Invention Grant
- Patent Title: Feedback generator for codebook with nested structure
- Patent Title (中): 用于嵌套结构的码本的反馈生成器
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Application No.: US13111641Application Date: 2011-05-19
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Publication No.: US08238854B2Publication Date: 2012-08-07
- Inventor: Mohammad A. Khojastepour , Narayan Prasad
- Applicant: Mohammad A. Khojastepour , Narayan Prasad
- Applicant Address: US NJ Princeton
- Assignee: NEC Laboratories America, Inc.
- Current Assignee: NEC Laboratories America, Inc.
- Current Assignee Address: US NJ Princeton
- Agent Akitaka Kimura; Joseph Kolodka
- Main IPC: H04B1/04
- IPC: H04B1/04

Abstract:
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.
Public/Granted literature
- US20110274208A1 Feedback Generator For Codebook With Nested Structure Public/Granted day:2011-11-10
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