify & Mitigate InterferenceOptimize Channel Plan to Avoid Congested AreasCan you use 2.4 GHz?Can you use DFS Channels?
ekahau.com/wifidesign
