A Stanford startup’s Wi-Fi radio advancement could maximize wireless capacity
What if you could create a network where you could use all of its spectrum for both uploading and downloading at the same time? A Stanford startup has created a circuit and algorithm that cancels interference, allowing incoming and outgoing signals to utilize the same frequency.
A prototype circuit and algorithm out of a Stanford startup called Kumu demonstrates a way to transfer data both ways at the same frequency, potentially doubling bandwidth. “This was considered impossible to do for the past 100 years,” said Sachin Katti, co-founder of the startup. While the initial research focuses on Wi-Fi, it could be very useful to mobile networking as well. Kumu said that because the circuit generates a new canceling signal each time a new packet is sent, it could cope with constantly changing environments, like those in a mobile network where towers are transmitting at much higher power and signals are constantly bouncing off buildings. This would be a big benefit to mobile companies like Sprint, Softbank and China Mobile, which are among the companies that building LTE networks that send and receive at the same frequency.