公开(公告)号：US20070260958A1

公开(公告)日：2007-11-08

申请号：US11617013

申请日：2006-12-28

Applicant: Yingxue Li ,  Prabhakar Chitrapu

Inventor： Yingxue Li ,  Prabhakar Chitrapu

IPC: H03M13/29

CPC classification number: H04L1/0048 ,  H03M13/27 ,  H03M13/6362 ,  H04L1/005 ,  H04L1/0069 ,  H04L1/0071 ,  H04L1/06 ,  H04L5/0023 ,  H04L27/2626 ,  H04L27/2647

Abstract: A wireless communication method and system for performing bit-interleaved coded modulation and iterative decoding. The system includes a transmitter and a receiver. The transmitter encodes incoming bits to generate coded bits, punctures the coded bits in accordance with a predetermined puncturing pattern to generate surviving channel bits and stolen bits and interleaves the surviving bits into interleaved surviving bits. The interleaved surviving bits are mapped to channel symbols and the stolen bits are interleaved to generate interleaved stolen bits. At least one of a plurality of antennas is selected to transmit the channel symbols based on the value of the interleaved stolen bits. The receiver receives the transmitted channel symbols, estimates a posteriori probability for both the channel symbols and the stolen bits, and retrieves information of the stolen bits by determining the selected antenna used to transmit the channel symbols.

Abstract translation: 一种用于执行比特交织的编码调制和迭代解码的无线通信方法和系统。 该系统包括发射机和接收机。 发射机对输入比特进行编码以产生编码比特，根据预定的穿孔模式对编码比特进行打孔，以产生幸存的信道比特和被盗的比特，并将幸存的比特交织到交织的幸存比特中。 交织的存活比特被映射到信道符号，并且被窃取的比特被交织以产生交织的被盗的比特。 选择多个天线中的至少一个基于交织的被盗比特的值来发送信道符号。 接收机接收所发送的信道符号，估计信道符号和被盗的比特的后验概率，并且通过确定用于发送信道符号的所选择的天线来检索被盗的比特的信息。

公开(公告)号：US09319197B2

公开(公告)日：2016-04-19

申请号：US13884586

申请日：2011-11-10

Applicant: Onur Sahin ,  Jialing Li ,  Yingxue Li ,  Philip Pietraski

Inventor： Onur Sahin ,  Jialing Li ,  Yingxue Li ,  Philip Pietraski

IPC: H04L5/00 ,  H04L1/00 ,  H04L1/16 ,  H04L1/18

CPC classification number: H04L5/0055 ,  H04L1/0025 ,  H04L1/1607 ,  H04L1/18 ,  H04L2001/0097

Abstract: Techniques for inter-cell interference cancellation are disclosed. At each transmitter, the data (message) may split into two or more layers, (e.g., common and private parts), and may be encoded in different rates, allocated with different powers, possibly beamformed using different precoders, and transmitted through the same physical channels. The common part is to be decoded at both the intended and unintended users, while the private part is to be decoded at the intended user.

Abstract translation: 公开了用于小区间干扰消除的技术。 在每个发射机处，数据（消息）可以分成两个或更多个层（例如，公共和私有部分），并且可以以不同的速率被编码，分配不同的功率，可能使用不同的预编码器波束形成，并且通过相同的传输 物理频道。 公共部分将在预期用户和非预期用户两者解码，而私有部分将在预期用户处解码。

公开(公告)号：US08208574B2

公开(公告)日：2012-06-26

申请号：US12117373

申请日：2008-05-08

Applicant: Afshin Haghighat ,  Yingxue Li

Inventor： Afshin Haghighat ,  Yingxue Li

IPC: H04B7/02

CPC classification number: H04L27/28 ,  H04B1/38 ,  H04L1/0606 ,  H04L5/0023

Abstract: A method and apparatus of reducing interference in space frequency block coding (SFBC) communication are disclosed. SFBC encoding is performed on at least one pair of symbols. The symbols are assigned to subcarriers in accordance with a frequency assignment pattern assigned to a cell. Different frequency assignment patterns are assigned to neighboring cells. Cells in the network may be divided into a plurality of groups and a different frequency assignment pattern may be assigned to each group of cells. The frequency assignment pattern may be defined such that subcarriers mapped to a pair of symbols in one cell are interlaced to subcarriers mapped to a pair of symbols in a neighbor cell. Alternatively, the frequency assignment pattern may be defined such that subcarriers mapped to a pair of symbols in one cell are shifted in a neighbor cell.

