Design and implementation of a communications system for streaming real-time voice using SDR technology in USRP E110 and N210 devices

The SDR devices along with GNU Radio Software tool have taken the design of radio communications systems to a new level. This technology uses blocks-processing software that substitutes everything that is far implemented at the physical layer hardware. By designing a software radio system, this paper shows the implementation of a real time voice Tx and Rx using GNU Radio as Software, and some modulation schemes through USRP E110 and N210 devices.