发明授权
- 专利标题: Multi-rank beamforming precoding apparatus and method
- 专利标题(中): 多级波束成形预编码装置及方法
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申请号: US12026120申请日: 2008-02-05
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公开(公告)号: US07949318B2公开(公告)日: 2011-05-24
- 发明人: Narayan Prasad , Mohammad Ali Khojastepour , Mohammad Madihian , Xiaodong Wang
- 申请人: Narayan Prasad , Mohammad Ali Khojastepour , Mohammad Madihian , Xiaodong Wang
- 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 Jeffery Brosemer; Joseph Kolodka
- 主分类号: H04B1/04
- IPC分类号: H04B1/04
摘要:
A multi-rank beamforming (MRBF) scheme in which the downlink channel is estimated and an optimal precoding matrix to be used by the MRBF transmitter is determined accordingly. The optimal precoding matrix is selected from a codebook of matrices having a recursive structure which allows for efficient computation of the optimal precoding matrix and corresponding Signal to Interference and Noise Ratio (SINR). The codebook also enjoys a small storage footprint. Due to the computational efficiency and modest memory requirements, the optimal precoding determination can be made at user equipment (UE) and communicated to a transmitting base station over a limited uplink channel for implementation over the downlink channel.
公开/授权文献
- US20080188190A1 MULTI-RANK BEAMFORMING PRECODING APPARATUS AND METHOD 公开/授权日:2008-08-07
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