As 5G radio system research is rapidly developing and is attracting significant global interest, a team of researchers at Tampere University of Technology (TUT), led by Prof. Mikko Valkama,has been developing and building an advanced radio transceiver concept for improving the spectral efficiency of future 5G net-works. 5G networks are aiming at very large data rates, very high capacity, very low latency, and very fast response time.