公开(公告)号：US07164720B2

公开(公告)日：2007-01-16

申请号：US10426576

申请日：2003-04-30

申请人： Andreas Molisch ,  Sinan Gezici ,  Hisashi Kobayashi ,  H. Vincent Poor

发明人： Andreas Molisch ,  Sinan Gezici ,  Hisashi Kobayashi ,  H. Vincent Poor

IPC分类号： H04L27/00

CPC分类号： H04B1/7183

摘要： A method and system acquire a received impulse radio signal by correlating a region, including a plurality of cells, of the received impulse radio signal using multiple time-shifted template signals, each template signal having a different delay to obtain a correlation value for each template signal. The correlation values are averages, and a particular delay associated with a particular template signal having a substantial increase in successive averages to locate a signal cell in the region.

摘要翻译： 一种方法和系统通过使用多个时移模板信号将接收到的脉冲无线电信号的包括多个小区的区域相关联来获取接收到的脉冲无线电信号，每个模板信号具有不同的延迟以获得每个模板的相关值 信号。 相关值是平均值，以及与特定模板信号相关联的特定延迟，其具有连续平均值的显着增加以定位该区域中的信号单元。

公开(公告)号：US20060209924A1

公开(公告)日：2006-09-21

申请号：US11029135

申请日：2005-01-04

申请人： Andreas Molisch ,  Philip Orlik

发明人： Andreas Molisch ,  Philip Orlik

IPC分类号： H04B1/00

CPC分类号： H04B1/71637 ,  H04B1/71635 ,  H04B1/7172 ,  H04B2201/71636

摘要： A method determines a delay time between reference and data pulses in a time-hopping impulse radio system. Channel state information of a channel between two transceivers is estimated periodically. The delay time frame between the reference and data pulses is then determined according to the channel state information.

公开(公告)号：US20060146915A1

公开(公告)日：2006-07-06

申请号：US10847072

申请日：2004-05-17

申请人： Sinan Gezici ,  Andreas Molisch ,  Hisashi Kobayashi ,  H. Poor

发明人： Sinan Gezici ,  Andreas Molisch ,  Hisashi Kobayashi ,  H. Poor

IPC分类号： H04B1/69

CPC分类号： H04B1/71637 ,  H04B2001/6908

摘要： In a time-hopped impulse radio system, each symbol is transmitted over a channel having different multipath components as a set of Nf frames. Each frame includes one pulse. All frames of a received signal corresponding to the symbol are sampled to generate Nfa×L samples, where L is the number of samples for each frame. Then, the Nfa×L samples are combined according to a minimum mean square error criterion to obtain a decision variable corresponding to the symbol.

摘要翻译： 在时间跳跃的无线电系统中，每个符号通过具有不同多路径分量的信道作为一组N帧帧发送。 每帧包括一个脉冲。 对与该符号相对应的接收信号的所有帧进行采样以产生N×L×L个采样，其中L是每帧的样本数。 然后，根据最小均方误差准则组合N个样本，以获得对应于该符号的判定变量。

公开(公告)号：US07324604B2

公开(公告)日：2008-01-29

申请号：US10602743

申请日：2003-06-24

申请人： Andreas Molisch ,  Yunnan Wu ,  Sun Y. Kung

发明人： Andreas Molisch ,  Yunnan Wu ,  Sun Y. Kung

IPC分类号： H04K1/02

CPC分类号： H04B1/7172

摘要： A method and system shapes a spectrum of an impulse radio signal, such as an UWB signal. First, basis pulses at various frequencies and pseudo-random delays are generated. The generated set of basis pulses are then weighted and delayed, and combined linearly to conform the spectrum of the transmitted basis pulses to a spectral mask. The spectral mask can be predetermined, or the conforming can be adaptive. Furthermore, the basis pulses can be frequency-shifted before the combining.

