Invention Grant
- Patent Title: Multi-layer beamforming with partial channel state information
- Patent Title (中): 具有部分信道状态信息的多层波束成形
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Application No.: US13988524Application Date: 2010-11-22
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Publication No.: US08989295B2Publication Date: 2015-03-24
- Inventor: Peter Skov , Lilei Wang
- Applicant: Peter Skov , Lilei Wang
- Applicant Address: FI Espoo
- Assignee: Nokia Solutions and Networks Oy
- Current Assignee: Nokia Solutions and Networks Oy
- Current Assignee Address: FI Espoo
- Agency: Harrington & Smith
- International Application: PCT/CN2010/078954 WO 20101122
- International Announcement: WO2012/068716 WO 20120531
- Main IPC: H04B7/02
- IPC: H04B7/02 ; H04L1/02 ; H04B7/04 ; H04B7/06 ; H04L5/00

Abstract:
A method of determining precoding information for beamforming between a sender and a receiver the method includes determining a first precoding vector of a first signal layer based on partial channel state information of a channel between the sender and the receiver. The method also includes determining a first guess vector based on long-term characteristics of the channel between the sender and the receiver. A grouping of antennas of the sender is defined and a phase shift value for each group of antennas is specified. The method further includes determining a second precoding vector in the sender of a second signal layer by multiplying each element in the first guess vector with the phase shift value specified for the group of antennas associated with said element in the first guess vector.
Public/Granted literature
- US20130243110A1 Multi-Layer Beamforming with Partial Channel State Information Public/Granted day:2013-09-19
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