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    Frame structure for an adaptive modulation wireless communication system
    15.
    发明授权
    Frame structure for an adaptive modulation wireless communication system 有权

    公开(公告)号：US06804211B1

    公开(公告)日：2004-10-12

    申请号：US09365917

    申请日：1999-08-03

    申请人： Israel Jay Klein ,  Kenneth L. Stanwood ,  Steve Pollmann ,  Frederick W. Price ,  Rami Hadar ,  Eli Arviv ,  David Gazelle ,  Sheldon Gilbert

    发明人： Israel Jay Klein ,  Kenneth L. Stanwood ,  Steve Pollmann ,  Frederick W. Price ,  Rami Hadar ,  Eli Arviv ,  David Gazelle ,  Sheldon Gilbert

    IPC分类号： H04Q700

    CPC分类号： H04B7/2656 ,  H04L1/0003 ,  H04L1/0004 ,  H04L1/0057 ,  H04L1/0059 ,  H04L1/0065 ,  H04L1/0083 ,  H04L25/03038 ,  H04L27/0008 ,  H04L2025/0342 ,  H04L2025/03477 ,  H04W72/0446 ,  H04W88/02 ,  H04W88/08 ,  Y02D50/10

    摘要： A method of assigning downlink time slots to receive units where the units may generate data using different modulation schemes. The method preferably assigns the downlink time slots as a function of the complexity of modulation schemes employed by the units. Further, the method preferably assigns the time slots from the least complex modulation scheme to the most complex scheme. The method may further assign uplink time slots to transmit units where the transmit units may generate data using different modulation schemes. The method preferably assigns the uplink time slots as a function of the complexity of modulation schemes employed by the uplink units. Further, the method preferably assigns the uplink time slots from the least complex modulation scheme to the most complex scheme. In other embodiments, the downlink time slots are assigned as a function of the bit per symbol rate employed by the receive units, preferably from the lowest bit per symbol rate to the highest bit per symbol rate. Further, the uplink time slots are assigned as a function of the bit per symbol rate employed by the transmit units, preferably from the lowest bit per symbol rate to the highest bit per symbol rate. The present invention is also a method of simplifying the encoding of a predetermined number of bits of data into frames. The method adds error coding bits so that a ratio of the frame length times the baud rate of the frame times the bit packing ratio of the data divided the total bits of data is always an integer. The method may also convolutionally encode the bits of data so that the same equation is also always an integer. The present invention is also a method of updating the weights of a FIR filter where the filter processes symbols having variable modulation rates. When the modulation rate of the incoming symbols changes, the weights corresponding to the first symbol having the new modulation rate are changed based as the symbol propagates through the filter.

    Frame structure for an adaptive modulation wireless communication system
    16.
    发明申请
    Frame structure for an adaptive modulation wireless communication system 失效

    公开(公告)号：US20050058098A1

    公开(公告)日：2005-03-17

    申请号：US10962957

    申请日：2004-10-12

    申请人： Israel Klein ,  Kenneth Stanwood ,  Steve Pollmann ,  Frederick Price ,  Rami Hadar ,  Eli Arviv ,  David Gazelle ,  Sheldon Gilbert

    发明人： Israel Klein ,  Kenneth Stanwood ,  Steve Pollmann ,  Frederick Price ,  Rami Hadar ,  Eli Arviv ,  David Gazelle ,  Sheldon Gilbert

    IPC分类号： H04B7/26 ,  H04J3/00 ,  H04L1/00 ,  H04L25/03 ,  H04L27/00 ,  H04Q7/00

    CPC分类号： H04B7/2656 ,  H04L1/0003 ,  H04L1/0004 ,  H04L1/0057 ,  H04L1/0059 ,  H04L1/0065 ,  H04L1/0083 ,  H04L25/03038 ,  H04L27/0008 ,  H04L2025/0342 ,  H04L2025/03477 ,  H04W72/0446 ,  H04W88/02 ,  H04W88/08 ,  Y02D50/10

    摘要： A method of assigning downlink time slots to receive units where the units may generate data using different modulation schemes. The method preferably assigns the downlink time slots as a function of the complexity of modulation schemes employed by the units. Further, the method preferably assigns the time slots from the least complex modulation scheme to the most complex scheme. The method may further assign uplink time slots to transmit units where the transmit units may generate data using different modulation schemes. The method preferably assigns the uplink time slots as a function of the complexity of modulation schemes employed by the uplink units. Further, the method preferably assigns the uplink time slots from the least complex modulation scheme to the most complex scheme. In other embodiments, the downlink time slots are assigned as a function of the bit per symbol rate employed by the receive units, preferably from the lowest bit per symbol rate to the highest bit per symbol rate. Further, the uplink time slots are assigned as a function of the bit per symbol rate employed by the transmit units, preferably from the lowest bit per symbol rate to the highest bit per symbol rate. The present invention is also a method of simplifying the encoding of a predetermined number of bits of data into frames. The method adds error coding bits so that a ratio of the frame length times the baud rate of the frame times the bit packing ratio of the data divided the total bits of data is always an integer. The method may also convolutionally encode the bits of data so that the same equation is also always an integer. The present invention is also a method of updating the weights of a FIR filter where the filter processes symbols having variable modulation rates. When the modulation rate of the incoming symbols changes, the weights corresponding to the first symbol having the new modulation rate are changed based as the symbol propagates through the filter.

