公开(公告)号：US09001774B2

公开(公告)日：2015-04-07

申请号：US14078204

申请日：2013-11-12

Applicant: Samsung Electronics Co., Ltd

Inventor： Farooq Khan

IPC: H04W72/04 ,  H04L27/26 ,  H04B7/06 ,  H04L25/02 ,  H04L25/03 ,  H04L5/00 ,  H04B7/12

CPC classification number: H04L27/2601 ,  H04B7/0671 ,  H04B7/0684 ,  H04B7/12 ,  H04L5/0048 ,  H04L25/022 ,  H04L25/0228 ,  H04L25/03955 ,  H04L27/261 ,  H04L27/2647

Abstract: A method of controlling downlink transmissions to a subscriber station capable of communicating with a base station of an orthogonal frequency division multiplexing (OFDM) network. The method comprises the steps of: receiving a first pilot signal from a first base station antenna; receiving a second pilot signal from a second base station antenna; and estimating the channel between the base station and subscriber station based on the received first and second pilot signals. The method also comprises determining a set of OFDM symbol processing parameters based on the step of estimating the channel and transmitting the OFDM symbol processing parameters to the base station. The base station uses the OFDM symbol processing parameters to control the relative gains and the relative delays of OFDM symbols transmitted from the first and second antennas.

Abstract translation: 控制能够与正交频分复用（OFDM）网络的基站通信的用户站的下行链路传输的方法。 该方法包括以下步骤：从第一基站天线接收第一导频信号; 从第二基站天线接收第二导频信号; 以及基于所接收的第一和第二导频信号来估计所述基站和所述用户站之间的信道。 该方法还包括基于估计信道并将OFDM符号处理参数发送到基站的步骤来确定一组OFDM符号处理参数。 基站使用OFDM符号处理参数来控制从第一和第二天线发送的OFDM符号的相对增益和相对延迟。

公开(公告)号：US20130202054A1

公开(公告)日：2013-08-08

申请号：US13751869

申请日：2013-01-28

Applicant: Samsung Electronics Co., Ltd.

Inventor： Farooq Khan ,  Sridhar Rajagopal ,  Zhouyue Pi ,  Shadi Abu-Surra

IPC: H04B7/04

CPC classification number: H04B7/0456 ,  H01Q3/26 ,  H01Q21/245 ,  H04B7/0408 ,  H04B7/0452 ,  H04B7/0617 ,  H04B7/0697

Abstract: A system is configured to perform Spatial Division Multiple Access. The system includes at least one transmitter or receiver capable of polarization alignment. The transmitter includes a baseband precoder configured to precode a signal, an array of sub-array antennas and a plurality of radio frequency (RF) chains. Each RF chain is coupled to a respective antenna sub-array of the array of antennas. The transmitter is configured to perform a method that includes precoding, by a baseband precoder, a signal for spatial division multiple access (SDMA). The method also includes applying, by each of the plurality of radio frequency (RF) chains, a phase shift and beamforming weight to the signal and transmitting the phase shifted and weighted signal by an array of sub-array antennas.

Abstract translation: 系统被配置为执行空间分多址。 该系统包括能够进行极化对准的至少一个发射器或接收器。 发射机包括被配置为对信号进行预编码的基带预编码器，子阵列天线阵列和多个射频（RF）链。 每个RF链耦合到天线阵列的相应天线子阵列。 发射机被配置为执行包括由基带预编码器预编码用于空分多址（SDMA）的信号的方法。 该方法还包括将多个射频（RF）链中的每一个应用于信号的相移和波束形成权重，并通过子阵列天线的阵列传输相移和加权的信号。

公开(公告)号：US20130107845A1

公开(公告)日：2013-05-02

申请号：US13725195

申请日：2012-12-21

Applicant: Samsung Electronics Co., Ltd.

Inventor： Zhouyue Pi ,  Jiannan Tsai ,  Farooq Khan

IPC: H04W72/04

CPC classification number: H04L5/0016 ,  H03M7/24 ,  H03M13/27 ,  H03M13/2957 ,  H03M13/6306 ,  H03M13/6525 ,  H04J13/18 ,  H04L1/1819 ,  H04L5/0023 ,  H04L5/0028 ,  H04L5/0041 ,  H04L5/0046 ,  H04L5/0064 ,  H04W72/044

Abstract: A method and apparatus for channel interleaving in a wireless communication system. In one aspect of the present invention, the data resource elements are assigned to multiple code blocks, and the numbers of data resource elements assigned to each code block are substantially equal. In another aspect of the present invention, a time-domain-multiplexing-first (TDM-first) approach and a frequency-domain-multiplexing-first (FDM-first) approach are proposed. In the TDM-first approach, at least one of a plurality of code blocks are assigned with a number of consecutive data carrying OFDM symbols. In the FDM-first approach, at least one of the plurality of code blocks are assigned with all of the data carrying OFDM symbols. Either one of the TDM first approach and the FDM-first approach may be selected in dependence upon the number of the code blocks, or the transport block size, or the data rate.