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1. 发明授权

US08964871B2 Codebook based downlink multi-user interference alignment scheme 有权
标题翻译：基于码本的下行多用户干扰对齐方案
公开(公告)号：US08964871B2
公开(公告)日：2015-02-24
申请号：US13739420
申请日：2013-01-11
申请人： BlackBerry Limited
发明人： Amin Mobasher , Alireza Bayesteh
IPC分类号： H04B7/02 , H04B7/04 , H04L25/03 , H04L25/02
CPC分类号： H04B7/0456 , H04B7/024 , H04B7/0452 , H04L25/0204 , H04L25/0228 , H04L25/0248 , H04L25/03898 , H04L25/03949
摘要： A method for operating a receiver having multiple receive antennas to process a signal from a first affiliated transmitter and align interference from a second interfering transmitter includes providing a codebook of predefined matrices. Each predefined matrix has an identifier associated therewith. A first channel matrix and a second channel matrix are assembled for the first and the second transmitters. An equivalent direct channel matrix is determined from the first and second channel matrices, and predetermined reference vectors are selected from a plurality of predetermined vectors. A predefined matrix is selected from the codebook based upon the equivalent direct channel matrix and an identifier for the predefined matrix is fed back to the first transmitter. A signal is received and decoded using a combining matrix derived from the predetermined reference vectors and an inverse of the second channel matrix, thereby reducing interference from the interfering transmitters.
摘要翻译：一种用于操作具有多个接收天线以处理来自第一附属发射机的信号并且对准来自第二干扰发射机的干扰的接收机的方法包括提供预定矩阵的码本。每个预定矩阵具有与其相关联的标识符。为第一和第二发射机组装第一信道矩阵和第二信道矩阵。从第一和第二信道矩阵确定等效的直接信道矩阵，并且从多个预定向量中选择预定的参考向量。基于等效的直接信道矩阵从码本中选择预定义矩阵，并且将预定义矩阵的标识符反馈到第一发射机。使用从预定参考向量导出的组合矩阵和第二信道矩阵的倒数来接收和解码信号，从而减少来自干扰发射机的干扰。

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