Tomorrow’s technology for today’s network challenges
Cohere ~2x or higher spectrum multiplier effect for 4G & 5G networks
The pioneering work in the Delay Doppler domain enables robust channel estimation and accurate prediction into the future. It alleviates handset feedback requirements by leveraging geometric reciprocity, and reduces computation complexity through concise channel representation. All of these features combine to deliver ~2x or higher spectrum multiplier effect for 4G & 5G networks in both FDD and TDD, growing linearly with the number of antennas on a 1:1 ratio. Cohere’s software-based solution offers significant MU-MIMO benefits with no changes to existing handsets, while reusing existing BS antennas and all available spectrum. The slow changing Delay Doppler channel representation due to its geometric nature, allows functionality disaggregation, enables Cloud RAN, and the foundation to improve cell edge performance via intercell coordination.
Cohere developed the Delay/Doppler model to deliver a Massive Multi-user MIMO without the problems currently surfacing as operators try to deploy 5G. Cohere’s approach provides an accurate channel estimate and prediction, which are the essential ingredients for beam forming, a channel that ages slowly, and is fully independent of modulation. It allows Massive Mu-MIMO on both Time-division duplex (TDD) and Frequency-division duplex (FDD), meaning it can deliver many of the benefits of 5G on 4G networks. Perhaps most importantly, it enables an overall network architecture that is consistent with the evolution of the cloud.