Method and system for antenna selection in wireless networks
AssigneeMitsubishi Electric Research Laboratories, Inc.
InventorsNeelesh B. Mehta, Erdem Bala, Jinyun Zhang, Andreas F. Molisch
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Abstract
A method and system selects a subset of antennas from a set of antennas to transmit user data in a wireless communication system. The user data is transmitted during a first transmission time intervals (TTI) using a first subset of antennas. Pilot tones are transmitted during a second TTI using a second subset of antennas. Corresponding channel qualities are estimated for the first subset of antennas and the second subset of antennas from the user data and the pilot tones. Then, based on the estimating, a best subset of antenna is selected from the first subset of antennas and the second subset of antennas to transmit the user data during a subsequent TTI.
Claims22
A method for selecting a subset of antennas from a set of antennas to transmit user data in a wireless communication system, comprising the steps of;
- transmitting the user data during a first transmission time interval (TTI) using a first subset of antennas;
- transmitting pilot tones during a second TTI using a second subset of antennas;
- estimating corresponding channel qualities for the first subset of antennas and the second subset of antennas from the user data and the pilot tones;
- and
- selecting, based on the estimating, a best subset of antennas from the first subset of antennas and the second subset of antennas to transmit the user data during a subsequent TTI.
The method 1, in which the user data and the pilot signals are transmitting by multiple subsets of antennas, and a subset of the best antennas are selected.
A system for selecting a subset of antennas from a set of antennas to transmit user data in a wireless communication system, comprising:
- means for transmitting the user data during a first transmission time interval (TTI) using a first subset of antennas;
- means for transmitting pilot tones during a second TTI using a second subset of antennas;
- means for estimating corresponding channel qualities for the first subset of antennas and the second subset of antennas from the user data and the pilot tones;
- and
- means for selecting, based on the estimating, a best subset of antennas from the first subset of antennas and the second subset of antennas to transmit the user data during a subsequent TTI.
Dependencies are inferred from the claim text.