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    SYSTEMS AND METHODS FOR IMPROVING CHANNEL ESTIMATION
    1.
    发明申请
    SYSTEMS AND METHODS FOR IMPROVING CHANNEL ESTIMATION 有权
    改进信道估计的系统和方法

    公开(公告)号：US20070202824A1

    公开(公告)日：2007-08-30

    申请号：US11743630

    申请日：2007-05-02

    申请人： Durga Malladi ,  Josef Blanz ,  Yongbin Wei

    发明人： Durga Malladi ,  Josef Blanz ,  Yongbin Wei

    IPC分类号： H04B1/10

    CPC分类号： H04L25/0242

    摘要： A method for improving channel estimation in a wireless communication system is disclosed. A wireless signal that includes a plurality of multipath components is received. N channel estimates are then obtained, where N is any positive integer greater than one. Each channel estimate of the N channel estimates corresponds to a different multipath component of the plurality of multipath components. The effects of interference between the plurality of multipath components on the N channel estimates is then reduced.

    摘要翻译： 公开了一种在无线通信系统中改善信道估计的方法。 接收包括多个多径分量的无线信号。 然后获得N个信道估计，其中N是大于1的任何正整数。 N信道估计的每个信道估计对应于多个多径分量的不同的多径分量。 然后减少在N个信道估计上的多个多径分量之间的干扰的影响。

    COMMUNICATION RECEIVER WITH AN ADAPTIVE EQUALIZER
    2.
    发明申请
    COMMUNICATION RECEIVER WITH AN ADAPTIVE EQUALIZER 有权
    具有自适应均衡器的通信接收器

    公开(公告)号：US20080002763A1

    公开(公告)日：2008-01-03

    申请号：US11856678

    申请日：2007-09-17

    申请人： Yongbin Wei ,  Durga Malladi ,  Josef Blanz

    发明人： Yongbin Wei ,  Durga Malladi ,  Josef Blanz

    IPC分类号： H03H7/30 ,  H03H7/40

    CPC分类号： H04B1/7105 ,  H04B2201/70701 ,  H04L25/0228 ,  H04L25/03044 ,  H04L2025/03509 ,  H04L2025/03522 ,  H04L2025/03598 ,  H04L2025/03617

    摘要： In a wireless communication system, a method for estimating a transmitted signal is disclosed. A wireless signal is received that includes a pilot channel and at least one other channel. A transmitted signal is estimated using an equalizer and the received wireless signal. The equalizer includes a filter with a plurality of taps that are adapted through use of an adaptive algorithm that uses an estimated pilot estimated from the received wireless signal. The pilot channel is transmitted in the wireless signal that included the at least one other channel. The estimated pilot is extracted and provided to the adaptive algorithm.

    摘要翻译： 在无线通信系统中，公开了一种用于估计发送信号的方法。 接收包括导频信道和至少一个其它信道的无线信号。 使用均衡器和接收到的无线信号来估计发送信号。 均衡器包括具有多个抽头的滤波器，其通过使用自适应算法来适配，所述自适应算法使用从所接收的无线信号估计的估计导频。 在包括至少一个其他信道的无线信号中发送导频信道。 估计的导频被提取并提供给自适应算法。

    Method and apparatus for block-wise decision-feedback equalization for wireless communication
    3.
    发明申请
    Method and apparatus for block-wise decision-feedback equalization for wireless communication 有权

    公开(公告)号：US20060227859A1

    公开(公告)日：2006-10-12

    申请号：US11392306

    申请日：2006-03-28

    申请人： Yongbin Wei ,  Byoung-Hoon Kim ,  Durga Malladi

    发明人： Yongbin Wei ,  Byoung-Hoon Kim ,  Durga Malladi

    IPC分类号： H03H7/30

    CPC分类号： H04L25/03063 ,  H04L25/03057 ,  H04L25/03159

    摘要： Techniques for performing decision feedback equalization are described. A feed-forward filter response and a feedback filter response are derived based on a channel estimate and a reliability parameter and further without constraint on the feedback filter response or with a constraint of no feedback for an on-time sample. The reliability parameter is indicative of the reliability of the feedback used for equalization and may be frequency dependent or frequency invariant. Different feed-forward and feedback filter responses may be derived with different constraints on the feedback filter and different assumptions for the reliability parameter. Equalization is performed with the feed-forward and feedback filter responses. If equalization is performed for multiple iterations then, for each iteration, the reliability parameter may be updated, the feed-forward and feedback filter responses may be derived based on the updated reliability parameter, and equalization may be performed with the filter responses for the iteration.

