公开(公告)号：WO2007123366A3

公开(公告)日：2009-06-11

申请号：PCT/KR2007002010

申请日：2007-04-25

Applicant: LG ELECTRONICS INC ,  WANG SHU ,  YOON YOUNG CHEUL ,  KIM SANG GOOK ,  SUN LI-HSIANG ,  KWON SOON YIL ,  LEE SUK WOO ,  KIM HO BIN

Inventor： WANG SHU ,  YOON YOUNG CHEUL ,  KIM SANG GOOK ,  SUN LI-HSIANG ,  KWON SOON YIL ,  LEE SUK WOO ,  KIM HO BIN

IPC: H04L5/04 ,  H04L5/12 ,  H04L27/34 ,  H04W52/32 ,  H04W52/42

CPC classification number: H04L27/3488 ,  H04L5/04 ,  H04L5/12 ,  H04W52/325 ,  H04W52/42

Abstract: A method of configuring a sub-slot having a layer-modulated multi-user packet (MUP) is disclosed. More specifically, the method comprises modulating symbols associated with a first layer by using non-layered modulation scheme, and modulating symbols associated with a second layer and a third layer using a different layered-modulation scheme. Here, the symbols associated with the second layer and the third layer are multiplexed by any one of an orthogonal frequency division multiplexing, a code division multiplexing, a multi-carrier code division multiplexing, or a time division multiplexing.

Abstract translation: 公开了一种配置具有层调制多用户分组（MUP）的子时隙的方法。 更具体地，该方法包括通过使用非分层调制方案来调制与第一层相关联的符号，以及使用不同的分层调制方案调制与第二层和第三层相关联的符号。 这里，与第二层和第三层相关联的符号通过正交频分复用，码分复用，多载波码分复用或时分复用中的任何一个来复用。

公开(公告)号：WO2008100038A3

公开(公告)日：2008-08-21

申请号：PCT/KR2008/000744

申请日：2008-02-05

Applicant: LG ELECTRONICS INC. ,  LEE, Wook Bong ,  IHM, Bin Chul ,  LEE, Moon Il ,  CHUN, Jin Young

Inventor： LEE, Wook Bong ,  IHM, Bin Chul ,  LEE, Moon Il ,  CHUN, Jin Young

IPC: H04B7/06 ,  H04L1/02 ,  H04L5/12 ,  H04L27/26

Abstract: A method for performing a precoding based on a generalized phase shift or a precoding based on an extended phase shift in a Multi-Input Multi-Output (MIMO) system employing several sub-carriers, and a transceiver for supporting the same are disclosed. A phase-shift-based precoding matrix is generalized by multiplying a diagonal matrix for a phase shift by a unitary matrix for maintaining orthogonality between sub-carriers. In this case, a diagonal matrix part may be extended by multiplying a precoding matrix for removing interference between sub-carriers by a diagonal matrix for a phase shift. By generalization and extension of the phase-shift-based precoding, a transceiver is more simplified, and communication efficiency increases.

公开(公告)号：WO2008054917A2

公开(公告)日：2008-05-08

申请号：PCT/US2007/076579

申请日：2007-08-22

Applicant: VIASAT, INC. ,  DANKBERG, Mark, D. ,  MILLER, Mark J. ,  PATEROS, Charles, N.

Inventor： DANKBERG, Mark, D. ,  MILLER, Mark J. ,  PATEROS, Charles, N.

IPC: H04B7/02 ,  H04L5/12

CPC classification number: H04L5/0016 ,  H04B7/10 ,  H04B7/18513 ,  H04L5/0026 ,  H04L5/12 ,  H04L27/2602 ,  H04L27/2647

Abstract: Satellite communication systems and methods are disclosed. The communication system may include a gateway in communication with two satellites. The satellites are configured to receive polarized signals from a first plurality of users and orthogonally polarized signals from a second plurality of users. The signal may be an OFDM signal. The subscriber terminals may include an antenna pointed toward at least one of the satellites and configured to receive OFDM signals. The OFDM signal time is proportional to the longest transmission time difference of all subscriber terminals within the geographic area serviced by the satellites. Various other communication schemes are disclosed utilizing multiple satellites are also disclosed.

Abstract translation: 公开了卫星通信系统和方法。 通信系统可以包括与两个卫星通信的网关。 卫星被配置为接收来自第一多个用户的极化信号和来自第二多个用户的正交极化信号。 该信号可以是OFDM信号。 用户终端可以包括指向至少一个卫星并被配置为接收OFDM信号的天线。 OFDM信号时间与由卫星服务的地理区域内的所有用户终端的最长传输时间差成比例。 也披露了利用多个卫星公开的各种其他通信方案。

