Change search
ReferencesLink to record
Permanent link

Direct link
Effective Capacity Maximization in Multi-Antenna Channels with Covariance Feedback
2010 (English)In: IEEE Transactions on Wireless Communications, ISSN 1536-1276, E-ISSN 1558-2248, Vol. 9, no 10, 2988-2993 p.Article in journal (Refereed) PublishedText
Abstract [en]

The tradeoff between average transmission rate and average delay is important for the system design of future wireless communication systems. In double-correlated multiple antenna channels, the spatial degrees of freedom allow to optimize the transmit strategy under throughput/delay priority. In this work, we maximize the effective capacity of a MIMO system with covariance feedback. Interestingly, the larger the delay requirement is, the more spatial degrees of freedom are used to avoid low instantaneous transmission rates. This fact is shown analytically by deriving a closed-form expression for the beamforming optimality range as a function of the spatial correlation, the SNR, and the QoS exponent. Numerical simulations illustrate the average effective capacity optimization and confirm the theoretical results.

Place, publisher, year, edition, pages
IEEE Press, 2010. Vol. 9, no 10, 2988-2993 p.
Keyword [en]
Effective capacity; multi-antenna; convex optimization; channel hardening
National Category
Engineering and Technology
URN: urn:nbn:se:kth:diva-182701DOI: 10.1109/TWC.2010.080210.091060ISI: 000283436800003ScopusID: 2-s2.0-77957901438OAI: diva2:1052187

QC 20161212

Available from: 2016-12-05 Created: 2016-02-22 Last updated: 2016-12-12Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Mochaourab, Rami
In the same journal
IEEE Transactions on Wireless Communications
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

ReferencesLink to record
Permanent link

Direct link