Finding the Perfect Blend of Full and Half Duplex for Future Cell Phone Networks
- Amy Nordrum for IEEE Spectrum May 26th, 2016
- Source: http://spectrum.ieee.org/tech-talk/telecom/wireless/finding-the-perfect-blend-of-full-and-hafl-duplex-for-future-cell-phone-networks
The sales pitch for full duplex is a powerful one: these new radios could instantly double the capacity of today’s wireless networks by transmitting and receiving signals on the same frequency, at the same time. That promise has made network engineers eager to deploy it in cellular base stations and mobile devices ever since the technology began to pick up steam around 2007.
But in reality, transmitting and receiving messages at the same time on the same frequency has an unfortunate side effect. It causes twice as much interference as performing each function in turn or on separate bands.