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On the effect of feedback delay on limited-rate beamforming systems

Publication ,  Journal Article
Wu, Y; Achtzehn, A; Petrova, M; Mähönen, P; Calderbank, R
Published in: GLOBECOM - IEEE Global Telecommunications Conference
January 1, 2010

The use of beamforming to enable higher data rates in telecommunications is widely appreciated, but performance gains are typically calculated assuming delay-free feedback from the receiver and neglecting processing time. This paper introduces a mathematical framework based on outage probability that measures the extent to which current channel state information is accurate. Performance gains from beamforming can then be evaluated as a function of the currency of system state. Results are provided for Multiple Input Single Output (MISO) and for Multiuser Multiple Input Multiple Output (MU-MIMO) systems. Outage probabilities and effective diversity orders are calculated for widely used methods of beamforming such as Transmit Antenna Selection as a function of the speed of channel variation. ©2010 IEEE.

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GLOBECOM - IEEE Global Telecommunications Conference

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Publication Date

January 1, 2010
 

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Wu, Y., Achtzehn, A., Petrova, M., Mähönen, P., & Calderbank, R. (2010). On the effect of feedback delay on limited-rate beamforming systems. GLOBECOM - IEEE Global Telecommunications Conference. https://doi.org/10.1109/GLOCOM.2010.5684288
Wu, Y., A. Achtzehn, M. Petrova, P. Mähönen, and R. Calderbank. “On the effect of feedback delay on limited-rate beamforming systems.” GLOBECOM - IEEE Global Telecommunications Conference, January 1, 2010. https://doi.org/10.1109/GLOCOM.2010.5684288.
Wu Y, Achtzehn A, Petrova M, Mähönen P, Calderbank R. On the effect of feedback delay on limited-rate beamforming systems. GLOBECOM - IEEE Global Telecommunications Conference. 2010 Jan 1;
Wu, Y., et al. “On the effect of feedback delay on limited-rate beamforming systems.” GLOBECOM - IEEE Global Telecommunications Conference, Jan. 2010. Scopus, doi:10.1109/GLOCOM.2010.5684288.
Wu Y, Achtzehn A, Petrova M, Mähönen P, Calderbank R. On the effect of feedback delay on limited-rate beamforming systems. GLOBECOM - IEEE Global Telecommunications Conference. 2010 Jan 1;

Published In

GLOBECOM - IEEE Global Telecommunications Conference

DOI

Publication Date

January 1, 2010