How Does Wireless Lighting Work?

The backbone of the industry-leading wireless lighting solution is LumenRadio CRMX. CRMX is a system created by LumenRadio that exists to help maximise wireless performance without any user intervention.

Cognitive Radio MultipleXer

CRMX stands for Cognitive Radio MultipleXer - A system that scans the existing radio spectrum and dynamically adapts the radio to the frequency of the surrounding environment. This eliminates interference and maximises the performance of the radio systems in the area.

Wireless Interference

Many consumer technologies including CRMX exist on the 2.4 GHz band, such as WiFi, Bluetooth and ZigBee (used to communicate between smart home devices). These radios all live on the same frequencies as regulations require unlicensed radios to be within the same band of the radio spectrum.

Can We Improve Wireless Performance?

Due to the incredible amount of wireless signals being transmitted, it would be grossly impractical to attempt to disable other radios as a means to increase performance. CRMX is a smart radio that aims to increase performance through continuously scanning the 2.4 GHz spectrum, dynamically adapting through frequency hopping on crowded parts of the band.

Practically you could increase performance through separating CRMX equipment from other radios (WiFi, mobile and smart home devices) to increase performance. This could be achieved through situating aerials WiFi aerials away from the CRMX transmitter.

Can DMX Signals Be Prone To Interference?

CRMX transmitters employ DMX fidelity and error correction. This ensures that ‘DMX frames retain the exact same content and properties, including timing parameters, throughout the transmission process’ (LumenRadio, 2019). This is important as misbehaving fixtures can create serious issues if wireless signals are not correctly transmitted. ‘The error correction mechanism recreates lost, or corrupted, radio packets thus helping to ensure that the signal [has] perfect fidelity even under bad radio conditions.’

You could have lights such as RGB LED’s and moving heads that require the full bits of data to execute their effect. CRMX will assess that all bits of data within the packet arriving at the receiver is complete, ensuring that the data isn't fragmented or corrupted.

Can Spread Out Lights Lead To Latency Issues?

CRMX uses synchronisation that guarantees the uniformity of delivery despite the receivers being placed at various locations and potentially within the presence of other radio systems.

Latency control is imperative to ensure that data arrives at multiple receivers at the exact same time. Without this synchronisation, lighting effects involving multiple fixtures and receivers could result in a variation between devices, becoming noticeable to the human eye. CRMX uses a ‘low latency of only 5 milliseconds’, making it impossible for the human eye to detect the difference of a signal delivered CRMX system and a data cable.

LumenRadio. (2019). FAQ | LumenRadio. [online] Available at: [Accessed 22 Jan. 2019].

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