公开(公告)号：US20040248515A1

公开(公告)日：2004-12-09

申请号：US10488675

申请日：2004-03-03

发明人： Arkady Molev Shteiman

IPC分类号： H04B007/005 ,  H04B007/01 ,  H04B007/015 ,  H04B015/00

CPC分类号： H04B1/7105 ,  H04B1/7093 ,  H04B1/71057

摘要： A method of finding a maximum likelihood solution for, comprising: providing a sample vector; iteratively match-filtering said sample vector with a coefficient matrix to find a gradient; using the gradient to search for a maximum likelihood solution; and deciding if a found solution of vector data is good enough.

摘要翻译： 一种找到最大似然解的方法，包括：提供样本向量; 迭代地用系数矩阵对所述样本向量进行匹配滤波以找到梯度; 使用梯度搜索最大似然解; 并确定矢量数据的找到解是否足够好。

公开(公告)号：US20040198421A1

公开(公告)日：2004-10-07

申请号：US10359812

申请日：2003-02-07

发明人： Philip David Coan

IPC分类号： H04B001/10 ,  H04B007/005 ,  H04B007/01

CPC分类号： H04B1/126

摘要： Terminals with multiple radio units employing different IF frequencies for RF to IF frequency downconversion are provided. Each radio unit is operative to process a respective input signal with a respective LO signal to provide a respective IF signal having a desired IF component at an IF frequency selected for that radio unit. The input signal for each radio unit includes RF components at different RF frequencies. The desired IF component for each radio unit corresponds to a downconverted version of one of the RF components in the input signal. The IF frequencies for the radio units are selected such that the desired IF components for these radio unit do not overlap one another in frequency. The IF frequencies may be selected such that, for each radio unit, the undesired IF components fall outside of the IF passband selected for that radio unit and may thus be filtered out.

摘要翻译： 提供了具有用于RF到IF频率下变频的具有不同IF频率的多个无线单元的终端。 每个无线电单元操作以用相应的LO信号处理相应的输入信号，以提供具有为该无线电单元选择的IF频率的期望IF分量的相应IF信号。 每个无线电单元的输入信号包括不同RF频率的RF分量。 每个无线电单元的期望的IF分量对应于输入信号中的一个RF分量的下变换版本。 选择无线电单元的IF频率使得这些无线电单元的期望的IF分量在频率上彼此不重叠。 可以选择IF频率，使得对于每个无线电单元，不期望的IF组件落在为该无线电单元选择的IF通带之外，并且因此可以被滤除。

公开(公告)号：US20040185857A1

公开(公告)日：2004-09-23

申请号：US10813869

申请日：2004-03-30

发明人： Wayne A. Lee ,  Ganesh Pattabiraman ,  Thomas E. Wendoll

IPC分类号： H04B007/005 ,  H04B007/015 ,  H04B007/01 ,  H04B015/00 ,  H04Q007/20

CPC分类号： H04B1/707 ,  H04B2201/70709 ,  H04W52/0229 ,  H04W52/0251 ,  H04W72/1215 ,  H04W88/06 ,  Y02D70/1222 ,  Y02D70/1224 ,  Y02D70/144 ,  Y02D70/40

摘要： In a dual mode Bluetooth/wireless mobile unit, the next sleep mode Bluetooth wakeup time is rescheduled to synchronize with any upcoming idle mode wireless wakeup time that will otherwise precede the Bluetooth wakeup time. The Bluetooth clock is advanced, or other reconfiguration made to the Bluetooth module, as appropriate to prevent the scanning frequency from changing during a sleep mode Bluetooth wakeup/scanning interval commencing at the resynchronized Bluetooth wakeup time.