摘要翻译： 一种方法和系统对诸如UWB信号的脉冲无线电信号的频谱进行整形。 首先，生成各种频率的基本脉冲和伪随机延迟。 所生成的基准脉冲集合然后被加权和延迟，并且线性地组合以使所发送的基本脉冲的频谱符合频谱掩模。 光谱掩模可以是预定的，或者符合可以是自适应的。 此外，基准脉冲可以在组合之前进行频移。

公开(公告)号：US07154956B2

公开(公告)日：2006-12-26

申请号：US10624771

申请日：2003-07-22

申请人： Andreas Molisch ,  Yves-Paul Nakache

发明人： Andreas Molisch ,  Yves-Paul Nakache

IPC分类号： H04K1/10 ,  H04L27/14

CPC分类号： H04L27/261 ,  H04L27/2647

摘要： An OFDM receiver detects FSK symbols in a communications network. An FFT has an input connected to receive temporal samples of a received, frequency-hopped FSK signal. Outputs of the FFT represent the FSK signal in a frequency domain. The outputs are grouped according to predetermined frequencies assigned by a transmitter of the FSK signal. An energy for each group of outputs is determined, and the energies of each group are then compared to recover a data stream from the FSK signal.

摘要翻译： OFDM接收机检测通信网络中的FSK符号。 FFT具有连接的输入以接收接收的跳频FSK信号的时间采样。 FFT的输出表示频域中的FSK信号。 输出根据由FSK信号的发射机分配的预定频率进行分组。 确定每组输出的能量，然后比较每组的能量以从FSK信号中恢复数据流。

公开(公告)号：US20060274847A1

公开(公告)日：2006-12-07

申请号：US11127006

申请日：2005-05-11

申请人： Andreas Molisch ,  Jianxuan Du ,  Daqing Gu

发明人： Andreas Molisch ,  Jianxuan Du ,  Daqing Gu

IPC分类号： H04L1/02

CPC分类号： H04B7/0691 ,  H04B7/02 ,  H04B7/0874

摘要： A method transmits transmitting training frames in a MIMO system. A long sequence of training frames is transmitted from a station B to a station A via a channel of the MIMO system, in which the station A includes NA antennas and N—SS RF chains and the station B includes NB antennas and NB—SS RF chains, and a number of frames in the long sequence of training frames is at least equal to A short sequence of training frames is transmitted from the station A to the station B via the channel in response to receiving the long sequence of training frames. A number of frames in the short training sequence is at least equal to

摘要翻译： 一种在MIMO系统中发送训练帧的方法。 训练帧的长序列经由MIMO系统的信道从站B发送到站A，其中，站A包括NA天线，并且N - SUB> SS RF链，并且站B包括N个B个天线和N B个天线，并且N B个< SUB> SS RF链，并且训练帧的长序列中的多个帧至少等于A响应于接收，经由信道从站A向站B发送短序列的训练帧 训练框架的长序列。 短训练序列中的多个帧至少等于

公开(公告)号：US20060104387A1

公开(公告)日：2006-05-18

申请号：US10988764

申请日：2004-11-15

申请人： Zafer Sahinoglu ,  Sinan Gezici ,  Andreas Molisch

发明人： Zafer Sahinoglu ,  Sinan Gezici ,  Andreas Molisch

IPC分类号： H04L27/06

CPC分类号： H04B1/7183

摘要： A method estimates a time of arrival of a signal received in a wireless communication system. An energy in a frame of a received signal is measured to determine a block in the frame, the block representing a coarse time of arrival of the received signal. Multiple time-delayed versions of a template signal are combined with the block of the received signal to select a particular template signal. The particular template signal identifies a particular chip representing a fine time of arrival of the received signal.

摘要翻译： 方法估计在无线通信系统中接收的信号的到达时间。 测量接收信号的帧中的能量以确定帧中的块，该块表示接收信号的粗略到达时间。 模板信号的多个时间延迟版本与接收信号的块组合以选择特定的模板信号。 特定模板信号识别表示接收信号的精确到达时间的特定芯片。

公开(公告)号：US08725102B2

公开(公告)日：2014-05-13

申请号：US12912399

申请日：2010-10-26

申请人： Jack Harriman Winters ,  Yang-Seok Choi ,  Byoung-Jo J. Kim ,  Andreas Molisch ,  Moe Z. Win ,  Hui Lo

发明人： Jack Harriman Winters ,  Yang-Seok Choi ,  Byoung-Jo J. Kim ,  Andreas Molisch ,  Moe Z. Win ,  Hui Lo

IPC分类号： H04B1/06 ,  H04B7/00

CPC分类号： H04B7/0822 ,  H04B1/1027 ,  H04B7/0413 ,  H04B7/046 ,  H04B7/0814 ,  H04B7/0854 ,  H04B7/0874 ,  H04J11/0063 ,  H04L5/0023

摘要： A method of performing receive antenna selection is presented. The method executes a determination operation for a set of receive antennas, determines a maximum result of the determination operation for two of the antennas, eliminates one of the two antennas from the set of antennas, and repeats the determination and elimination process until only a predetermined number of antennas remain in the set. The signals from these remaining antennas are then processed. The present invention reduces receiver complexity and cost.

