Abstract
Channel state feedback is a serious burden for transmit beamforming systems with many antennas in FDD mode. Instead of estimating the channel at the receiver and feeding back quantized beamformer information, a different approach that exploits the spatio-temporal correlation of the channel is proposed. The transmitter periodically sends a beamformed pilot signal, while the receiver feeds back the quantized innovation derived from either a Kalman filtering or a MAP tracking loop. Simulations show that close to optimum performance can be attained with only 2 bits per channel dwell, clearing a hurdle for transmit beamforming with many antennas in FDD mode.
Original language | English (US) |
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Title of host publication | Conference Record of the 48th Asilomar Conference on Signals, Systems and Computers |
Editors | Michael B. Matthews |
Publisher | IEEE Computer Society |
Pages | 993-997 |
Number of pages | 5 |
ISBN (Electronic) | 9781479982974 |
DOIs | |
State | Published - Apr 24 2015 |
Event | 48th Asilomar Conference on Signals, Systems and Computers, ACSSC 2015 - Pacific Grove, United States Duration: Nov 2 2014 → Nov 5 2014 |
Publication series
Name | Conference Record - Asilomar Conference on Signals, Systems and Computers |
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Volume | 2015-April |
ISSN (Print) | 1058-6393 |
Other
Other | 48th Asilomar Conference on Signals, Systems and Computers, ACSSC 2015 |
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Country/Territory | United States |
City | Pacific Grove |
Period | 11/2/14 → 11/5/14 |
Bibliographical note
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