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    OFDM receiver and methods for operating in high-throughput and increased range modes
    1.
    发明授权
    OFDM receiver and methods for operating in high-throughput and increased range modes 有权
    OFDM接收机和用于在高吞吐量和增加的范围模式下操作的方法

    公开(公告)号：US08045449B2

    公开(公告)日：2011-10-25

    申请号：US12611289

    申请日：2009-11-03

    Applicant: Ali S Sadri ,  Alexander A. Maltsev ,  Sergey E Sergeyev ,  Alexei V Davydov ,  Vadim S Sergeyev

    Inventor： Ali S Sadri ,  Alexander A. Maltsev ,  Sergey E Sergeyev ,  Alexei V Davydov ,  Vadim S Sergeyev

    IPC: H04J11/00

    CPC classification number: H04W28/04 ,  H04B7/0857 ,  H04B7/0874 ,  H04L5/0023 ,  H04L27/2608 ,  H04L27/2647 ,  H04W24/00

    Abstract: An OFDM receiver operates in a high-throughput mode or an increased-range mode. The receiver includes FFT circuitry to generate frequency domain symbol-modulated subcarriers for a set of OFDM subcarriers. During the increased-range mode, data is received on a single subchannel and the FFT circuitry generates frequency domain symbol-modulated subcarriers for a set of OFDM subcarriers associated with the single subchannel. During the high-throughput mode, data is received on each subchannel of a plurality of subchannels and the FFT circuitry generates frequency domain symbol-modulated subcarriers for a different one of the subchannels. The OFDM receiver may operate in accordance with one of the IEEE 802.11 standards.

    Abstract translation: OFDM接收机在高吞吐量模式或增加范围模式下工作。 接收机包括用于为一组OFDM子载波生成频域符号调制副载波的FFT电路。 在增加范围模式期间，在单个子信道上接收数据，并且FFT电路针对与单个子信道相关联的一组OFDM子载波生成频域符号调制副载波。 在高吞吐量模式期间，在多个子信道的每个子信道上接收数据，并且FFT电路为不同的一个子信道生成频域符号调制子载波。 OFDM接收机可以根据IEEE 802.11标准之一来操作。

    Method and adaptive bit interleaver for wideband systems using adaptive bit loading
    4.
    发明授权
    Method and adaptive bit interleaver for wideband systems using adaptive bit loading 有权
    使用自适应位加载的宽带系统的方法和自适应比特交织器

    公开(公告)号：US07570695B2

    公开(公告)日：2009-08-04

    申请号：US10740170

    申请日：2003-12-18

    Applicant: Alexander A. Maltsev ,  Ali S. Sadri ,  Alexei V. Davydov

    Inventor： Alexander A. Maltsev ,  Ali S. Sadri ,  Alexei V. Davydov

    IPC: H04K1/10 ,  H04L27/00 ,  H03K9/00

    CPC classification number: H04L1/0071 ,  H04L1/0042 ,  H04L27/2608 ,  H04L27/2628

    Abstract: An adaptive interleaver for wideband orthogonal frequency division multiplexed (OFDM) communications permutes a variable number of coded bits per OFDM symbol (Ncbps). The variable number of coded bits is calculated based on individual subcarrier modulation assignments for orthogonal subcarriers of a wideband channel. The interleaver matrix size may be based on the variable number of coded bits per OFDM symbol and the number of subchannels that comprise the wideband channel. The interleaver may add padding bits to the interleaver matrix to fill any remaining positions, and after performing an interleaving operation, the interleaver may prune the padding bits to provide a sequence of interleaved bits for subsequent modulation on the orthogonal subcarriers. A receiver may include an adaptive deinterleaver to reverse the process.