摘要翻译： 在双模式蓝牙/无线移动单元中，重新安排下一个睡眠模式蓝牙唤醒时间，以与任何即将到来的空闲模式无线唤醒时间同步，否则蓝牙唤醒时间将在蓝牙唤醒时间之前。 蓝牙时钟是高级的，或者对蓝牙模块进行其他重新配置，以防止在睡眠模式期间扫描频率发生变化蓝牙唤醒/扫描间隔从重新同步的蓝牙唤醒时间开始。

公开(公告)号：US20040147272A1

公开(公告)日：2004-07-29

申请号：US10715565

申请日：2003-11-19

发明人： Shinsuke Shiota ,  Yoshikazu Kobayashi

IPC分类号： H04B007/01

CPC分类号： H04W56/00

摘要： A time-matching system includes a first terminal device and a communications relay device relaying communications between the first terminal device and a second terminal device on a wireless communications network. The first terminal device receives a GPS-data from a GPS satellite, executes a first correction procedure on a satellite time-data of the GPS data to generate a first time-data, and transmits the first time-data to the communications relay device. The communications relay device receives the first time-data, executes an intermediate correction procedure on the first time-data to generate an intermediate time-data, and transmits the intermediate time-data to the second terminal device. The first correction procedure is based on a time delay in communications between the GPS satellite and the first terminal device. The intermediate correction procedure is based on a time delay in communications between the first terminal device and the communications relay device.

摘要翻译： 时间匹配系统包括第一终端设备和中继第一终端设备与无线通信网络上的第二终端设备之间的通信的通信中继设备。 第一终端装置从GPS卫星接收GPS数据，对GPS数据的卫星时间数据执行第一校正处理，生成第一时间数据，并将第一时间数据发送到通信中继装置。 通信中继设备接收第一时间数据，对第一时间数据执行中间校正过程以产生中间时间数据，并将中间时间数据发送到第二终端设备。 第一校正过程基于GPS卫星与第一终端设备之间的通信中的时间延迟。 中间校正过程基于第一终端设备和通信中继设备之间的通信中的时间延迟。

公开(公告)号：US20040121788A1

公开(公告)日：2004-06-24

申请号：US10678107

申请日：2003-10-06

申请人： NTT DoCoMo, Inc.

发明人： Sung Uk Moon ,  Takehiro Nakamura ,  Minami Ishii ,  Masafumi Usuda ,  Mayu Yamada ,  Akihito Hanaki

IPC分类号： H04B007/005 ,  H04B007/01 ,  H04B007/015 ,  H04B015/00 ,  H04B007/00 ,  H04Q007/20

CPC分类号： H04W72/005 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/0026 ,  H04L1/0071 ,  H04L1/08 ,  H04L1/20 ,  H04L12/1868 ,  H04L12/189 ,  H04L2001/0093 ,  H04W72/08

摘要： The object of the present invention is provide a mobile communication system which can improve a communication quality of the mobile communication system as a whole by changing a transmission method for transmitting common information. Each of the mobile stations 200a to 200l comprises a communication quality measurer 230 configured to measure a communication quality of a signal transmitted from the radio station 100a. The radio station 100a comprises a communication quality acquirer 130 configured to acquire the communication quality from the plurality of mobile stations 200a to 200l; a transmission method changer 140 configured to change a transmission method for at least one of an error encoding rate, the number of repeated bits, an interleave length, the number of multiple codes and the number of transmission signal repetitions, in accordance with the acquired communication quality; and a transmitter 110 configured to transmit the signal to the plurality of mobile stations 200a to 200l using the changed transmission method.

摘要翻译： 本发明的目的是提供一种移动通信系统，其可以通过改变用于发送公共信息的发送方法来整体上提高移动通信系统的通信质量。 每个移动站200a至200l包括通信质量测量器230，其被配置为测量从无线电台100a发送的信号的通信质量。 无线电台100a包括被配置为从多个移动站200a到200l获取通信质量的通信质量获取器130; 传输方法改变器140，被配置为根据所获取的通信来改变错误编码率，重复位数，交织长度，多个码数和发送信号重复次数中的至少一个的发送方法 质量; 以及发送器110，被配置为使用改变的发送方法将信号发送到多个移动台200a至200l。

