Invention Grant
- Patent Title: Pilots for MIMO communication systems
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Application No.: US14836620Application Date: 2015-08-26
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Publication No.: US09967005B2Publication Date: 2018-05-08
- Inventor: John Ketchum , Mark Wallace , J. Rodney Walton , Steven Howard
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: Qualcomm Incorporated
- Current Assignee: Qualcomm Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Arent Fox, LLP
- Main IPC: H04B7/02
- IPC: H04B7/02 ; H04B7/04 ; H04B7/06 ; H04B7/08 ; H04L1/00 ; H04L1/06 ; H04L1/08 ; H04L25/02 ; H04L25/03 ; H04L27/26 ; H04L1/16 ; H04L5/00 ; H04L27/00 ; H04W16/28 ; H04W28/20 ; H04W52/50

Abstract:
Pilots suitable for use in MIMO systems and capable of supporting various functions are described. The various types of pilot include—a beacon pilot, a MIMO pilot, a steered reference or steered pilot, and a carrier pilot. The beacon pilot is transmitted from all transmit antennas and may be used for timing and frequency acquisition. The MIMO pilot is transmitted from all transmit antennas but is covered with different orthogonal codes assigned to the transmit antennas. The MIMO pilot may be used for channel estimation. The steered reference is transmitted on specific eigenmodes of a MIMO channel and is user terminal specific. The steered reference may be used for channel estimation. The carrier pilot may be transmitted on designated subbands/antennas and may be used for phase tracking of a carrier signal. Various pilot transmission schemes may be devised based on different combinations of these various types of pilot.
Public/Granted literature
- US20150365147A1 PILOTS FOR MIMO COMMUNICATION SYSTEMS Public/Granted day:2015-12-17
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