Abstract translation: 公开了减少空间频率块编码（SFBC）通信中的干扰的方法和装置。 对至少一对符号执行SFBC编码。 根据分配给单元的频率分配模式，将符号分配给子载波。 不同的频率分配模式被分配给相邻小区。 网络中的小区可以被划分成多个组，并且可以将不同的频率分配模式分配给每组小区。 可以定义频率分配模式，使得映射到一个小区中的一对符号的副载波被隔行扫描到映射到相邻小区中的一对符号的副载波。 或者，可以定义频率分配模式，使得映射到一个小区中的一对符号的副载波在相邻小区中移位。

公开(公告)号：US20090122857A1

公开(公告)日：2009-05-14

申请号：US12261412

申请日：2008-10-30

Applicant: Yingxue Li ,  Donald M. Grieco ,  Robert L. Olesen

Inventor： Yingxue Li ,  Donald M. Grieco ,  Robert L. Olesen

IPC: H03K7/04 ,  H04L1/02 ,  H03K7/06

CPC classification number: H04L25/03343 ,  H04B7/0413 ,  H04B7/0478 ,  H04B7/0617 ,  H04B7/063 ,  H04L2025/03802

Abstract: Apparatus and method of generating a long term evolution (LTE) codebook and performing rank overriding are disclosed. Reordering rules are presented, whereby a second column vector of each rank-4 precoding matrix will not appear in column vectors of a rank-3 precoding matrix, and the first column vector of each rank-4 precodingmatrix is identical to the first column vector of the corresponding rank-3 precodingmatrix. Furthermore, precoder hopping between two precoding matrices corresponding to a particular precoding matrix index (PMI) is implemented, whereby a first one of the two precoding matrices comprises a first subset of column vectors of an original precoding matrix that corresponds to the particular PMI, and a second one of the two precoding matrices comprises a second subset of column vectors of the original precoding matrix. The precoder hopping is performed in time and/or frequency domain.

Abstract translation: 公开了生成长期演进（LTE）码本并执行秩超越的装置和方法。 提出了排序规则，由此每个秩-4预编码矩阵的第二列向量不会出现在秩-3预编码矩阵的列向量中，并且每个等级4预编码矩阵的第一列向量与 相应的3级预编码矩阵。 此外，实现对应于特定预编码矩阵索引（PMI）的两个预编码矩阵之间的预编码器跳变，由此两个预编码矩阵中的第一个预编码矩阵包括对应于特定PMI的原始预编码矩阵的列向量的第一子集，以及 两个预编码矩阵中的第二个包括原始预编码矩阵的列向量的第二子集。 预编码器跳频在时域和/或频域中进行。

公开(公告)号：US07515877B2

公开(公告)日：2009-04-07

申请号：US10983292

申请日：2004-11-04

Applicant: Phil F. Chen ,  Yingxue Li

Inventor： Phil F. Chen ,  Yingxue Li

IPC: H04B1/00 ,  H04B15/00 ,  H04B17/00 ,  H04B7/00 ,  H04B3/46 ,  H04Q7/00 ,  H04Q1/20

CPC classification number: H04L1/0001 ,  H04B7/0613 ,  H04L1/0026 ,  H04W52/54

Abstract: One or more quality indicators are established at a first communication device having antenna elements. The quality indicators indicate a quality of one or more communication links between the first communication device and one or more second communication devices. A modification is determined according to the quality indicators, where the modification describes at least one adjustment of one or more modulation features. A time boundary indicator indicating a boundary of a time period is received. At least some of a set of signals are modulated in accordance with the modification and in response to the time boundary indicator, where a signal is associated with an antenna element. The set of signals is sent from the antenna elements to yield a transmitted signal.

