Invention Grant
- Patent Title: Intra-node channel reciprocity compensation for radio access in MIMO wireless communication systems
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Application No.: US15674263Application Date: 2017-08-10
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Publication No.: US09991938B2Publication Date: 2018-06-05
- Inventor: Nikhil U. Kundargi , Karl F. Nieman , Junmo Sung
- Applicant: National Instruments Corporation
- Applicant Address: US TX Austin
- Assignee: NATIONAL INSTRUMENTS CORPORATION
- Current Assignee: NATIONAL INSTRUMENTS CORPORATION
- Current Assignee Address: US TX Austin
- Agent E. Alan Davis; James W. Huffman
- Main IPC: H04B7/04
- IPC: H04B7/04 ; H04B7/0413 ; H04L5/00 ; H04B17/11 ; H04W88/08 ; H04B7/06
Abstract:
A wireless cellular base station includes M antennas and one or more processing devices. For each antenna, the antenna transmits a calibration pilot symbol over the air and the other M−1 antennas receive the calibration pilot symbol over the air. The processing devices select one of the M antennas as a reference antenna and for each antenna of the M antennas, the processing devices calculate channel reciprocity calibration coefficients of the antenna with respect to the reference antenna based on the received calibration pilot symbols.
Public/Granted literature
- US20180048361A1 INTRA-NODE CHANNEL RECIPROCITY COMPENSATION FOR RADIO ACCESS IN MIMO WIRELESS COMMUNICATION SYSTEMS Public/Granted day:2018-02-15
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