Spectrum sharing for MTC devices in LTE

In this paper, we present practical realization of spectrum sharing scheme for machine-type communications in LTE. We demonstrate that the proposed scheme supports dynamic spectrum access for large set of low-data rate transmitters. Unlike classical random-access type communications, the new scheme avoids the need for signaling procedures that are associated with channel reservation. Moreover, compressive-sensing based algorithm is able to identify transmitting nodes and simultaneously decode multi-user data. The proposed algorithm has been implemented on software-defined radio based TD-LTE testbed.