Bertalan EgedBertalan Eged, et. al., et. al.Budapest Budapest UUniversity of Technology and Economicsniversity of Technology and Economics

DepDepartmenartmentt of Microwave Telecommunicationsof Microwave Telecommunications H-1111 Budapest, H-1111 Budapest, Goldmann GyGoldmann Gy. tér 3. . tér 3. TEL: +36 1 463-TEL: +36 1 463-35143514 FAX: +36 1 463-3289 email: FAX: +36 1 463-3289 email: begedbeged@@mhtmht..bmebme..huhu

Software Radio Platform Software Radio Platform usingusing WidebandWideband IF Sampled Architecture IF Sampled Architecture

ForFor more more information visit our websiteinformation visit our website::

httphttp://://witwit..mhtmht..bmebme.hu.hu

Wireless InformationTechnology Lab

As processing and samplingtechnologies improve, digitalmoves from the basebandend “towards the antenna”

Software Radio: can be reconfigured for multiple air interfaces (AMPS,GSM, EDGE, CDMAOne, CDMA2000, W-CDMA) & advanced technologythrough software downloadsDigital Radio: scalable hardware platform for software radio application

Using baseband sampling modulation is done in analog domain Using IF sampled architecture modulation is done in digital domain

Multi-carrier radio:multiple digitalupconverters put eachcarrier at a slightlydifferent IF frequency.

analog

digital

Four channelsof multi-carrierDigital Up-Converter(DUC) areintegrated inone chip andfour chips canbe cascadedfor higherchannel density

3D preview ofour 16 channelmulti-carriertransmitterplatformprototype

PCB layoutdesign of the16 channeltransmitter

Histogram ofGSM/EDGEmodulationscheme

Vector diagramof baseband IQsignals ofGSM/EDGEmodulationschemegenerated byour basebandDSP unit

Prototype of the software radio platform at WITLab

DSPDUC

FPGA

DAC

Research goals: design and implement a 16 channel,16Msps polyphase modulation, 1-2500MHz RF bandwidth

software radio platform.