公开(公告)号：US20050175068A1

公开(公告)日：2005-08-11

申请号：US11079305

申请日：2005-03-14

申请人： Yves-Paul Nakache ,  Andreas Molisch ,  Jinyun Zhang

发明人： Yves-Paul Nakache ,  Andreas Molisch ,  Jinyun Zhang

IPC分类号： G01S13/02 ,  H04B1/69 ,  H04L25/03

CPC分类号： H04B1/719 ,  H04B1/71632 ,  H04B1/7176 ,  H04B2001/6908 ,  H04L25/03866

摘要： A method eliminates spectral lines and shapes the power spectral density of an ultra bandwidth signal. First, a train of pulses is generated. The pulses are then modulated in time according to symbols. A polarity of the pulses is inverted randomly before transmitting the pulses as an ultra wide bandwidth signal.

摘要翻译： 一种方法消除了谱线并形成了超宽带信号的功率谱密度。 首先，产生一串脉冲。 然后根据符号在时间上调制脉冲。 在作为超宽带宽信号发送脉冲之前，脉冲的极性被随机反转。

公开(公告)号：US20050025271A1

公开(公告)日：2005-02-03

申请号：US10629240

申请日：2003-07-29

申请人： Andreas Molisch ,  Sun Kung ,  Xinying Zhang ,  Jinyun Zhang

发明人： Andreas Molisch ,  Sun Kung ,  Xinying Zhang ,  Jinyun Zhang

IPC分类号： H04J99/00 ,  H04B7/06 ,  H04B7/08 ,  H04L1/02

CPC分类号： H04B7/0874 ,  H04B7/0691 ,  H04B7/0805 ,  H04B7/0857

摘要： A method for antenna subset selection by joint processing in RF and baseband in a multi-antenna systems. Lt input data streams are generated in a transmitter for either diversity transmission or multiplexing transmission. These streams are modulated to RF signals. These signals are switched to the t branches associated with the t transmit antennas, and a phase-shift transformation is applied to the RF signals by a t×t matrix multiplication operator Φ1, whose output are t≧Lt RF signals. These signals are transmitted over a channel by t antennas. The transmitted signals are received by r antennas in a receiver. A phase-shift transformation is applied to the r RF signals by a r×r matrix multiplication operator Φ2. Lr branches of these phase shifted streams are demodulated and further processed in baseband to recover the input data streams.

摘要翻译： 一种在多天线系统中通过RF和基带中的联合处理进行天线子集选择的方法。 在用于分集发送或复用传输的发射机中生成Lt个输入数据流。 这些流被调制成RF信号。 这些信号被切换到与t个发射天线相关联的t个分支，并且通过txt矩阵乘法运算符Phi1将相移变换应用于RF信号，该输出是t> = Lt RF信号。 这些信号通过t个天线在信道上传输。 所发送的信号由接收机中的r个天线接收。 通过rxr矩阵乘法运算符Phi2对r个RF信号进行相移变换。 这些相移流的Lr分支被解调并在基带中进一步处理以恢复输入数据流。

公开(公告)号：US09025471B2

公开(公告)日：2015-05-05

申请号：US12415578

申请日：2009-03-31

申请人： Neelesh B. Mehta ,  Koon Hoo Teo ,  Jinyun Zhang

发明人： Neelesh B. Mehta ,  Koon Hoo Teo ,  Jinyun Zhang

IPC分类号： H04B1/00 ,  H04B1/713 ,  H04B7/06 ,  H04B1/38

CPC分类号： H04B1/713 ,  H04B1/38 ,  H04B7/061

摘要： The embodiments of the invention describe a method for antenna selection in a wireless communication network. The network includes a transceiver having a set of antennas. The transceiver is configured to transmit a frequency-hopped sounding reference signal (SRS) over a subband from a subset of antennas at a time. The transceiver transmits the frequency-hopped SRS from subsets of antennas in the set of antennas alternately. In response to the transmitting, the transceiver receives information indicative of an optimal subset of antennas and transmits data from the optimal subset of antennas.