公开(公告)号：US20040092275A1

公开(公告)日：2004-05-13

申请号：US10613625

申请日：2003-07-03

发明人： Norman Krasner ,  Edward Vincent Jolley

IPC分类号： H04B007/005 ,  H04B007/01

CPC分类号： G01S11/08 ,  H04B7/2693 ,  H04L69/28 ,  H04W4/02 ,  H04W56/00

摘要： Methods and apparatuses for synchronizing basestations in a cellular network. One exemplary method performs time synchronization between at least two basestations, a first basestation and a second basestation, of a cellular communication system. In this exemplary method, a first time-of-day and a first geographical location of a first mobile cellular receiver station (MS) are determined from a first satellite positioning system (SPS) receiver which is co-located with the first MS, and the first time-of-day and first location are transmitted by the first MS to a first basestation which determines a time-of-day of the first basestation from the first time-of-day and first location and from a known location of the first basestation. Also in this exemplary method, a second time-of-day and a second geographical location of a second MS are determined from a second SPS receiver which is co-located with the second MS, and the second time-of-day and the second location are transmitted to a second basestation which determines a time-of-day of the second basestation from the second time-of-day and the second location and a known location of the second basestation. Other methods and apparatuses are also described for synchronizing basestations in a cellular network.

摘要翻译： 在蜂窝网络中同步基站的方法和装置。 一种示例性方法在蜂窝通信系统的至少两个基站（第一基站和第二基站）之间执行时间同步。 在该示例性方法中，从与第一MS同位的第一卫星定位系统（SPS）接收机确定第一移动蜂窝接收站（MS）的第一时间和第一地理位置，以及 第一时间和第一位置由第一MS发送到第一基站，该第一基站从第一时间和第一位置以及从第一基站的已知位置确定第一基站的时间 第一个基地。 同样在该示例性方法中，从与第二MS共处的第二SPS接收器确定第二MS的第二时间和第二地理位置，并且第二时间和第二时间 位置被发送到第二基站，该第二基站从第二时间点和第二位置确定第二基站的时间和第二基站的已知位置。 还描述了用于在蜂窝网络中同步基站的其它方法和装置。

公开(公告)号：US20030073424A1

公开(公告)日：2003-04-17

申请号：US10242500

申请日：2002-09-11

发明人： Patrick Nunally

IPC分类号： H04B007/00 ,  H04B017/00 ,  H04M011/00 ,  H04B007/005 ,  H04B007/01 ,  H04B007/015 ,  H04B015/00 ,  H04Q007/20

CPC分类号： H04W52/283 ,  H04L47/10 ,  H04L47/12 ,  H04L47/14 ,  H04L47/20 ,  H04L47/26 ,  H04W4/90 ,  H04W72/10 ,  H04W76/50

摘要： A method and system for completing a communication of high importance on a congested communication system. The communication is transmitted between a communication device (e.g. a cordless telephone, a cellular telephone, a pager, a digital communication device, a personal digital assistant, or a wireless local loop device) and a base station. If uncongested channels are not available for communications between the communication device and the base station, a disabling signal is transmitted instructing emitting devices in the vicinity to reduce their emitted transmissions, thereby creating uncongested channels. Additionally, the communication device and base station can incrementally increase the power of transmitted signals until communications are established.

摘要翻译： 一种用于完成对拥塞的通信系统具有高度重要性的通信的方法和系统。 通信在通信设备（例如无绳电话，蜂窝电话，寻呼机，数字通信设备，个人数字助理或无线本地环路设备）和基站之间传送。 如果不通信通道不可用于通信设备和基站之间的通信，则发送禁用信号指示附近的发射设备以减少其发射的传输，从而产生不通信的信道。 此外，通信设备和基站可以递增地增加发送信号的功率，直到建立通信。

公开(公告)号：US20020082031A1

公开(公告)日：2002-06-27

申请号：US10036253

申请日：2001-12-22

发明人： Georg Stegemann

IPC分类号： H04B007/01

CPC分类号： H04L7/041 ,  H04W56/0035

摘要： The wireless communications system synchronizes the current frequency and permits communication under the DECT protocol between a mobile unit and a fixed base station with rapid and frequent changes in frequency, as defined for example in the ADCT protocol. For this purpose a key is derived from the identification code transmitted by the base station. Lists containing random or pseudo-random frequency sequences are specified, and one of the lists is selected depending on the key transmitted, and the corresponding frequencies are used for the frequency change.

