Invention Grant
- Patent Title: Successive beamforming strategies and methods
- Patent Title (中): 连续波束成形策略和方法
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Application No.: US13155728Application Date: 2011-06-08
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Publication No.: US08271023B2Publication Date: 2012-09-18
- Inventor: Mohammad A. Khojastepour
- Applicant: Mohammad A. Khojastepour
- Applicant Address: US NJ Princeton
- Assignee: NEC Laboratories America, Inc.
- Current Assignee: NEC Laboratories America, Inc.
- Current Assignee Address: US NJ Princeton
- Agent Joseph Kolodka; Akitaka Kimura
- Main IPC: H04M1/00
- IPC: H04M1/00

Abstract:
A quantized multi-rank beamforming scheme for multiple-antenna systems such as a multiple-input-multiple-output (MIMO) wireless downlink User equipment (UE) estimates downlink channel and transmit power and determines rank and power allocations. A quantized beamforming matrix is then determined by the UE using successive beamforming. The UE also determines channel quality indices (CQI) which it feeds-back to the wireless downlink base station along with the index of the quantized beamforming matrix. The base station uses the CQI information to select a UE for scheduling of downlink transmission and the quantized beamforming matrix index received from the selected UE to beamform the downlink transmission to the UE. Base station overhead and is minimized while providing near-optimal performance given the constraints of a limited feed-back channel and computational complexity of the UE.
Public/Granted literature
- US20110268212A1 Successive Beamforming Strategies and Methods Public/Granted day:2011-11-03
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