公开(公告)号：WO2007106366A2

公开(公告)日：2007-09-20

申请号：PCT/US2007005921

申请日：2007-03-07

Applicant: INTERDIGITAL TECH CORP ,  PAH JUNG-LIN ,  GRIECO DONALD M ,  SHAH NIRAV ,  OLESEN ROBERT L

Inventor： PAH JUNG-LIN ,  GRIECO DONALD M ,  SHAH NIRAV ,  OLESEN ROBERT L

IPC: H04L25/03 ,  H04B7/06

CPC classification number: H04L25/067 ,  H04B7/0689 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0606 ,  H04L1/0625 ,  H04L1/0631 ,  H04L1/0643 ,  H04L1/065 ,  H04L1/0668 ,  H04L5/023 ,  H04L25/03318 ,  H04L27/2647

Abstract: A method and apparatus for scaling a soft bit for decoding in a wireless communication system are described. A scaling factor is calculated for a received symbol based'on an estimated signal-to-noise ratio (SNR) of the received symbol and the scaling factor is applied to a soft bit of the received symbol. A multiple-input multiple-output (MIMO) scheme may be implemented to transmit multiple data streams. In such case, a soft bit of a received symbol on each data stream is scaled by a scaling factor for the received symbol on each data stream.

Abstract translation: 描述用于在无线通信系统中缩放用于解码的软比特的方法和装置。 基于接收符号的估计信噪比（SNR），基于接收符号计算缩放因子，并且缩放因子被应用于接收符号的软比特。 可以实现多输入多输出（MIMO）方案来传输多个数据流。 在这种情况下，在每个数据流上的接收符号的软比特被缩放为每个数据流上的接收符号的缩放因子。

公开(公告)号：WO2007078712A3

公开(公告)日：2007-08-23

申请号：PCT/US2006047327

申请日：2006-12-12

Applicant: INTERDIGITAL TECH CORP ,  CHEN JOHN S ,  OLESEN ROBERT L ,  ZHANG GUODONG ,  SHIN SUNG-HYUK ,  LIM JUNSUNG ,  CHANDRA ARTY ,  GRANDHI SUDHEER A

Inventor： CHEN JOHN S ,  OLESEN ROBERT L ,  ZHANG GUODONG ,  SHIN SUNG-HYUK ,  LIM JUNSUNG ,  CHANDRA ARTY ,  GRANDHI SUDHEER A

IPC: H04L27/26

CPC classification number: H04L5/0007 ,  H04L1/0026 ,  H04L5/0037 ,  H04L5/0048 ,  H04L5/006 ,  H04L5/0085 ,  H04L25/022 ,  H04L25/0226 ,  H04L25/0232 ,  H04W72/08

Abstract: In an orthogonal frequency division multiple access (OFDMA) system including at least one base station and at least one wireless transmit/receive unit (WTRU), sub-carriers are allocated for data transmissions to multiple access WTRUs, where sub-carriers are allocated according to a consecutive sub-carrier allocation (CSA) type and a distributed sub-carrier allocation (DSA) type. Pilot signals with distributed pilot sub-carriers are transmitted and measured at each WTRU to obtain a channel quality metric for each pilot sub-carrier. Each WTRU sends feedback to the base station reporting channel quality based on the measured channel quality metrics. An allocation type is selected and adaptively switched according to channel variations in time and frequency domain.

