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) |
|---|---|
| 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 |
|---|---|
| Volume | 2015-April |
| ISSN (Print) | 1058-6393 |
Other
| Other | 48th Asilomar Conference on Signals, Systems and Computers, ACSSC 2015 |
|---|---|
| Country/Territory | United States |
| City | Pacific Grove |
| Period | 11/2/14 → 11/5/14 |
Bibliographical note
Publisher Copyright:© 2014 IEEE.