摘要翻译： 提出了一种执行接收天线选择的方法。 该方法执行一组接收天线的确定操作，确定两个天线的确定操作的最大结果，从该组天线中消除两个天线中的一个天线，并重复确定和消除处理，直到只有预定的 天线数保留在该组中。 然后处理来自这些剩余天线的信号。 本发明降低了接收机的复杂性和成本。

公开(公告)号：US20120140835A1

公开(公告)日：2012-06-07

申请号：US13294555

申请日：2011-11-11

申请人： Nicolai Czink ,  Thomas Zemen ,  Laura Bernadó ,  Andreas Molisch

发明人： Nicolai Czink ,  Thomas Zemen ,  Laura Bernadó ,  Andreas Molisch

IPC分类号： H04B15/00 ,  H04L27/28

CPC分类号： H04L25/0226 ,  H04L25/0222 ,  H04L25/0234 ,  H04L27/2605

摘要： A method of channel estimation in an OFDM transmission system having a transmitter and a receiver according to standard IEEE 802.11x. The method includes: in the transmitter, setting an identifier in a reserved bits section of the header following the preamble in a physical layer frame; attaching a postamble at the end of said frame without altering the length information in the header; transmitting said frame over the channel, in the receiver, receiving a frame over the channel and checking a reserved bits section in the header of the received frame for the presence of the identifier; and if the identifier is detected, using the postamble and the preamble of the received frame to estimate the channel.

摘要翻译： 一种具有根据标准IEEE 802.11x的发射机和接收机的OFDM传输系统中的信道估计方法。 该方法包括：在发射机中，在物理层帧中的前同步码之后的标题的保留比特部分中设置标识符; 在所述帧的末尾附加后同步码，而不改变报头中的长度信息; 在所述接收机中通过所述信道发送所述帧，在所述信道上接收帧，并且检查所述接收帧的报头中的保留位部分以存在所述标识符; 并且如果检测到标识符，则使用后同步码和所接收的帧的前导码来估计信道。

公开(公告)号：US07912014B2

公开(公告)日：2011-03-22

申请号：US10255441

申请日：2002-09-26

申请人： Andreas Molisch ,  Martin Vivian Clark ,  Huaiyu Dai ,  Moe Z. Win ,  Jack Harriman Winters

发明人： Andreas Molisch ,  Martin Vivian Clark ,  Huaiyu Dai ,  Moe Z. Win ,  Jack Harriman Winters

IPC分类号： H04W4/00

CPC分类号： H04L25/067 ,  H04B7/04 ,  H04L1/06 ,  H04L25/0204 ,  H04L25/0212 ,  H04L25/0224

摘要： Interference is reduced with a multiple-input-multiple-output (MIMO) system having a set of basestations including a first basestation and a second basestation is reduced. Signals associated with the first basestation having its own antenna elements are received. The first basestation is associated with its own mobile stations each having their own antenna elements. Each signal associated with the first basestation is uniquely associated with a mobile station associated with the first basestation. Signals associated with the second basestation having its own antenna elements are received. The second basestation is associated with its own mobile stations each having their own antenna elements. Each signal associated with the second basestation is uniquely associated with a mobile station associated with the second basestation. Signals associated with the first basestation are jointly detected in conjunction with the signals associated with the second basestation to produce a set of detected signals.

摘要翻译： 通过具有一组基站的多输入多输出（MIMO）系统来减少干扰，所述基站包括第一基站，并且减少了第二基站。 接收与具有其自己的天线元件的第一基站相关联的信号。 第一个基站与其自己的移动站相关联，每个移动站具有它们自己的天线元素。 与第一基站相关联的每个信号与与第一基站相关联的移动站唯一地相关联。 接收与具有其自己的天线元件的第二基站相关联的信号。 第二个基站与其各自具有自己的天线元件的其自己的移动台相关联。 与第二基站相关联的每个信号与与第二基站相关联的移动站唯一地相关联。 与第一基站相关联的信号与与第二基站相关联的信号一起共同检测以产生一组检测到的信号。