Abstract
Accurate transmit-side channel state information (CSI) is essential for achieving optimal performance of large-scale multiple-input multiple-output (MIMO) systems. However, due to high dimensionality of the massive MIMO systems, large overhead of the uplink CSI feedback is a big concern for frequency division duplexing (FDD) systems. In this paper, we propose antenna group scheduling (AGS) algorithm that combines antenna selection and user scheduling for pursuing further reduction in feedback overhead. The AGS method selects the antenna group with the maximum channel gain to reduce the dimension of channel vector and schedules users in the group maximizing the sum rate. Simulation results demonstrate that the proposed technique achieves significant feedback overhead reduction over the conventional beamforming techniques (33%∼50%) under the same target sum rate requirement.
Original language | English |
---|---|
Title of host publication | 2014 IEEE Global Communications Conference, GLOBECOM 2014 |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
Pages | 3302-3307 |
Number of pages | 6 |
ISBN (Print) | 9781479935116 |
DOIs | |
Publication status | Published - 2014 Feb 9 |
Externally published | Yes |
Event | 2014 IEEE Global Communications Conference, GLOBECOM 2014 - Austin, United States Duration: 2014 Dec 8 → 2014 Dec 12 |
Other
Other | 2014 IEEE Global Communications Conference, GLOBECOM 2014 |
---|---|
Country/Territory | United States |
City | Austin |
Period | 14/12/8 → 14/12/12 |
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Computer Networks and Communications
- Communication