    Method to train a radio receiver
    18.
    发明授权
    Method to train a radio receiver 有权
    训练无线电接收机的方法

    公开(公告)号：US06621877B1

    公开(公告)日：2003-09-16

    申请号：US09355158

    申请日：1999-09-30

    申请人： Eli Arviv ,  Eliezer Fogel ,  Rafael Carmon ,  Mark Shahaf

    发明人： Eli Arviv ,  Eliezer Fogel ,  Rafael Carmon ,  Mark Shahaf

    IPC分类号： H04L2706

    CPC分类号： H04B7/005

    摘要： A method to train a radio includes the steps of: in a radio (36), receiving a slot of information (2) containing at least an initial portion (4) containing training information (10), a second portion (5) containing training information (11), which second portion (5) is separated from the initial portion (4), and a concluding portion (6) containing training information (12), which concluding portion (6) is separated from the second portion (5). The method combining one of the initial portion (4) with the concluding portion (6a) of a previous slot of information (1) and the concluding portion (6) with an initial portion (4b) of a subsequent slot of information (3) to provide an at least one combined portion of training information. The method using the at least one combined portion of training information and the second portion of training information to train the radio.

    摘要翻译： 一种训练无线电的方法包括以下步骤：在无线电（36）中，接收包含至少包含训练信息（10）的初始部分（4）的信息时隙（2），包含培训的第二部分（5） 信息（11），其中第二部分（5）与初始部分（4）分离，以及包含训练信息（12）的结束部分（6），该结论部分（6）与第二部分（5）分离， 。 将信息（1）的前一时隙和结束部分（6）的初始部分（4）与结束部分（6a）中的一个与后续信息时隙（3）的初始部分（4b）组合的方法， 以提供训练信息的至少一个组合部分。 使用训练信息的至少一个组合部分和训练信息的第二部分来训练无线电的方法。

    Communication method
    19.
    发明授权
    Communication method 失效
    沟通方式

    公开(公告)号：US5960360A

    公开(公告)日：1999-09-28

    申请号：US941127

    申请日：1997-09-29

    申请人： Rafael Carmon ,  Mark Shahaf ,  Eli Arviv

    发明人： Rafael Carmon ,  Mark Shahaf ,  Eli Arviv

    IPC分类号： H04W24/00 ,  H04W72/04 ,  H04W74/04 ,  H04W76/02 ,  H04W84/08 ,  H04W92/18 ,  H04Q7/38

    CPC分类号： H04W76/02 ,  H04W84/08 ,  H04W24/00 ,  H04W74/04 ,  H04W92/18

    摘要： A communication method is provided in which mobiles operating in a trunk mode operation transmit a message on a direct mode operation channel indicating a trunk mode operation connection is present. If a mobile outside the range of coverage of the trunking system receives the message it will deduce from the message the slot structure of the trunk mode channel and its timing, and will then be able to transmit a request for a direct mode connection on an appropriate slot of the trunk mode channel. Some or all of the mobiles operating in trunk mode will then be able to switch to direct mode to connect with the mobile outside the range of coverage.

    摘要翻译： 提供一种通信方法，其中以中继模式操作的移动台在指示中继线模式操作连接的直接模式操作信道上发送消息。 如果在中继系统的覆盖范围之外的移动台接收到消息，则该消息将从消息中推断中继线模式信道的时隙结构及其定时，并且然后将能够以适当的方式发送对直接模式连接的请求 中继线模式通道的插槽。 在干线模式下运行的部分或全部手机将能够切换到直接模式以在覆盖范围之外与移动设备进行连接。

    Asymmetric adaptive modulation in a wireless communication system
    20.
    发明授权
    Asymmetric adaptive modulation in a wireless communication system 有权
    无线通信系统中的非对称自适应调制

    公开(公告)号：US06549759B2

    公开(公告)日：2003-04-15

    申请号：US09938216

    申请日：2001-08-24

    申请人： Eli Arviv ,  Brian Spinar ,  Kenneth L. Stanwood ,  David Gazelle ,  Ofer Zimmerman ,  Penny Efraim

    发明人： Eli Arviv ,  Brian Spinar ,  Kenneth L. Stanwood ,  David Gazelle ,  Ofer Zimmerman ,  Penny Efraim

    IPC分类号： H04B100

    CPC分类号： H04L1/20 ,  H04L2001/0093

    摘要： On embodiment of the system and method provides asymmetric adaptive modulation which allows uplink and downlink subframes of data to be transmitted between a base station and a CPE with different modulation schemes, thus increasing the efficiency of downlink transmissions while maintaining the stability of uplink transmissions. In systems with multiple CPEs, each CPE and base station pair can independently select their uplink and downlink modulation techniques. The system and method are also adaptive in that they adjust the modulation schemes based on, for example, signal to noise ratio measurements or bit error rate measurements.

    摘要翻译： 在系统和方法的实施例中提供了非对称自适应调制，其允许在具有不同调制方案的基站和CPE之间传输数据的上行链路和下行链路子帧，从而在保持上行链路传输的稳定性的同时增加下行链路传输的效率。 在具有多个CPE的系统中，每个CPE和基站对可以独立地选择它们的上行链路和下行链路调制技术。 该系统和方法也是自适应的，因为它们基于例如信噪比测量或误码率测量来调整调制方案。