发明授权
- 专利标题: Methods to transmit and receive for low dimensions MIMO systems
- 专利标题(中): 低维MIMO系统的发送和接收方法
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申请号: US13112672申请日: 2011-05-20
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公开(公告)号: US08315328B2公开(公告)日: 2012-11-20
- 发明人: Mohammad A. Khojastepour
- 申请人: Mohammad A. Khojastepour
- 申请人地址: US NJ Princeton
- 专利权人: NEC Laboratories America, Inc.
- 当前专利权人: NEC Laboratories America, Inc.
- 当前专利权人地址: US NJ Princeton
- 代理商 Akitaka Kimura; Joseph Kolodka
- 主分类号: H04B7/02
- IPC分类号: H04B7/02 ; H04B7/10
摘要:
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.
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