Abstract translation: 在包括至少一个基站和至少一个无线发射/接收单元（WTRU）的正交频分多址（OFDMA）系统中，分配了用于向多个接入WTRU进行数据传输的子载波，其中根据 连续的子载波分配（CSA）类型和分布式子载波分配（DSA）类型。 在每个WTRU处，发射和测量具有分布式导频子载波的导频信号，以获得每个导频子载波的信道质量度量。 每个WTRU基于所测量的信道质量度量向基站报告信道质量的反馈。 根据时域和频域的频道变化选择分配类型并进行自适应切换。

公开(公告)号：WO2008157620A3

公开(公告)日：2009-02-12

申请号：PCT/US2008067372

申请日：2008-06-18

Applicant: INTERDIGITAL TECH CORP ,  PAN KYLE JUNG-LIN ,  GRIECO DONALD M ,  OLESEN ROBERT L

Inventor： PAN KYLE JUNG-LIN ,  GRIECO DONALD M ,  OLESEN ROBERT L

IPC: H04L25/03 ,  H04B7/04

CPC classification number: H04L25/03343 ,  H04B7/0417 ,  H04B7/0465 ,  H04B7/0639 ,  H04B7/0641 ,  H04B7/065 ,  H04B7/066 ,  H04L2025/03426 ,  H04L2025/03802

Abstract: A method and apparatus for constraining power amplifier (PA) imbalance includes using a constant modulus (CM) criterion to ensure PA balance whe using differential feedback. An approach of combined differential and non- differential feedback is considered.

Abstract translation: 用于约束功率放大器（PA）不平衡的方法和装置包括使用恒模（CM）准则来确保使用差分反馈的PA平衡。 考虑组合差分和非差分反馈的方法。

公开(公告)号：WO2008157167A2

公开(公告)日：2008-12-24

申请号：PCT/US2008066526

申请日：2008-06-11

Applicant: INTERDIGITAL TECH CORP ,  BALA ERDEM ,  PAN KYLE JUNG-LIN ,  OLESEN ROBERT L

Inventor： BALA ERDEM ,  PAN KYLE JUNG-LIN ,  OLESEN ROBERT L

IPC: H04B7/06

CPC classification number: H04B7/0452 ,  H04B7/0408 ,  H04B7/0417 ,  H04B7/0465 ,  H04B7/0617 ,  H04B7/0632 ,  H04B7/0634 ,  H04B7/0639 ,  H04B7/0663

Abstract: A method and apparatus generates a codebook and associated scheduling and control signaling. A plurality of channel combinations is generated for a plurality of wireless transmit receive units (WTRUs). The channel for each WTRU is quantized based on the WTRU codebook. A codebook for beamforming is generated for a plurality of WTRUs. The codebook includes a plurality of beamforming matrices. All possible beamforming matrices may be computed and the codebook may be quantized.

Abstract translation: 方法和装置产生码本和相关的调度和控制信令。 为多个无线发射接收单元（WTRU）生成多个信道组合。 每个WTRU的信道基于WTRU码本量化。 为多个WTRU生成用于波束成形的码本。 码本包括多个波束形成矩阵。 可以计算所有可能的波束形成矩阵，并且可以量化码本。

公开(公告)号：WO2008021392A3

公开(公告)日：2008-10-23

申请号：PCT/US2007018060

申请日：2007-08-15

Applicant: INTERDIGITAL TECH CORP ,  MYUNG HYUNG G ,  PAN KYLE JUNG-LIN ,  OLESEN ROBERT L ,  GRIECO DONALD M

Inventor： MYUNG HYUNG G ,  PAN KYLE JUNG-LIN ,  OLESEN ROBERT L ,  GRIECO DONALD M

IPC: H04L27/26 ,  H04B7/06

CPC classification number: H04L27/2614 ,  H04B7/0639 ,  H04B7/066 ,  H04L25/0204 ,  H04L27/2623 ,  H04L27/2624

Abstract: A method and apparatus for reducing a peak-to-average power ratio (PAPR) in a multiple-input multiple-output (MIMO) wireless communication system are disclosed. Transmit beamforming or precoding is performed on transmit symbols based on a channel matrix. For feedback, channel matrices may be averaged over multiple subcarriers and the averaged channel matrices may be further quantized. In order to reduce the PAPR, amplitude clipping may be performed on the symbols after the transmit processing. The amplitude clipping may be performed by hard clipping, soft clipping, or smooth clipping.