Abstract translation: 在具有天线元件的第一通信设备上建立一个或多个质量指示符。 质量指示符指示第一通信设备和一个或多个第二通信设备之间的一个或多个通信链路的质量。 根据质量指标确定修改，其中修改描述了一个或多个调制特征的至少一个调整。 接收表示时间段边界的时间边界指示符。 根据修改并响应于时间边界指示符调制一组信号中的至少一些信号，其中信号与天线元件相关联。 从天线元件发送信号集合以产生发射信号。

公开(公告)号：US07327801B2

公开(公告)日：2008-02-05

申请号：US11711630

申请日：2007-02-28

Applicant: Haim Harel ,  Yingxue Li ,  Alexander Segalovitz

Inventor： Haim Harel ,  Yingxue Li ,  Alexander Segalovitz

IPC: H04B7/02 ,  H04B7/185 ,  H04B7/00 ,  H04L27/00

CPC classification number: H04W52/221 ,  H04B7/0623 ,  H04B7/0632 ,  H04W52/16 ,  H04W52/34 ,  H04W52/42

Abstract: Communication is performed for a first communication device having a set of antenna elements. A quality-indication signal is received from a second communication device (e.g., a basestation). A complex weighting is calculated based on the quality-indication signal. A pre-transmission signal is modified based on the complex weighting to produce a set of modified-pre-transmission signals. Each modified pre-transmission signal from the set of modified-pre-transmission signals is uniquely associated with an antenna element from the set of antenna elements. The set of modified-pre-transmission signals is sent from the set of antenna elements to produce a transmitted signal. The complex weighting is associated with a total power of the transmitted power and at least one from a phase rotation and a power ratio associated with each antenna element from the set of antenna elements. For example, in CDMA based systems, a fast feedback from the basestation—the power control indication—can be used by a subscriber communication device for this transmission diversity method in such a way that provides the desired signal quality at the basestation, without necessarily responding to fading nulls by mobile unit power output increase, but rather, by manipulating the weights of the mobile transmitter antenna array. Thus, a significant reduction in average and peak mobile power level is achieved, enhancing network capacity, battery life, and radiation hazards.

Abstract translation: 对具有一组天线元件的第一通信设备执行通信。 从第二通信设备（例如，基站）接收质量指示信号。 基于质量指示信号计算复数加权。 基于复加权来修改预传输信号以产生一组经修改的预传输信号。 来自修改后的预传输信号的每个经修改的预发射信号与天线元件集合中的天线元件唯一地相关联。 经修改的预传输信号的集合从天线元件组发送以产生发射信号。 复加权与发射功率的总功率以及与来自该组天线元件的每个天线元件相关联的相位旋转和功率比中的至少一个相关联。 例如，在基于CDMA的系统中，来自基站的快速反馈（功率控制指示）可以由用户通信设备用于该传输分集方法，以便在基站提供期望的信号质量，而不必响应 通过移动单元功率输出增加而衰落零点，而是通过操纵移动发射机天线阵列的权重。 因此，实现平均和峰值移动功率水平的显着降低，增强网络容量，电池寿命和辐射危害。

公开(公告)号：US07184500B2

公开(公告)日：2007-02-27

申请号：US10334205

申请日：2002-12-30

Applicant: Yingxue Li ,  Haim Harel

Inventor： Yingxue Li ,  Haim Harel

IPC: H04B7/10 ,  H04L1/02

CPC classification number: H04B7/0857 ,  H04B1/707

Abstract: Combining signals includes receiving a plurality of groups of signals at a plurality of antennas at a mobile device, where each group of signals includes a plurality of signals, and each signal includes a time slot. The following is repeated for each group of signals of the plurality of groups of signals. An adjustment associated with a time slot of each signal is set. Each signal of the group of signals is adjusted at the time slot in accordance with the adjustment associated with the time slot. A signal quality associated with each time slot of each signal of the group of signals is established, and an optimal adjustment in accordance with the signal qualities is determined. The signals are adjusted in accordance with the optimal adjustment.

