Invention Grant
- Patent Title: Closed loop precoding over a set of parallel channels
- Patent Title (中): 在一组并行通道上进行闭环预编码
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Application No.: US12951855Application Date: 2010-11-22
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Publication No.: US08488580B2Publication Date: 2013-07-16
- Inventor: Mohammad Ali Khojastepour
- Applicant: Mohammad Ali 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
- Main IPC: H04J1/00
- IPC: H04J1/00

Abstract:
Methods and apparatus are disclosed for applying successive multi-rank beamforming strategies (e.g., successive precoding strategies) for the design of precoders over a set of parallel channels. Successive beamforming is applied to a narrow band channel model and is also applied for finer quantization of a single beamforming vector (e.g., recursive beamforming). A first embodiment provides the optimal approach with high complexity. An alternative embodiment provides successive beamforming for near optimal precoding selection with medium complexity. A low complexity method for precoder selection is also provided wherein a channel representative matrix for the set of parallel channels is determined and successive beamforming on the calculated channel representative is applied.
Public/Granted literature
- US20110134775A1 Closed Loop Precoding Over a Set of Parallel Channels Public/Granted day:2011-06-09
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