Abstract translation: 公开了一种用于降低多输入多输出（MIMO）无线通信系统中的峰均功率比（PAPR）的方法和装置。 基于信道矩阵对发射符号执行发射波束形成或预编码。 对于反馈，信道矩阵可以在多个子载波上被平均，并且平均的信道矩阵可以被进一步量化。 为了降低PAPR，可以在发送处理之后对码元执行幅度限幅。 幅度限幅可以通过硬限幅，软限幅或平滑限幅来执行。

公开(公告)号：WO2007081977A3

公开(公告)日：2008-02-14

申请号：PCT/US2007000579

申请日：2007-01-10

Applicant: INTERDIGITAL TECH CORP ,  OLESEN ROBERT L ,  ZEIRA ELDAD M ,  VOLTZ PETER J ,  YANG YONGWEN ,  DAI QINGYUAN ,  KOO CHANG-SOO ,  LU I-TAI ,  TSAI KUNJUN

Inventor： OLESEN ROBERT L ,  ZEIRA ELDAD M ,  VOLTZ PETER J ,  YANG YONGWEN ,  DAI QINGYUAN ,  KOO CHANG-SOO ,  LU I-TAI ,  TSAI KUNJUN

IPC: H04L1/00 ,  H04B7/06 ,  H04L1/06

CPC classification number: H04L1/0643 ,  H04B7/0456 ,  H04B7/0619 ,  H04B7/0626 ,  H04B7/0669 ,  H04B7/0697 ,  H04B7/0837 ,  H04B7/0891 ,  H04B17/336 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0606 ,  H04L1/0625 ,  H04L1/0631 ,  H04L27/2626 ,  H04L27/2647 ,  H04W84/12

Abstract: A method and apparatus for implementing spatial processing with unequal modulation and coding schemes (MCSs) or stream-dependent MCSs are disclosed. Input data may be parsed into a plurality of data streams, and spatial processing is performed on the data streams to generate a plurality of spatial streams. An MCS for each data stream is selected independently. The spatial streams are transmitted via multiple transmit antennas. At least one of the techniques of space time block coding (STBC), space frequency block coding (SFBC), quasi-orthogonal Alamouti coding, time reversed space time block coding, linear spatial processing and cyclic delay diversity (CDD) may be performed on the data/spatial streams. An antennal mapping matrix may then be applied to the spatial streams. The spatial streams are transmitted via multiple transmit antennas. The MCS for each data stream may be determined based on a signal-to-noise ratio of each spatial stream associated with the data stream.

Abstract translation: 公开了一种用于实现具有不等调制和编码方案（MCS）或流依赖MCS的空间处理的方法和装置。 输入数据可以被解析成多个数据流，并且对数据流执行空间处理以产生多个空间流。 独立地选择每个数据流的MCS。 空间流通过多个发射天线发射。 可以对空间时间块编码（STBC），空间频率块编码（SFBC），准正交Alamouti编码，时间反转空间时间块编码，线性空间处理和循环延迟分集（CDD）的技术中的至少一种进行 数据/空间流。 然后可以将天线映射矩阵应用于空间流。 空间流通过多个发射天线发射。 可以基于与数据流相关联的每个空间流的信噪比来确定每个数据流的MCS。

公开(公告)号：WO2005034406A2

公开(公告)日：2005-04-14

申请号：PCT/US2004029146

申请日：2004-09-08

Applicant: INTERDIGITAL TECH CORP ,  ZEIRA ELDAD ,  GRIECO DONALD M ,  OLESEN ROBERT L ,  ZEIRA ARIELA ,  PAN JUNG-LIN ,  BULTAN AYKUT