摘要翻译： 本发明的实施例描述了一种在无线通信网络中进行天线选择的方法。 该网络包括具有一组天线的收发器。 收发器被配置为一次从天线子集在子带上发射跳频探测参考信号（SRS）。 收发器交替地在天线集合中的天线子集中发送跳频SRS。 响应于发送，收发器接收指示天线的最佳子集的信息，并从最佳天线子集发射数据。

公开(公告)号：US08824420B2

公开(公告)日：2014-09-02

申请号：US11953452

申请日：2007-12-10

申请人： Neelesh B. Mehta ,  Erdem Bala ,  Jinyun Zhang

发明人： Neelesh B. Mehta ,  Erdem Bala ,  Jinyun Zhang

IPC分类号： H04W4/00 ,  H04B1/44

CPC分类号： H04B7/061 ,  H04B7/0691 ,  H04L5/0023 ,  H04L25/0204 ,  H04L25/0228

摘要： A method and system generating signal to select a subset of antennas from a set of antennas to transmit user data in a wireless communication system. User data are transmitted during a first transmission time intervals (TTI) using a first subset of antennas. Pilot tones are transmitted during a second TTI using a second subset of antennas. Corresponding channels are estimated for the first subset of antennas and the second subset of antennas from the user data and the pilot tones. Then, based on the estimating, an optimal subset of antenna is selected from the first subset of antennas and the second subset of antennas to transmit the user data during a sequent TTI, and in which the selecting is performed adaptively.

摘要翻译： 一种方法和系统产生信号以从一组天线中选择天线的子集以在无线通信系统中传送用户数据。 在第一传输时间间隔（TTI）期间使用第一天线子集来发送用户数据。 在第二TTI期间使用第二天线子集来传送导频音调。 对于天线的第一子集和来自用户数据和导频音调的第二子天线子集估计相应的信道。 然后，基于估计，从第一天线子集和第二天线子集中选择天线的最佳子集，以便在后续TTI期间发送用户数据，并且其中选择被自适应地执行。

公开(公告)号：US08571003B2

公开(公告)日：2013-10-29

申请号：US12193911

申请日：2008-08-19

申请人： Jianlin Guo ,  Chunjie Duan ,  Ghulam M. Bhatti ,  Jinyun Zhang

发明人： Jianlin Guo ,  Chunjie Duan ,  Ghulam M. Bhatti ,  Jinyun Zhang

IPC分类号： H04B7/212 ,  H04J3/00 ,  H04J3/17

CPC分类号： H04W72/0446 ,  H04B7/2656 ,  H04W48/08 ,  H04W74/02 ,  H04W84/12

摘要： A method for transmitting information in a communication network of multiple nodes, in which information transmission is partitioned into successive superframes, and in which each superframe is partitioned into a beacon period followed by a data period, which may consist of a contention free period (CFP), and each beacon period and CFP of the data period is partitioned into timeslots. The method includes allocating to at least a first node of the multiple nodes a designated timeslot in which to transmit data in at least one of a plurality of superframes, and allocating to at least a second node of the multiple nodes the same designated timeslot in which to transmit information during at least one subsequent superframe.

摘要翻译： 一种用于在多个节点的通信网络中发送信息的方法，其中信息传输被划分为连续的超帧，并且其中每个超帧被划分成信标周期，随后是数据周期，数据周期可以包括无争用周期（CFP ），并且将数据周期的每个信标周期和CFP划分为时隙。 该方法包括向多个节点中的至少第一节点分配指定时隙，在多个节点中的至少一个超帧中发送数据，并且向多个节点的至少第二节点分配相同的指定时隙，其中 以在至少一个后续超帧期间传送信息。