摘要翻译： 无线通信系统同步当前频率，并允许在移动单元和固定基站之间的DECT协议下的通信，其具有如ADCT协议中定义的频率的快速和频繁变化。 为此，从基站发送的识别码导出密钥。 指定包含随机或伪随机频率序列的列表，并且根据发送的密钥来选择列表中的一个，并且使用相应的频率用于频率变化。

公开(公告)号：US20020058478A1

公开(公告)日：2002-05-16

申请号：US09884555

申请日：2001-06-19

发明人： Michael de La Chapelle ,  Kevin M. O'Brien

IPC分类号： H04B007/185 ,  H04B017/00 ,  H04B001/00 ,  H04B007/00 ,  H04Q007/20 ,  H04B007/005 ,  H04B007/01 ,  H04B007/015 ,  H04B015/00

CPC分类号： H04B7/18506 ,  H04B7/18508 ,  H04B7/18513 ,  H04W52/08 ,  H04W52/283

摘要： A system and method for managing access to a satellite-based transponder by a plurality of aircraft each having a mobile radio frequency (RF) system. The system employs a ground-based, central control system for managing access to the satellite-based transponder so that the aggregate power spectral density (PSD) of the RF signals of all the mobile systems does not exceed, at any time, limits established by regulatory agencies to prevent interference between satellite systems. This is accomplished by a dual control loop arrangement for monitoring the signal-to-noise ratio (Eb/No) of the RF signal transmitted by the satellite-based transponder. A ground-based control loop is used whereby a ground-based central controller monitors the Eb/No and transmits commands to the aircraft (via the satellite transponder) to maintain the Eb/No of the transmitted signal within a predetermined range. A fast scan angle compensation is used by the mobile system of the aircraft to implement another control loop to further adjust the transmit power. This control loop maintains the Eb/No of the signal transmitted to the satellite-based transponder at the commanded level inbetween updates from the ground-based central controller.

摘要翻译： 一种用于管理由具有移动射频（RF）系统的多个飞行器对基于卫星的应答器的访问的系统和方法。 该系统采用基于地面的中央控制系统来管理对基于卫星的应答器的访问，使得所有移动系统的RF信号的总功率谱密度（PSD）在任何时间都不超过由 监管机构防止卫星系统之间的干扰。 这通过用于监测由卫星转发器发送的RF信号的信噪比（Eb / No）的双重控制环路布置来实现。 使用基于地面的控制回路，由此基于地面的中央控制器监视Eb /否并且向飞行器（经由卫星转发器）发送命令以将发送的信号的Eb / No维持在预定范围内。 飞行器的移动系统使用快速扫描角补偿来实现另一个控制回路，以进一步调整发射功率。 该控制回路将来自基于地面的中央控制器的更新之间的指令级别的信号的Eb / No维持在基于卫星的应答器上。

公开(公告)号：US20020004405A1

公开(公告)日：2002-01-10

申请号：US09878343

申请日：2001-06-12

申请人： COMMISSARIAT A L'ENERGIE ATOMIQUE

发明人： Marc Laugeois ,  Didier Lattard ,  Jean-Remi Savel ,  Mathieu Bouvier des Noes

IPC分类号： H04B007/01

CPC分类号： H04L7/048 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/0057 ,  H04L7/041

摘要： A data transmission process with auto-synchronised correcting code, auto-synchronised coder and decoder, corresponding transmitter and receiver. According to the invention, synchronisation management signals (HS, SS, ID) are formed and, under the control of these signals, a header is inserted before a data group and after it a correcting code. At receive end, these synchronisation management signals are reconstituted, the presence of a header is detected and any erroneous symbols are corrected. The invention also provides for an auto-synchronised coder and a decoder and for a transmitter and a receiver using them.

摘要翻译： 具有自动同步校正码的数据传输过程，自动同步编码器和解码器，对应的发射器和接收器。 根据本发明，形成同步管理信号（HS，SS，ID），并且在这些信号的控制下，在数据组之前和之后插入一个标题。 在接收端，这些同步管理信号被重构，检测到报头的存在，并纠正任何错误的符号。 本发明还提供了自动同步编码器和解码器以及使用它们的发射机和接收机。