802.11 Co-existence: Industrial Wireless Protocols
Here you will find a list of different types of wireless protocols that are implemented across all the factories and warehouses I manage. I have created this index of each… Continue Reading
Browsing Category: Spectrum Stuff
How to install GNU Radio and PyBombs on Ubuntu
How to setup GNU Radio, and the 802.15.4 library by bastilbl via pybombs. PyBombs is a package manager for GNU Radio helping reduce complexity with dependencies.
802.11 Co-existence: Trusted Wireless 2.0
Trusted Wireless 2.0 is a proprietary protocol found in industrial environments based on the WirelessHART standard. In the ISM 2.4GHz band, Trusted Wireless 2.0 uses frequency hopping spread spectrum across… Continue Reading
802.11 Co-existence: WirelessHART
WirelessHART is based on the 802.15.4 standard and forms a flat mesh network where each client acts as a source and a repeater. Alternative routes are set up during the… Continue Reading
How to: Calculating antenna received power (Friis Transmission Equation)
demystifying the Friis Transmission Equation
802.11 Co-existence: 802.15.4 (Zigbee, 6LowPAN, Wireless Hart, MiWi, ISA 100.11a)
802.15.4 is a protocol defined by the IEEE standards body. To have a standard approved by the IEEE, the standards committee must provide a document outlining coexistence assurances for other… Continue Reading
802.11 Co-existence: Bluetooth 4.1, 5.x
Bluetooth 5.x consists of three main modes. Those are Low Energy (LE), Basic Rate or Enhanced Data Rate (BR / EDR), and Alternative MAC/PHY (AMP). Both LE and BR /… Continue Reading
Using RX-SOP to combat CCI
RX-SOP changes the threshold of an access point at which it demodulates and decodes a frame, which effectively raises the noise floor. It’s used in environments where CCI is a… Continue Reading
Is a guard interval just dead air?
The purpose of a guard interval is to reduce data corruption caused by multipath. Multipath occurs when a transmission reaches an antenna using multiple paths. This is often caused by… Continue Reading
What is Orthogonal signaling
Orthogonality relates to right angles. If you transmit two signals on the same frequency, they will interfere with each other unless they have a phase difference of 90º. Orthogonal Frequency… Continue Reading