公开(公告)号：US20150036669A1

公开(公告)日：2015-02-05

申请号：US14325114

申请日：2014-07-07

Applicant: APPLE INC.

Inventor： Jia MING ,  Jianglei MA ,  Wen TONG ,  Peiying ZHU

IPC: H04L5/00 ,  H04L27/26 ,  H04B7/04

CPC classification number: H04L5/0048 ,  H04B7/0417 ,  H04B7/0456 ,  H04B7/0634 ,  H04B7/0639 ,  H04L5/14 ,  H04L25/0204 ,  H04L25/0224 ,  H04L25/0242 ,  H04L25/03343 ,  H04L27/2601 ,  H04L27/2613 ,  H04L2025/03426 ,  H04L2025/03802

Abstract: Methods, devices and systems are provided for transmitting and receiving MIMO signals. In one embodiment, transmitting of the MIMO signals involves pre-coding each of at least two data symbols using a respective pre-coding codeword to preclude a corresponding plurality of pre-coded data symbols. A respective signal is transmitted from each of a plurality of antennas, the respective signal including one of the pre-coded signals and at least one pilot for use in channel estimation. The signals collectively further include at least one beacon pilot vector consisting of a respective beacon pilot per antenna, the beacon pilot vector containing contents known to a receiver for use by the receiver in determining the codeword used to pre-code the at least one data signal.

Abstract translation: 提供了发送和接收MIMO信号的方法，设备和系统。 在一个实施例中，MIMO信号的发送涉及使用相应的预编码码字对至少两个数据符号中的每一个进行预编码，以排除相应的多个预编码数据符号。 相应的信号从多个天线中的每一个发送，各个信号包括一个预编码信号和至少一个导频，用于信道估计。 信号集体地进一步包括由每个天线的每个信标导频组成的至少一个信标导频向量，信标导频向量包含接收机已知的内容，以供接收机在确定用于对所述至少一个数据信号进行预编码的码字时使用 。