公开(公告)号：WO2006113119B1

公开(公告)日：2007-06-14

申请号：PCT/US2006012408

申请日：2006-03-31

Applicant: MOTOROLA INC ,  FRANK COLIN D ,  CORKE ROBERT J ,  JASPER STEVEN C ,  MAKHLOUF ISAM R

Inventor： FRANK COLIN D ,  CORKE ROBERT J ,  JASPER STEVEN C ,  MAKHLOUF ISAM R

IPC: H04L23/02 ,  H04L5/12 ,  H04L27/28

CPC classification number: H04L25/0236 ,  H04L27/2647

Abstract: A receiver (300) configured for: a) receiving (410) a first OFDM symbol and generating a plurality of demodulated symbols (306) for the first OFDM symbol: b) generating (420) decoder output code symbols (326) corresponding to a subset of the plurality of demodulated symbols; c) determining (430) that a set of (he decoder output code symbols (326) make up a set of reference symbols corresponding to at least a portion of the subset of the plurality of demodulated symbols (306); d) generating (440) the set of reference symbols; e) generating (450) a set of channel estimates (362) based on the set of reference symbols and the at least a portion of the subset of the plurality of demodulated symbols, for use in decoding a current OFDM symbol; and f) repeating steps b- e until a channel estimate for each demodulated symbol corresponding to the first OFDM symbol has been generated.

Abstract translation: 一种接收机（300），被配置用于：a）接收（410）第一OFDM符号并为所述第一OFDM符号生成多个解调符号（306）：b）产生（420）对应于 多个解调符号的子集; c）确定（430）一组（解码器输出码符号（326））构成与多个解调符号（306）的子集的至少一部分相对应的一组参考符号; d）产生（440 ）参考符号集合; e）基于参考符号集合和多个解调符号的子集的至少一部分来生成（450）一组信道估计（362），以用于解码当前OFDM符号; 以及f）重复步骤b，直到已经生成了对应于第一OFDM符号的每个解调符号的信道估计。

公开(公告)号：WO2006113119A3

公开(公告)日：2006-10-26

申请号：PCT/US2006/012408

申请日：2006-03-31

Applicant: MOTOROLA, INC. ,  FRANK, Colin, D. ,  CORKE, Robert, J. ,  JASPER, Steven, C. ,  MAKHLOUF, Isam, R.

Inventor： FRANK, Colin, D. ,  CORKE, Robert, J. ,  JASPER, Steven, C. ,  MAKHLOUF, Isam, R.

IPC: H04L23/02 ,  H04L27/28 ,  H04L5/12

Abstract: A receiver (300) configured for: a) receiving (410) a first OFDM symbol and generating a plurality of demodulated symbols (306) for the first OFDM symbol: b) generating (420) decoder output code symbols (326) corresponding to a subset of the plurality of demodulated symbols; c) determining (430) that a set of (he decoder output code symbols (326) make up a set of reference symbols corresponding to at least a portion of the subset of the plurality of demodulated symbols (306); d) generating (440) the set of reference symbols; e) generating (450) a set of channel estimates (362) based on the set of reference symbols and the at least a portion of the subset of the plurality of demodulated symbols, for use in decoding a current OFDM symbol; and f) repeating steps b- e until a channel estimate for each demodulated symbol corresponding to the first OFDM symbol has been generated.

公开(公告)号：WO2005048468A3

公开(公告)日：2006-08-17

申请号：PCT/US2004036939

申请日：2004-11-05

Applicant: INTERDIGITAL TECH CORP ,  PIETRASKI PHILIP J

Inventor： PIETRASKI PHILIP J

IPC: H03K9/00 ,  H03D1/00 ,  H04B20060101 ,  H04L5/12 ,  H04L27/08 ,  H04L27/38

CPC classification number: H04L27/3863 ,  H04L27/3809 ,  H04L27/3872

Abstract: A method and apparatus for correcting the phase and gain of data associated with a constellation pattern of a plurality of received individual symbols. Each symbol is divided into real and imaginary symbol components. The signs of the real and imaginary symbol components of each symbol are determined and used as a basis for determining whether the symbol is associated with a first or third quadrant of the constellation pattern or a second or fourth quadrant of the constellation pattern. The absolute values of the real and imaginary symbol components are determined and used to create a first sum and a second sum. A phase adjustment value ? and a gain adjustment value G are derived from the first and second sums, and are used to create a complex number. Each of the received individual symbols is multiplied by the created complex number to provide corrected constellation pattern data.

Abstract translation: 一种用于校正与多个接收的单独符号的星座图案相关联的数据的相位和增益的方法和装置。 每个符号分为实数和虚数符号分量。 确定每个符号的实数和虚符号分量的符号，并将其用作确定符号是否与星座图案的第一或第三象限或星座图案的第二或第四象限相关联的基础。 确定实数和虚数符号分量的绝对值并用于创建第一和和第二和。 相位调整值？ 并且从第一和第二和导出增益调整值G，并且用于创建复数。 将所接收的每个符号乘以所创建的复数以提供校正的星座图案数据。

公开(公告)号：WO2003061184A1

公开(公告)日：2003-07-24

申请号：PCT/US2002/036498

申请日：2002-11-12

Applicant: VIASAT, INC. ,  BLOUNT, Richard, N. ,  BECKER, Donald, W. ,  O'NEILL, John, H.