    Combining grant, acknowledgement, and rate control commands
    4.
    发明申请
    Combining grant, acknowledgement, and rate control commands 有权
    组合授权，确认和速率控制命令

    公开(公告)号：US20050030911A1

    公开(公告)日：2005-02-10

    申请号：US10780824

    申请日：2004-02-17

    申请人： Edward Tiedemann ,  Aleksandar Damnjanovic ,  Avinash Jain ,  Durga Malladi ,  David Oses ,  Peter Gaal ,  Stein Lundby ,  Sandip Sarkar ,  Tao Chen ,  Yongbin Wei ,  Serge Willenegger

    发明人： Edward Tiedemann ,  Aleksandar Damnjanovic ,  Avinash Jain ,  Durga Malladi ,  David Oses ,  Peter Gaal ,  Stein Lundby ,  Sandip Sarkar ,  Tao Chen ,  Yongbin Wei ,  Serge Willenegger

    IPC分类号： H04B7/26 ,  H04L1/00 ,  H04L1/16 ,  H04L1/18 ,  H04W28/22 ,  H04W72/14 ,  H04B7/005 ,  H04B7/204

    CPC分类号： H04W72/14 ,  H04B7/264 ,  H04L1/0026 ,  H04L1/1671 ,  H04L1/1819

    摘要： Embodiments disclosed herein address the need in the art for reduced overhead control with the ability to adjust transmission rates as necessary. In one aspect, a first signal indicates an acknowledgement of a decoded subpacket and whether or not a rate control command is generated, and a second signal conditionally indicates the rate control command when one is generated. In another aspect, a grant may be generated concurrently with the acknowledgement. In yet another aspect, a mobile station monitors the first signal, conditionally monitors the second signal as indicated by the first signal, and may monitor a third signal comprising a grant. In yet another aspect, one or more base stations transmit one or more of the various signals. Various other aspects are also presented. These aspects have the benefit of providing the flexibility of grant-based control while utilizing lower overhead when rate control commands are used, thus increasing system utilization, increasing capacity and throughput.

    摘要翻译： 本文公开的实施例解决了本领域中需要减少开销控制的需要，其具有根据需要调整传输速率的能力。 一方面，第一信号表示解码子包的确认，以及是否生成速率控制指令，第二信号在生成一个信号时有条件地指示速率控制指令。 在另一方面，可以与确认同时产生许可。 在另一方面，移动站监视第一信号，有条件地监视由第一信号指示的第二信号，并且可以监视包括授权的第三信号。 在另一方面，一个或多个基站发射各种信号中的一个或多个。 还提出了各种其他方面。 这些方面具有提供基于授权的控制的灵活性的优点，同时在使用速率控制命令时利用较低的开销，从而提高系统利用率，增加容量和吞吐量。

    Systems and methods for hierarchically demodulating and decoding a data signal using a pilot signal and an additional signal
    5.
    发明申请
    Systems and methods for hierarchically demodulating and decoding a data signal using a pilot signal and an additional signal 失效
    使用导频信号和附加信号对数据信号进行分层解调和解码的系统和方法

    公开(公告)号：US20050002444A1

    公开(公告)日：2005-01-06

    申请号：US10781461

    申请日：2004-02-17

    申请人： Yongbin Wei ,  Durga Malladi ,  Stein Lundby ,  Tao Chen ,  Serge Willenegger

    发明人： Yongbin Wei ,  Durga Malladi ,  Stein Lundby ,  Tao Chen ,  Serge Willenegger

    IPC分类号： H04B1/707

    CPC分类号： H04B1/707

    摘要： Systems and methods for demodulating and decoding signals on a multi-path data channel using a pilot signal and at least one additional signal as a demodulation reference. One embodiment comprises a method in which a pilot signal is used to demodulate and decode an additional signal, and then both the pilot signal and the additional signal are used to demodulate and decode a data traffic signal. A receiver receives a data traffic signal, a rate indicator signal and a pilot signal. The pilot signal is used as a demodulation reference for the rate indicator signal. After the rate indicator signal is demodulated and decoded, this signal is re-encoded and compared to the received rate indicator signal and used in combination with the pilot signal as a demodulation reference for the demodulation and decoding of the data traffic signal and to estimate SNR for power control purposes.

    摘要翻译： 用于使用导频信号和至少一个附加信号作为解调参考在多路数据信道上解调和解码信号的系统和方法。 一个实施例包括一种方法，其中使用导频信号来解调和解码附加信号，然后导频信号和附加信号都用于对数据业务信号进行解调和解码。 接收机接收数据业务信号，速率指示符信号和导频信号。 导频信号用作速率指示信号的解调参考。 在速率指示信号被解调和解码之后，将该信号重新编码并与接收的速率指示符信号进行比较，并与导频信号组合使用，作为数据业务信号的解调和解码的解调参考，并估计SNR 用于电源控制目的。

    Method and system for channel equalization
    7.
    发明申请
    Method and system for channel equalization 有权

    公开(公告)号：US20060176987A1

    公开(公告)日：2006-08-10

    申请号：US11293527

    申请日：2005-12-02

    申请人： Durga Malladi ,  Byoung-Hoon Kim ,  Yongbin Wei

    发明人： Durga Malladi ,  Byoung-Hoon Kim ,  Yongbin Wei

    IPC分类号： H03D1/04

    CPC分类号： H04L25/03006 ,  H04L25/022 ,  H04L25/0228 ,  H04L2025/03375 ,  H04L2025/03783

    摘要： One embodiment includes a method of receiving a transmitted signal. The method comprises receiving a signal transmitted over a channel. The signal comprises a known signal and an information signal. The method further includes determining at least one indicator of channel characteristics based at least in part on the portion of the known signal. The method further includes generating a first value indicative of the information signal based at least in part on the at least one indicator of the channel characteristics. The first value comprises an error signal. The method further comprises removing the error signal from the first estimate of the signal based at least in part on the portion of the known signal. Other embodiments include systems for performing the method and methods of making such systems.

