WestNet Learning · Physical-Layer Architecture
A-OFDM Abdou-OFDM
Sub-millisecond latency. Through-wall coverage. No cyclic prefix, no preamble, no scheduler. A-OFDM is a clean-sheet wireless physical layer built by a Calgary network operator — a working architecture with named mechanisms, worked numbers, and a pending patent, not a firmware tweak on 802.11.
< 1 msAir interface
400×Control PSD
0%Cyclic prefix
26 dBThrough walls
The five mechanisms
CICOne-tap time-reversal: the transmitter pre-conjugates for the room’s dominant echo, so multipath adds instead of smears.
50 kHz controlA narrowband burst decodes at a far lower noise floor — the link-budget edge that carries through concrete.
Quiet RampTiming recovered from the signal’s own structure. No per-packet training preamble.
FingerprintMeasure the channel geometry once; reuse it while the room holds still.
Grant-free MACDevices transmit when ready; the receiver separates them by channel signature.
Abdou A. Traya
Founder of WestNet in Calgary, he spent twenty-five years running real wireless — from the city’s first community Wi-Fi network to one of the world’s earliest wide-area commercial Wi-Fi deployments, 17,500 subscribers on a self-funded network. A-OFDM is the physical layer that operating experience produced.
Also from WestNet PublicationsThe Actual History of Wi-Fi · The Home Wi-Fi Handbook
UPC-A 731985456673
ISBN 979-8-172863-98-1
WestNet LearningPhysical-Layer Architecture
A-OFDM
Abdou-Orthogonal Frequency-Division Multiplexing
A clean-sheet Calgary physical layer for sub-millisecond, through-wall wireless.
CIC50 kHz PunchQuiet RampGrant-Free
Abdou A. TrayaWestNet Communications, Calgary
< 1 msAir interface
400×Control PSD
0%Cyclic prefix
WestNet Publications
Co-published with WestNet Humanitarian Services
UN Supplier · westnet.ngo