On the bounds of feedback rates for pilot-assisted MIMO systems
Document Type
Article
Publication Date
7-1-2007
Abstract
For pilot-assisted multiple-input-multiple-output (MIMO) systems with imperfect feedback, we investigate the relationship between the feedback transmission rate and the resulting closed-loop capacity gain. Based on this relationship quantified via rate-distortion theory, we investigate the lower and upper bounds of the feedback rate that would effect positive closed-loop capacity gains without overly consuming feedback transmission resources. Extensive simulations are carried out to validate the analytic results and to shed light on the achievable closed-loop MIMO capacity given the system configuration parameterized by the number of antennas, transmit signal-to-noise ratio, pilot power allotment, and finite feedback rate. Such results provide guideline on the feedback channel for meaningful designs of practical pilot-assisted MIMO systems. © 2007 IEEE.
Publication Title
IEEE Transactions on Vehicular Technology
Recommended Citation
Zhang, D.,
Wei, G.,
Zhu, J.,
&
Tian, Z.
(2007).
On the bounds of feedback rates for pilot-assisted MIMO systems.
IEEE Transactions on Vehicular Technology,
56(4 I), 1727-1736.
http://doi.org/10.1109/TVT.2007.897239
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/11160