Closed-form capacity formula for multi-antenna cognitive radio networks with asymmetric fading
2014 (English)In: 2014 IEEE International Conference on Communications, ICC 2014, IEEE Computer Society, 2014, 2141-2146 p.Conference paper (Refereed)
A cognitive radio network with a multiple-input single-output secondary link and a multi-antenna primary receiver is considered. The secondary transmitter steers its transmission into the direction of its intended destination in order to maximize the received signal-to-noise ratio. Under this beam-forming strategy, the power allocation is optimized to achieve the ergodic capacity under the constraint that the long-term interference, caused at the primary receiver, will not exceed a predefined threshold. Assuming line-of-sight communication (Rician fading) for the secondary link and Rayleigh fading for the secondary-to-primary link channel, we derive the exact closed-form expression for the ergodic capacity. Numerical results corroborate theoretical findings and illustrate the manifold impact of the system parameters into its performance.
Place, publisher, year, edition, pages
IEEE Computer Society, 2014. 2141-2146 p.
Antennas, Channel capacity, Rayleigh fading, Signal to noise ratio, Closed-form expression, Cognitive radio network, Ergodic capacity, Line of sight communications, Multiple input single outputs, Numerical results, Power allocations, Rician fading
IdentifiersURN: urn:nbn:se:kth:diva-159152DOI: 10.1109/ICC.2014.6883640ScopusID: 2-s2.0-84906998204ISBN: 978-147992003-7OAI: oai:DiVA.org:kth-159152DiVA: diva2:782717
2014 1st IEEE International Conference on Communications, ICC 2014, Sydney, NSW, Australia, 10 June 2014 through 14 June 2014
FunderEU, FP7, Seventh Framework Programme, ERC 228044.
QC 201502112015-01-222015-01-222015-11-13Bibliographically approved