公开(公告)号：US08369379B2

公开(公告)日：2013-02-05

申请号：US12453685

申请日：2009-05-19

申请人： Zhenzhen Ye ,  Chunjie Duan ,  Philip Orlik ,  Jinyun Zhang

发明人： Zhenzhen Ye ,  Chunjie Duan ,  Philip Orlik ,  Jinyun Zhang

IPC分类号： H04B1/7156 ,  H04L27/28 ,  H04J4/00

CPC分类号： H04J3/0608

摘要： Synchronization methods and systems for communications over a multi-band system are presented. A synchronization technique for communications over a multi-band system includes receiving a packet of preamble symbols respectively transmitted over a sequence of frequency sub-bands according to one of a plurality of frequency hopping patterns, wherein the plurality of frequency hopping patterns are partitioned into a plurality of disjoint groups, each group having a different associated periodicity; computing, in parallel, respective autocorrelation values of the packet received in a selected frequency sub-band at a plurality of symbol delays; and selecting one of the plurality of groups of frequency hopping patterns based on the autocorrelation values at the plurality of symbol delays.

公开(公告)号：US08238868B2

公开(公告)日：2012-08-07

申请号：US11755903

申请日：2007-05-31

申请人： Chunjie Duan ,  Sinan Gezici ,  Jinyun Zhang ,  Rajesh Garg

发明人： Chunjie Duan ,  Sinan Gezici ,  Jinyun Zhang ,  Rajesh Garg

IPC分类号： H04B1/16 ,  H04B1/04 ,  H04B7/00 ,  H04B1/38 ,  H04B7/212 ,  G05F1/577 ,  G05F1/38 ,  G05F3/02 ,  B23K11/24 ,  H03L5/00 ,  H03K5/08 ,  H03G3/20 ,  H03G3/10 ,  G08B5/22 ,  H04Q1/30 ,  G08C17/00 ,  H04L5/16 ,  H04L27/06

CPC分类号： H04B1/1607 ,  G01R33/0029 ,  G01R33/072 ,  H04B1/40 ,  H04W52/0216 ,  H04W52/0232 ,  Y02D70/12 ,  Y02D70/142 ,  Y02D70/40

摘要： A dynamic voltage scaling system for a packet-based data communication transceiver includes a constant voltage supply, a variable voltage supply, and a voltage control unit. The constant voltage supply is configured to supply a constant voltage to at least one parameter-independent function of the transceiver, and the variable voltage supply is configured to supply a variable voltage in accordance with a control signal to at least one parameter-dependent function of the transceiver. Parameter-independent transceiver functions perform operations independent of a predetermined parameter and parameter-dependent transceiver functions perform operations dependent on the predetermined parameter The voltage control unit is configured to generate the control signal based on information provided by at least one parameter-independent transceiver function about the predetermined parameter.

摘要翻译： 用于基于分组的数据通信收发器的动态电压缩放系统包括恒定电压源，可变电压源和电压控制单元。 恒压源被配置为向收发器的至少一个独立于参数的功能提供恒定电压，并且可变电压源被配置为根据控制信号将可变电压提供给至少一个参数相关函数 收发器。 独立于参数的收发机功能执行独立于预定参数的操作，并且参数相关收发器功能执行取决于预定参数的操作。电压控制单元被配置为基于由至少一个与参数无关的收发器功能提供的信息来生成控制信号 预定参数。

公开(公告)号：US08228858B2

公开(公告)日：2012-07-24

申请号：US12495207

申请日：2009-06-30

申请人： Koon Hoo Teo ,  Neelesh B. Mehta ,  Jinyun Zhang

发明人： Koon Hoo Teo ,  Neelesh B. Mehta ,  Jinyun Zhang

IPC分类号： H04W4/00

CPC分类号： H04B7/061 ,  H04B7/0691 ,  H04L5/0023 ,  H04L25/0204 ,  H04L25/0228

摘要： Embodiments of the invention describe a method for antenna selection (AS) in a wireless communication network, the network comprising user equipment (UE), wherein the UE comprises a plurality of subsets of antennas including a selected subset of antennas and an unselected subset of antennas, wherein only the selected subset of antennas is used for transmitting user data, and wherein the UE is configured to transmit only from a subset of antennas at a time. The method transmits the user data from the selected subset of antennas within a set of subframes, and transmits a sounding reference signal (SRS) from the unselected subset of antennas within at least one subframe in the set of subframes to enable antenna selection for user data transmission.