Inventor： ZEIRA ELDAD ,  GRIECO DONALD M ,  OLESEN ROBERT L ,  ZEIRA ARIELA ,  PAN JUNG-LIN ,  BULTAN AYKUT

IPC: H01Q1/24 ,  H01Q3/26 ,  H01Q25/00 ,  H04B1/02 ,  H04B1/38 ,  H04B7/02 ,  H04B7/08 ,  H04B15/00 ,  H04B17/00 ,  H04L20060101 ,  H04M1/00 ,  H04M7/14 ,  H04Q7/20 ,  H04L

CPC classification number: H01Q1/246 ,  H01Q3/2605 ,  H01Q25/00 ,  H04B7/088

Abstract: A method and system is disclosed for enhancing reception of wireless communication signals. A beam pattern including at least one set of beams is generated. Where the beam pattern includes at least two sets of beams, the beam sets may be offset with respect to each other and alternated to enhance reception. Beams may be selected for data processing based on a signal-to-noise ratio (SNR) and may be maximal-ratio combined where signals from a single WTRU are detected within more than one beam and are used for data processing.

Abstract translation: 公开了一种用于增强无线通信信号的接收的方法和系统。 产生包括至少一组光束的光束图案。 在波束图案包括至少两组波束的情况下，波束组可以相对于彼此偏移并交替以增强接收。 可以基于信噪比（SNR）来选择光束进行数据处理，并且可以在多个波束内检测来自单个WTRU的信号并将其用于数据处理的情况下进行最大比组合。

公开(公告)号：WO0232018A3

公开(公告)日：2002-08-29

申请号：PCT/US0131612

申请日：2001-10-10

Applicant: INTERDIGITAL TECH CORP

Inventor： OLESEN ROBERT L ,  AXNESS TIMOTHY A ,  KAZAKEVICH LEONID

IPC: H04L5/16 ,  H03G3/20 ,  H03M1/18 ,  H04B1/16 ,  H04B1/707 ,  H04B7/005 ,  H04B17/00 ,  H04J3/00 ,  H04L5/14 ,  H04B7/26

CPC classification number: H04W52/52 ,  H03G3/3078 ,  H03M1/185 ,  H04B17/318 ,  H04L5/1484

Abstract: A method and system for automatic gain control (AGC) in a TDD communication system, wherein each time slot of the communication signal contains a preamble in binary phase shift keying (BPSK) format, located at the beginning of the time slot. The channel estimation by the receiver is improved since the preamble allows AGC to quickly estimate the signal strength and adjust the gain accordingly. This permits all data symbols within the data burst, which follows the preamble, to be correctly received, and results in a midamble channel estimate that is much more accurate. It also allows the AGC circuit within the TDD receiver to be greatly simplified.

Abstract translation: 一种用于TDD通信系统中的自动增益控制（AGC）的方法和系统，其中通信信号的每个时隙包含位于时隙开头的二进制相移键控（BPSK）格式的前导码。 由于前同步码允许AGC快速估计信号强度并相应地调整增益，所以改善了接收机的信道估计。 这允许正确地接收跟随前导码的数据突发内的所有数据符号，并且导致更准确的中间码信道估计。 它还允许TDD接收机内的AGC电路大大简化。

公开(公告)号：PL2464176T3

公开(公告)日：2020-03-31

申请号：PL12158263

申请日：2008-03-07

Applicant: INTERDIGITAL TECH CORP

Inventor： SHIN SUNG-HYUK ,  LIN ZINAN ,  GRIECO DONALD M ,  OLESEN ROBERT L

IPC: H04W52/08 ,  H04W52/10 ,  H04W52/14 ,  H04W52/24

公开(公告)号：DK2080282T3

公开(公告)日：2020-02-24

申请号：DK07838886

申请日：2007-09-26

Applicant: INTERDIGITAL TECH CORP

Inventor： SHIN SUNG-HYUK ,  GRIECO DONALD M ,  OLESEN ROBERT L

IPC: H04W52/08 ,  H04L5/00 ,  H04W52/10 ,  H04W52/14 ,  H04W52/24 ,  H04W52/26 ,  H04W52/28