Invention Grant
- Patent Title: Codebook with nested structure
- Patent Title (中): 嵌套结构的代码本
-
Application No.: US13524269Application Date: 2012-06-15
-
Publication No.: US08374562B2Publication Date: 2013-02-12
- Inventor: Mohammad Ali Khojastepour , Narayan Prasad
- Applicant: Mohammad Ali 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 Joseph Kolodka; Akitaka Kimura
- 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
- US20120257685A1 Codebook With Nested Structure Public/Granted day:2012-10-11
Information query