摘要翻译： 本发明的实施例描述了一种用于无线通信网络中的天线选择（AS）的方法，所述网络包括用户设备（UE），其中，所述UE包括多个天线子集，所述多个天线子集包括选定的天线子集和未选择的天线子集 ，其中仅选择的所述天线子集用于发送用户数据，并且其中所述UE被配置为一次只从所述天线子集发射。 该方法从一组子帧内的所选择的天线子集中发送用户数据，并且在该组子帧内的至少一个子帧内从未被选择的天线子集发射探测参考信号（SRS），以使能用于用户数据的天线选择 传输。

公开(公告)号：US20120170684A1

公开(公告)日：2012-07-05

申请号：US12982636

申请日：2010-12-30

申请人： Raymond Yim ,  Amitav Mukherjee ,  Philip V. Orlik ,  Chunjie Duan ,  Jinyun Zhang

发明人： Raymond Yim ,  Amitav Mukherjee ,  Philip V. Orlik ,  Chunjie Duan ,  Jinyun Zhang

IPC分类号： H04B1/06

CPC分类号： H04L25/0204 ,  H04L25/0228 ,  H04L25/03159

摘要： A method estimates a wireless channel at a receiver. The signal is transmitted using narrowband orthogonal frequency division demultiplexing (OFDM) and frequency subcarriers, and the signal includes a set of data tones and a set of pilot tones. The channel and pilot tone interference are estimated based on all the pilot tones extracted from the signal and a channel model. The set of data are equalized based on the channel estimate. Data interference is detected according to the pilot interference and the equalized data tones. Subcarrier interference-to-noise ratios are determined based on the data interference. Signal strengths of the data tones are determined based on the equalized data tones, log-likelihood ratios of bits represented by the data tones are determined based on the subcarrier interference-to-noise ratios and the signal strength of the data tones.

摘要翻译： 一种方法估计接收机处的无线信道。 该信号使用窄带正交频分解复用（OFDM）和频率副载波来发送，并且该信号包括一组数据音调和一组导频音。 基于从信号提取的所有导频音和信道模型来估计信道和导频音干扰。 该数据集合基于信道估计来均衡。 根据导频干扰和均衡数据音调检测数据干扰。 基于数据干扰确定子载波干扰噪声比。 基于均衡的数据音调确定数据音调的信号强度，基于副载波干扰信噪比和数据音调的信号强度来确定由数据音调表示的比特的对数似然比。

公开(公告)号：US08139668B2

公开(公告)日：2012-03-20

申请号：US12503465

申请日：2009-07-15

申请人： Philip V. Orlik ,  Lu Zhang ,  Raymond Yim ,  Jinyun Zhang

发明人： Philip V. Orlik ,  Lu Zhang ,  Raymond Yim ,  Jinyun Zhang

IPC分类号： H04L5/12 ,  H04B7/02 ,  H03C7/02

CPC分类号： H04L1/065 ,  H04L1/0003 ,  H04L25/0212 ,  H04L25/0226

摘要： A transmitter encodes an input bitstream using space-time trellis coding (STTC). The encoder includes a serial to parallel convertor to produce a first and second output bitstreams. First and second three bit shift registers are connected to produce first and second output bitstreams. A multiplier applies a code generating weight to each bit of the shift registers to encode the bitstreams. A first switch is connected between a last bit of the first shift register and a first bit of the second shift register. A second switch is connected between the second output and the first bit of the second shift register. The first set of encoded bit streams and the second set of encoded bitstreams are combined and mapped to a frequency domain.

摘要翻译： 发射机使用空时网格编码（STTC）对输入比特流进行编码。 编码器包括串行到并行转换器以产生第一和第二输出比特流。 连接第一和第二三位移位寄存器以产生第一和第二输出比特流。 乘法器将代码生成权重应用于移位寄存器的每个位以对比特流进行编码。 第一开关连接在第一移位寄存器的最后位和第二移位寄存器的第一位之间。 第二开关连接在第二输出端和第二移位寄存器的第一位之间。 第一组编码比特流和第二组编码比特流被组合并映射到频域。