Abstract
Multi-user multiple-input multiple-output (MU-MIMO) transmission have been expected to improve the spectrum efficiency in wireless communications. This paper presents a universal software radio peripheral (USRP) implementation of mobile terminals for a MU-MIMO testbed. USRP is a low-cost software defined radio terminal. A host PC with general purpose OS controls USRP by using application program interface of USRP hardware driver which is a driver software for USRP. In this paper, frequency stability and timing specifications are represented. Moreover, transmission performance of mobile terminals is evaluated in terms of error vector magnitude.