Abstract translation: 组合信号包括在移动设备处在多个天线处接收多组信号，其中每组信号包括多个信号，并且每个信号包括时隙。 对于多组信号的每组信号重复以下。 设置与每个信号的时隙相关联的调整。 根据与时隙相关联的调整，在时隙处调整信号组中的每个信号。 确定与该组信号的每个信号的每个时隙相关联的信号质量，并且确定根据信号质量的最佳调整。 信号根据最佳调整进行调整。

公开(公告)号：US20060193396A1

公开(公告)日：2006-08-31

申请号：US11345732

申请日：2006-02-02

Applicant: Yingxue Li

Inventor： Yingxue Li

IPC: H04L1/02 ,  H04L27/04

CPC classification number: H04L1/02 ,  H04B7/061

Abstract: A wireless communication system includes a transmitter comprising a serial-to-parallel converter for converting serial data bits to a parallel bit stream, a signal mapper coupled to the serial-to-parallel converter and an antenna selector coupled to the serial-to-parallel converter. The signal mapper receives as input a first group of bits from the parallel bit stream, and maps the first group of bits to a channel symbol. The antenna selector receives as input a second group of bits from the parallel bit stream. A transmit antenna array is coupled to the antenna selector and to the signal mapper. The transmit antenna array generates a plurality of transmit antenna patterns with one of the transmit antenna patterns being selected for transmitting the channel symbol based upon the second group of bits from the antenna selector.

公开(公告)号：US07917092B2

公开(公告)日：2011-03-29

申请号：US11302299

申请日：2005-12-13

Applicant: Ana Lucia Iacono ,  Arty Chandra ,  Inhyok Cha ,  John S. Chen ,  Yingxue Li ,  James C. Otto

Inventor： Ana Lucia Iacono ,  Arty Chandra ,  Inhyok Cha ,  John S. Chen ,  Yingxue Li ,  James C. Otto

IPC: H04B1/00 ,  H04B15/00 ,  H04B17/00 ,  H04M1/00 ,  H04W4/00

CPC classification number: H04B7/0608 ,  H04W16/28 ,  H04W72/046

Abstract: An apparatus and a method for improving packet transmission and reducing latency in VoIP over WLAN using switched beam antennas having multiple directional antenna beams are disclosed. In an access point having a switched beam antenna, or other smart antenna system, the present invention extends the coverage area of an access point for authentication and association of a new WTRU, extends the access points coverage area during in session transmissions with a WTRU, and adjusts data rates. The method also controls Contention Period (CP)/Contention Free Period (CFP) timing amongst beams emanating from an access point having a switched beam antenna, or other smart antenna system. Fast diversity switching, frame level switching, lowered data rates, and scanning multiple directional antenna beams for the optimum transmission beam are disclosed to improve beam selection and packet transmission.

Abstract translation: 公开了一种使用具有多个定向天线波束的切换波束天线来改善分组传输并减少VoIP中的VoIP延迟的装置和方法。 在具有切换波束天线或其它智能天线系统的接入点中，本发明扩展用于新WTRU的认证和关联的接入点的覆盖区域，在与WTRU的会话传输期间扩展接入点覆盖区域， 并调整数据速率。 该方法还控制从具有切换波束天线或其他智能天线系统的接入点发出的波束之间的竞争周期（CP）/无竞争周期（CFP）定时。 公开了快速分集切换，帧级切换，降低数据速率和扫描用于最佳传输波束的多方向天线波束，以改善波束选择和分组传输。

公开(公告)号：US07792207B2

公开(公告)日：2010-09-07

申请号：US12010655

申请日：2008-01-28

Applicant: Haim Harel ,  Yingxue Li ,  Alexander Segalovitz

Inventor： Haim Harel ,  Yingxue Li ,  Alexander Segalovitz

IPC: H04B7/02 ,  H04B7/00

CPC classification number: H04W52/221 ,  H04B7/0623 ,  H04B7/0632 ,  H04W52/16 ,  H04W52/34 ,  H04W52/42

Abstract: A mobile communication device may transmit a signal using a plurality of antenna elements, the signals differing by a transmit diversity parameter, e.g., a phase difference. The mobile communication device may receive a quality-indication signal from a basestation, e.g., a power control bit or signal. A sequence of the power control bits or signals may be used to provide feedback to the mobile communication device to determine a change in a transmit diversity parameter.

Abstract translation: 移动通信设备可以使用多个天线元件发送信号，所述信号由发射分集参数（例如，相位差）区分开。 移动通信设备可以从基站（例如，功率控制位或信号）接收质量指示信号。 可以使用功率控制位或信号的序列来向移动通信设备提供反馈以确定发射分集参数的变化。