Integration of a GFDM Secondary System in an OFDM Primary system
Författare
Summary, in English
Concepts of cognitive radio are yet in an early stage of development. They aim at improving the efficiency of spectrum utilization by exploiting locally and temporally vacant parts of the spectrum. When hierarchical spectrum access is considered, secondary users are authorized to use spectrum white spaces on a non-interfering basis, where minimal impact on the primary systems has to be ensured. GFDM is a digital multi-carrier transceiver concept that employs pulse shaping filters to provide control over the transmitted signal's spectral properties, a cyclic prefix that enables an efficient FFT-based frequency domain equalization scheme as well as tail biting as a way to make the prefix independent of the filter length. In this paper, two setups of uncoded AWGN transmission are analyzed through simulation. Both setups have in common that an OFDM primary system is overlaid by a secondary system. For that purpose, resources are made free artificially. First, a non-synchronized OFDM system is inserted into the white space. Then, the results are compared to the case when the secondary system operates with the GFDM scheme. Both setups are reviewed under the aspect of bit error performance in dependence of guard bands and various pulse shaping filter parameters. Conclusions for the primary and secondary system are drawn.
Publiceringsår
2011
Språk
Engelska
Publikation/Tidskrift/Serie
2011 Future Network & Mobile Summit
Fulltext
Länkar
Dokumenttyp
Konferensbidrag
Förlag
IEEE - Institute of Electrical and Electronics Engineers Inc.
Ämne
- Electrical Engineering, Electronic Engineering, Information Engineering
Nyckelord
- GFDM
- multicarrier transmission
- OFDM
- cognitive radio
Conference name
Future Network and Mobile Summit (FNMS)
Conference date
2011-06-15 - 2011-06-17
Conference place
Warsaw, Poland
Status
Published
Forskningsgrupp
- Telecommunication Theory
ISBN/ISSN/Övrigt
- ISBN: 978-1-4577-0928-9