An SDR architecture for OFDM transmission over USRP2 boards
2011 (English)In: Conference Record: Asilomar Conference on Signals, Systems and Computers, 2011, 965-969 p.Conference paper (Refereed)
The Universal Software Radio Peripheral (USRP) developed by Ettus research is emerging as one of the most promising hardware solution for building a Software Defined Radio (SDR) platform. Originally designed for supporting GNU radio, it can also be interfaced to customized C++ code, thus allowing a higher degree of flexibility in the design of the transceiver chain. In this paper we describe the implementation of a coded Orthogonal Frequency Division Multiplexing (OFDM) transceiver running over USRP2 boards. The baseband processing and the radio-frequency settings are designed for coping with a local area scenario as well as with the physical capabilities of the USRP2 boards. Moreover, a simple subcarrier blinding algorithm is proposed with the aim of compensating the common phase error in the symbol constellation due to the limited nominal accuracy of the local oscillators. Performance results show the effectiveness of the proposed architecture and settings for achieving Block Error Rate (BLER) results below 1% at 12 dB of Signal-to-Noise Ratio (SNR) without requiring a high precision reference clock.
Place, publisher, year, edition, pages
2011. 965-969 p.
, Conference Record - Asilomar Conference on Signals, Systems and Computers, ISSN 1058-6393
OFDM, SDR, UHD, USRP2, Base-band processing, Block error rates, C++ codes, Coded orthogonal frequency-division multiplexing, Common phase errors, Degree of flexibility, GNU radio, Hardware solutions, High precision, Local oscillators, OFDM transmission, Physical capabilities, Proposed architectures, Radio frequencies, Reference clock, Signaltonoise ratio (SNR), Software-defined radios, Subcarrier, Hardware, Radio communication, Transceivers, Orthogonal frequency division multiplexing
IdentifiersURN: urn:nbn:se:kth:diva-149773DOI: 10.1109/ACSSC.2011.6190154ScopusID: 2-s2.0-84861311337ISBN: 9781467303231OAI: oai:DiVA.org:kth-149773DiVA: diva2:742304
45th Asilomar Conference on Signals, Systems and Computers, ASILOMAR 2011; Pacific Grove, CA, United States, 6-9 November, 2011
QC 201409012014-09-012014-08-272014-10-03Bibliographically approved