Design and Implementation of a Portable Software Radio

Abstract

-We describe the design and development of a portable software radio prototype device built primarily using commercial off-the-shelf components and open-source software. The device components include a generalpurpose processor (GPP) on a small-form-factor motherboard, radio hardware, touchscreen and LCD, audio microphone and speaker, and an internal battery enabling hours of mobile operation. This device demonstrates that a GPP-based software radio can be implemented in a portable-form-factor using current technology. We describe the design and selection of hardware components, identification and modification of the operating system, and installation of the selected radio software. We discuss trade-offs in the selection of hardware and software, decisions that proved to be stable throughout the lifetime of the project, issues that arose, and lessons learned along the way.

Research on time synchronization technology of virtual radio

“…On the basis of summarizing the predecessors' research [5][6], combined with the current status of related technologies [7][8][9][10][11], following with the basic characteristics of virtual radio [1], considering of the problem of time synchronization in virtual radio system, the basic structure of virtual radio is design as shown in Fig .2. Note that virtual radio platform means the baseband processing parts indicated in the dashed frame on the drawing of Fig .2.…”

Demonstration of cooperative diversity using a custom software-defined radio prototype

“…For simplifying and broadening the range of possible experimentation, a custom SDR prototype [4] based on the USRP and GNU Radio has been developed. This prototype, illustrated in Fig.…”

Implementation of a low-cost reconfigurable antenna array for SDR-based communication systems

“…The early GNU experimentations were only "in-lab", but recently some applications of GNU-radio working in open field have been presented in literature. In [12], a GNU-radio based multi-channel voice transceiver has been developed and tested in emergency rescue scenarios. A software receiver for the emergency weather information network (EWIN) fully implemented on GNU-radio platforms is presented in [13].…”