Invention Grant
- Patent Title: Quantized precoding over a set of parallel channels
- Patent Title (中): 通过一组并行通道进行量化预编码
-
Application No.: US11693286Application Date: 2007-03-29
-
Publication No.: US07839835B2Publication Date: 2010-11-23
- Inventor: Mohammad A. Khojastepour , Xiaodong Wang , Mohammad Madihian
- Applicant: Mohammad A. Khojastepour , Xiaodong Wang , Mohammad Madihian
- 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 preceding 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 preceding 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
- US20080049596A1 Quantized Precoding Over a Set of Parallel Channels Public/Granted day:2008-02-28
Information query