    Abstract translation: 用于宽带正交频分复用（OFDM）通信的自适应交织器将每OFDM符号的可变数量的编码比特（Ncbps）置换。 基于宽带信道的正交子载波的各个子载波调制分配来计算编码比特的可变数目。 交织器矩阵大小可以基于每OFDM符号的可变数量的编码比特和构成宽带信道的子信道的数量。 交织器可以向交织器矩阵添加填充比特以填充任何剩余的位置，并且在执行交织操作之后，交织器可以修剪填充比特以提供交织的比特序列以用于正交子载波上的后续调制。 接收机可以包括自适应解交织器来反转该过程。

    CSI-RS ANTENNA PORTS EXTENSION AND 3D CODEBOOK DESIGN
    7.
    发明申请
    CSI-RS ANTENNA PORTS EXTENSION AND 3D CODEBOOK DESIGN 有权
    CSI-RS天线端口扩展和3D代码设计

    公开(公告)号：US20150180684A1

    公开(公告)日：2015-06-25

    申请号：US14128338

    申请日：2013-09-27

    Applicant: Xiaogang Chen ,  Yuan Zhu ,  Qinghua Li ,  Alexei V. Davydov ,  Hooman Shirani-Mehr

    Inventor： Xiaogang Chen ,  Yuan Zhu ,  Qinghua Li ,  Alexei V. Davydov ,  Hooman Shirani-Mehr

    IPC: H04L25/03 ,  H04B17/24 ,  H04B7/04

    CPC classification number: H04L25/03929 ,  H04B7/0413 ,  H04B7/0417 ,  H04B7/0478 ,  H04B7/0617 ,  H04B17/24 ,  H04L5/0048

    Abstract: A system and a method is disclosed for selecting at least one vertical precoding vector of a three-dimensional Multiple Input Multiple Output (3D-MIMO) configuration based on Channel State Information-Reference Signal (CSI-RS) information that is feedback from a wireless terminal device to an evolved Node B (eNB). The 3D-MIMO CSI-RS process is configured for a plurality of CSI-RS ports in which the plurality of CSI-RS ports that are grouped into a plurality of CSI-RS port groups and in which corresponds to the 3D arrangement of antennas. CSI configuration information for the different CSI-RS port groups can be a time-domain-based CSI-RS process, a frequency-domain-based CSI-RS process, a code-domain-based CSI-RS process, or a combination thereof. CSI-RS information is measured for each CSI-RS group and feedback for selection of the at least one vertical precoding vector.

    Abstract translation: 公开了一种用于基于来自无线电的反馈的信道状态信息参考信号（CSI-RS）信息来选择三维多输入多输出（3D-MIMO）配置的至少一个垂直预编码向量的系统和方法 终端设备到演进节点B（eNB）。 为多个CSI-RS端口配置3D-MIMO CSI-RS进程，其中分组为多个CSI-RS端口组并且其中对应于天线的3D布置的多个CSI-RS端口。 不同CSI-RS端口组的CSI配置信息可以是基于时域的CSI-RS进程，基于频域的CSI-RS进程，基于码域的CSI-RS进程或其组合 。 针对每个CSI-RS组测量CSI-RS信息和用于选择至少一个垂直预编码向量的反馈。

    CARRIER TYPE (NCT) INFORMATION EMBEDDED IN SYNCHRONIZATION SIGNAL
    8.
    发明申请
    CARRIER TYPE (NCT) INFORMATION EMBEDDED IN SYNCHRONIZATION SIGNAL 有权
    载波类型（NCT）嵌入在同步信号中

    公开(公告)号：US20140254567A1

    公开(公告)日：2014-09-11

    申请号：US14128343

    申请日：2013-09-04

    Applicant: Seunghee Han ,  Alexei V. Davydov ,  Hong He ,  Xiaogang Chen ,  Jong-Kae Fwu

    Inventor： Seunghee Han ,  Alexei V. Davydov ,  Hong He ,  Xiaogang Chen ,  Jong-Kae Fwu

