Tuesday, February 22, 2022

Cohere, VMware Claim to Double Bandwidth of any 4G or 5G MIMO

Cohere Technologies markets a Spectrum Multiplier platform that improves the spectral efficiency of any generation (“any G”) mobile network by “as much as two times,” the company says. 


The 3GPP-compliant software Cohere’s Spectrum Multiplier software can be integrated by network equipment suppliers in their radio access gear or as a cloud app, Cohere says. 


Vodafone has tested the Spectrum Multiplier using open radio access network (O-RAN) interfaces and “immediately doubled the capacity of their cell site,” says VMware, which also participated in the test as the supplier of the O-RAN platform. 


Cohere says its software works by  “overcoming  the complexity of accurate channel estimation and prediction,”  reducing roundtrip latency. That is said to be a big issue for multiple input multiple output radio systems, which by definition use arrays of antennae and therefore “create” the task of coordinating the operation of the multiple radios. 


source: Science Direct 


Channel estimation essentially is a process of comparing a transmitted signal with a received signal to determine the channel’s performance parameters (noise, phase shift, attenuation), if I can summarize estimation correctly. 


source: Share Tech Note 


Cohere says its “work in the Delay Doppler domain reduces computation complexity through concise channel representation.” 


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