    Outer-loop power control for wireless communication systems
    9.
    发明申请
    Outer-loop power control for wireless communication systems 有权
    无线通信系统的外环功率控制

    公开(公告)号：US20050007986A1

    公开(公告)日：2005-01-13

    申请号：US10756957

    申请日：2004-01-13

    申请人： Durga Malladi ,  Tao Chen ,  Yongbin Wei

    发明人： Durga Malladi ,  Tao Chen ,  Yongbin Wei

    IPC分类号： H04B7/00 ,  H04B7/216 ,  H04B17/00 ,  H04L1/00 ,  H04L12/56 ,  H04Q7/38

    CPC分类号： H04L1/0039 ,  H04L1/201

    摘要： Systems and methods for evaluating packets and frames in a wireless communication system having multiple reverse-link channels including a spontaneous, burst oriented transmission channel and its corresponding rate indicator channel. One embodiment comprises a base station monitoring the rate indicator channel, decoding the rate indicator channel using a maximum likelihood decoder and detecting the presence of a packet on the rate indicator channel by comparing a likelihood with a threshold, and analyzing the validity of a frame on the burst oriented channel based on the presence and content of packets received on the rate indicator channel.

    摘要翻译： 在具有多个反向链路信道的无线通信系统中评估分组和帧的系统和方法，包括自发的突发定向传输信道及其对应的速率指示信道。 一个实施例包括监视速率指示符信道的基站，使用最大似然解码器解码速率指示符信道，并通过将似然率与阈值进行比较来检测速率指示符信道上的分组的存在，以及分析帧的有效性 基于在速率指示符信道上接收到的分组的存在和内容的突发定向信道。

    COMBINING GRANT, ACKNOWLEDGEMENT, AND RATE CONTROL COMMANDS
    10.
    发明申请
    COMBINING GRANT, ACKNOWLEDGEMENT, AND RATE CONTROL COMMANDS 有权
    组合授权，确认和费率控制命令

    公开(公告)号：US20070206623A1

    公开(公告)日：2007-09-06

    申请号：US11747131

    申请日：2007-05-10

    申请人： Edward Tiedemann ,  Aleksandar Damnjanovic ,  Avinash Jain ,  Durga Malladi ,  David Oses ,  Peter Gaal ,  Stein Lundby ,  Sandip Sarkar ,  Tao Chen ,  Yongbin Wei ,  Serge Willenegger

    发明人： Edward Tiedemann ,  Aleksandar Damnjanovic ,  Avinash Jain ,  Durga Malladi ,  David Oses ,  Peter Gaal ,  Stein Lundby ,  Sandip Sarkar ,  Tao Chen ,  Yongbin Wei ,  Serge Willenegger

    IPC分类号： H04L12/28

    CPC分类号： H04W72/14 ,  H04B7/264 ,  H04L1/0026 ,  H04L1/1671 ,  H04L1/1819

    摘要： Embodiments disclosed herein address the need in the art for reduced overhead control with the ability to adjust transmission rates as necessary. In one aspect, a first signal indicates an acknowledgement of a decoded subpacket and whether or not a rate control command is generated, and a second signal conditionally indicates the rate control command when one is generated. In another aspect, a grant may be generated concurrently with the acknowledgement. In yet another aspect, a mobile station monitors the first signal, conditionally monitors the second signal as indicated by the first signal, and may monitor a third signal comprising a grant. In yet another aspect, one or more base stations transmit one or more of the various signals. Various other aspects are also presented. These aspects have the benefit of providing the flexibility of grant-based control while utilizing lower overhead when rate control commands are used, thus increasing system utilization, increasing capacity and throughput.

    摘要翻译： 本文公开的实施例解决了本领域中需要减少开销控制的需要，其具有根据需要调整传输速率的能力。 一方面，第一信号表示解码子包的确认，以及是否生成速率控制指令，第二信号在生成一个信号时有条件地指示速率控制指令。 在另一方面，可以与确认同时产生许可。 在另一方面，移动站监视第一信号，有条件地监视由第一信号指示的第二信号，并且可以监视包括授权的第三信号。 在另一方面，一个或多个基站发射各种信号中的一个或多个。 还提出了各种其他方面。 这些方面具有提供基于授权的控制的灵活性的优点，同时在使用速率控制命令时利用较低的开销，从而提高系统利用率，增加容量和吞吐量。