Inventor： BLOUNT, Richard, N. ,  BECKER, Donald, W. ,  O'NEILL, John, H.

IPC: H04L5/12

CPC classification number: H04L27/368 ,  H04B1/525 ,  H04B7/18517

Abstract: Self-interference cancellation (10) in two-way relayed communication is improved by creating models of upconverter and downconverter imperfections and then compensating for those imperfections before self interference cancellation processing (36). The model includes compensation for phase offset, for amplitude imbalance and for leakage in the mixers.

Abstract translation: 通过创建上变频器和下变频器缺陷的模型，然后在自干扰消除处理（36）之前补偿这些缺陷，改进了双向中继通信中的自干扰消除（10）。 该模型包括相位偏移补偿，振幅不平衡和混合器中的泄漏。

公开(公告)号：WO2003019784A3

公开(公告)日：2003-03-06

申请号：PCT/IB2002/003461

申请日：2002-08-27

Applicant: NOKIA CORPORATION ,  NOKIA INC.

Inventor： IONESCU, Dumitru, Mihai

IPC: H04L5/12

Abstract: Apparatus (26), and an associated method, for encoding digital data to be communicated by a sending station, such as a base transceiver station (12) of a cellular communication system (10). Space-time diversity is provided pursuant to the encoding, thereby to facilitate communication of data upon communication channels (18, 20) susceptible to fading conditions. A systematic, space-time, and recursive coder (28) includes a coset selecting coder for forming a coset of a multi-dimensional constellation. The coset is used by a signal point selector to select a multi-dimensional constellation point.

公开(公告)号：WO0171937A3

公开(公告)日：2002-05-23

申请号：PCT/US0108370

申请日：2001-03-15

Applicant: HARRIS CORP

Inventor： WASCHKA ALTON ,  BOYD ROBERT

IPC: H04B1/69 ,  H04J13/00 ,  H04L5/12 ,  H04L5/06 ,  H04L25/49 ,  H04L27/10

CPC classification number: H04L5/06 ,  H04B1/69 ,  H04B2001/6912 ,  H04L5/12 ,  H04L27/103

Abstract: A chirp radio communication system for increasing the number of transmitters, or users, that can be simultaneously accommodated in the communication system and the data capacity of the system without increasing frequency bandwidth. A system may include plural transmitters, receivers, and a central station for establishing chirp radio communications. Each receiver may discriminate between chirp radio transmitter types based on the differing chirp signal characteristics.

Abstract translation: 一种啁啾无线电通信系统，用于增加可以同时容纳在通信系统中的发射机或用户的数量以及系统的数据容量，而不增加频率带宽。 系统可以包括多个发射机，接收机和用于建立啁啾无线电通信的中心站。 每个接收机可以基于不同的啁啾信号特性来区分啁啾无线电发射机类型。

公开(公告)号：WO01067617A2

公开(公告)日：2001-09-13

申请号：PCT/US2001/007316

申请日：2001-03-07

IPC: H03M13/27 ,  H03M13/29 ,  H03M13/45 ,  H04L1/00 ,  H04L5/12 ,  H04L27/00 ,  H04L27/22 ,  H04L27/38 ,  H03M13/00

CPC classification number: H04L1/005 ,  H03M13/2957 ,  H03M13/3927 ,  H03M13/3961 ,  H03M13/6325 ,  H03M13/6337 ,  H03M13/65 ,  H04L1/0066 ,  H04L25/067 ,  H04L27/22 ,  H04L27/38

Abstract: A method and apparatus for computing soft decision input metrics to a turbo decoder includes circuits associated with eight-ary phase shift keyed (8PSK) modulation and sixteen-ary quadrature amplitude modulation (16QAM). In both implementations log-likelihood ratio (LLR) metrics on code symbols are estimated as products of various constant values and various combinations of the in-phase and quadrature components of a demodulated soft decision. In the implementation associated with the 16QAM modulation scheme, an estimate of the carrier-signal-to-interference (C/I) ratio is also used to estimate some of the LLR metrics. Estimates of the LLR metrics may also be obtained in association with generalized square QAM and M-ary PSK modulation schemes including, e.g., 64QAM, 256QAM, and 16PSK.

Abstract translation: 用于向turbo解码器计算软判决输入度量的方法和装置包括与八进相移键控（8PSK）调制和十六进制正交幅度调制（16QAM）相关联的电路。 在两种实现中，代码符号上的对数似然比（LLR）度量被估计为解调的软判决的各种常数值和同相和正交分量的各种组合的乘积。 在与16QAM调制方案相关联的实现中，载波信号对干扰（C / I）比的估计也用于估计一些LLR度量。 还可以与包括例如64QAM，256QAM和16PSK的广义正​​方形QAM和M元PSK调制方案相关联地获得LLR度量的估计。