System-level Assessment of Non-Orthogonal Spectrum Sharing via Transmit Beamforming
2013 (English)In: Proceedings of the 77th IEEE Vehicular Technology Conference (VTC-spring), 2013, 1-6 p.Conference paper, Presentation (Refereed)
We assess the system-level performance of non-orthogonal spectrum sharing achieved via maximum sum-rate (SR), Nash bargaining (NB), and zero-forcing (ZF) transmit beamforming techniques. A look-up table based physical layer abstraction and radio resource management mechanisms (including packet scheduling) are proposed and incorporated in system-level simulations, jointly with other important aspects of network operation. In the simulated scenarios, the results show similar system-level performance of SR (or NB) as ZF in the context of spectrum sharing, when combined with maximum sum-rate (or proportional fair) packet scheduler. Further sensitivity analysis also shows similar behavior of all three beamforming techniques with regard to the impact on system-level performance of neighbor-cell activity level and feedback error. A more important observation from our results is that, under ideal conditions, the performance enhancement of non-orthogonal spectrum sharing over orthogonal spectrum sharing and fixed spectrum assignment is significant.
Place, publisher, year, edition, pages
2013. 1-6 p.
IdentifiersURN: urn:nbn:se:liu:diva-87190DOI: 10.1109/VTCSpring.2013.6692778ISBN: 978-146736337-2OAI: oai:DiVA.org:liu-87190DiVA: diva2:587089
Proceedings of the 77th IEEE Vehicular Technology Conference (VTC-spring)
FunderEU, FP7, Seventh Framework Programme, 248001