Large-System Analysis of the K-Hop AF MIMO Relay Channel with Arbitrary Inputs
2013 (English)In: IEEE International Symposium on Information Theory: Proceedings, IEEE conference proceedings, 2013, 439-443 p.Conference paper (Refereed)
The present paper investigates the achievable data rates of multi-hop amplify-and-forward multi-antenna relay channels with arbitrary number of hops K. Each multi-antenna terminal in the system amplifies the received signal and retransmits it upstream. To analyze the ergodic end-to-end mutual information of the system, one has to perform averaging over the fading coefficients. To overcome this difficulty we apply large-system analysis, based on the assumption that the number of antennas grows without bound at every terminal. Using the replica method, we derive an explicit asymptotic expression for the ergodic mutual information between the input and output of the K-hop channel with no restrictions on the channel inputs. Numerical results support the validity of the replica analysis and show that the result is tight even for small antenna arrays.
Place, publisher, year, edition, pages
IEEE conference proceedings, 2013. 439-443 p.
IdentifiersURN: urn:nbn:se:kth:diva-124661DOI: 10.1109/ISIT.2013.6620264ISI: 000348913400089ScopusID: 2-s2.0-84890343807ISBN: 978-147990446-4OAI: oai:DiVA.org:kth-124661DiVA: diva2:638167
2013 IEEE International Symposium on Information Theory, ISIT 2013; Istanbul, Turkey, 7-12 July 2013
QC 201401092013-07-272013-07-272015-12-04Bibliographically approved