    IPC: H04W48/08

    CPC classification number: H04W72/085 ,  H04B3/232 ,  H04B7/015 ,  H04L5/0048 ,  H04L5/14 ,  H04L25/00 ,  H04L25/03866 ,  H04L67/1068 ,  H04W8/005 ,  H04W48/08 ,  H04W56/00 ,  H04W72/0413 ,  H04W72/082 ,  H04W76/14 ,  H04W76/27

    Abstract: A Second Synchronous Signal (SSS) for a 3GPP LTE downlink signal is generated in such a way that a legacy User Equipment (UE) can determine whether the downlink signal comprises a legacy downlink signal or a New Carrier Type (NCT) downlink signal, which is unavailable to a legacy UE. One exemplary embodiment provides that a first binary sequence and a second binary sequence are generated in which the first and second binary sequences are part of the SSS for the downlink signal. The first binary sequence is multiplied by a first scrambling sequence, and the second binary sequence by a second scrambling sequence in which the first and second scrambling sequences are selected to indicate that the downlink signal is a new carrier type downlink signal. Other exemplary embodiments provide that an order of the first and second scrambling sequences indicates whether the downlink signal is a NCT downlink signal.

    Abstract translation: 生成用于3GPP LTE下行链路信号的第二同步信号（SSS），使得传统用户设备（UE）可以确定下行链路信号是否包括传统下行链路信号或新载波类型（NCT）下行链路信号，其中 对于传统UE是不可用的。 一个示例性实施例提供了生成第一二进制序列和第二二进制序列，其中第一和第二二进制序列是用于下行链路信号的SSS的一部分。 第一二进制序列乘以第一加扰序列，第二二进制序列乘以第二加扰序列，其中选择第一和第二加扰序列以指示下行链路信号是新的载波类型下行链路信号。 其他示例性实施例提供了第一和第二加扰序列的顺序指示下行链路信号是否是NCT下行链路信号。

    Multicarrier transmitter for multiple-input multiple-output communication systems and methods for puncturing bits for pilot tones
    10.
    发明授权
    Multicarrier transmitter for multiple-input multiple-output communication systems and methods for puncturing bits for pilot tones 失效
    用于多输入多输出通信系统的多载波发射机和用于对导频音进行删截比特的方法

    公开(公告)号：US07706455B2

    公开(公告)日：2010-04-27

    申请号：US11234972

    申请日：2005-09-26

    Applicant: Alexei V. Davydov ,  Qinghua Li

    Inventor： Alexei V. Davydov ,  Qinghua Li

    IPC: H04L27/28

    CPC classification number: H04L1/0041 ,  H04L1/0068 ,  H04L1/0625 ,  H04L5/0023 ,  H04L5/0048 ,  H04L27/2626

    Abstract: Embodiments of a transmitter and methods for puncturing bits are generally described herein. Other embodiments may be described and claimed. In some embodiments, a multicarrier transmitter performs bit puncturing for pilot subcarriers in two operations. The first operation may uniformly removes bits from an encoded bit stream to achieve a predetermined code rate reserving space for pilot subcarriers of a predetermined number of antennas. The second operation may remove bits from each spatial data stream after interleaving in a manner to achieve approximately equal spacing between the punctured bits before interleaving. In this way, a conventional interleaver may be used. The second operation reserves space for pilot subcarriers when a greater number of antennas than the predetermined number are used.

    Abstract translation: 发射机的实施例和穿孔比特的方法一般在此描述。 可以描述和要求保护其他实施例。 在一些实施例中，多载波发射机在两个操作中对导频子载波执行比特删截。 第一操作可以均匀地从编码比特流中移除比特以实现预定数量的天线的导频子载波的预定码率预留空间。 第二操作可以在交织之后从每个空间数据流中移除比特，以便在交织之前在穿孔比特之间实现大致相等的间隔。 以这种方式，可以使用常规的交织器。 当使用比预定数量更多的天线时，第二操作为导频子载波保留空间。

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