Real-world tests reveal that wireless signal capacity can be doubled

MIT Technology Review : In 2012, researchers from Stanford University developed a device that enables a radio receiver to filter out interference from outgoing radio signals. It thus allows the radio to transmit and receive simultaneously. The researchers created the startup Kumu Networks and, in partnership with Deutsche Telekom and an unnamed US wireless carrier, recently tested the device in real-world cellular networks. Both tests showed that the capacity doubling was potentially viable for commercialization. The company is currently working to install the technology at small, mobile base stations, which are used for improving coverage in busy locations such as stadiums. Normally such stations are hardwired into the wireless network, but Kumu’s system will be cable-free because of the doubled capacity and ability to simultaneously transmit and receive.