公开(公告)号：US20170093557A1

公开(公告)日：2017-03-30

申请号：US14865788

申请日：2015-09-25

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： Kevin G. Doberstein

IPC: H04L7/00 ,  H04L1/00 ,  H03M13/15

CPC classification number: H04L7/0008 ,  H03M13/154 ,  H04L1/0041 ,  H04L1/0045

Abstract: Systems and methods of synchronizing a fountain code transmitting end and receiving end. In one embodiment, the fountain code transmitting end includes a first pseudorandom number generator, a second pseudorandom number generator, and a first transceiver. The method includes generating, at the first pseudorandom number generator, a first random number based on a seed. The method further includes generating, at the second pseudorandom number generator, a first plurality of unique random numbers based on the first random number. The method also includes selecting, at the fountain code transmitting end, a first subset of data blocks of a plurality of data blocks based on the first plurality of unique random numbers. The method further includes generating, at the fountain code transmitting end, a first communication block based on the first subset of data blocks. The method also includes transmitting, via the first transceiver, the first communication block and the seed.

公开(公告)号：US09337877B2

公开(公告)日：2016-05-10

申请号：US14263600

申请日：2014-04-28

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： Mark Rozental ,  Nir Corse ,  Kevin G. Doberstein ,  Ovadia Grossman

IPC: H03D1/00 ,  H04L27/06 ,  H04B1/10 ,  H04B1/709 ,  H04B1/525 ,  H04B1/12

CPC classification number: H04B1/1081 ,  H04B1/123 ,  H04B1/525 ,  H04B1/709 ,  H04J11/0063

Abstract: A method and apparatus is provided for mitigating multiband self-interference using multipath cancellation. A dual-band transceiver receives an incoming radio-frequency signal that includes a multipath self-interference component generated by the transmission of an outgoing radio-frequency signal. The transceiver creates a plurality of reference signals from the outgoing radio-frequency signal by introducing delay values with respect to the outgoing signal. The transceiver adjusts the amplitude and phase of each of the delayed reference signals and combines the resulting signals with the incoming radio-frequency signal to cancel the self-interference component. The delay values may be determined adaptively. The systems and methods described herein are particularly useful for dual-band transceivers capable of communicating simultaneously using Long-Term Evolution (LTE) wideband signals and Public-Safety Narrowband (PSNB) signals.

Abstract translation: 提供了一种使用多路径消除来减轻多频带自干扰的方法和装置。 双频收发器接收输入射频信号，该信号包括通过传出射频信号产生的多径自干扰分量。 收发器通过引入相对于输出信号的延迟值，从输出射频信号产生多个参考信号。 收发器调整每个延迟参考信号的幅度和相位，并将结果信号与输入的射频信号组合，以消除自干扰分量。 延迟值可以自适应地确定。 本文描述的系统和方法对于能够使用长期演进（LTE）宽带信号和公共安全窄带（PSNB）信号同时通信的双频收发器特别有用。

公开(公告)号：US20150017941A1

公开(公告)日：2015-01-15

申请号：US13938623

申请日：2013-07-10

Applicant: Motorola Solutions, Inc

Inventor： Kevin G. Doberstein ,  Yadunandana N. Rao ,  Charles R. Ruelke

IPC: H04L1/00

CPC classification number: H04L1/0045 ,  H04L25/067

Abstract: A method and apparatus for using erasure to improve signal decoding when data is impacted by an interference event. Embodiments may include receiving in an RF receiver a desired on-channel signal that includes an information signal modulated on to the desired on-channel signal; generating a sampled received signal with an analog-to-digital (A/D) converter; detecting an interference event using an interference detector as well as generating a mask based on the interference event; processing the sampled received signal using the mask to generate decoding data for use by a soft decoder; and, providing the decoding data to the soft decoder.

Abstract translation: 一种当数据受到干扰事件的影响时，使用擦除来改善信号解码的方法和装置。 实施例可以包括在RF接收机中接收包含被调制到期望的开通信道信号上的信息信号的期望的通道信号; 利用模数（A / D）转换器生成采样的接收信号; 使用干扰检测器检测干扰事件以及基于所述干扰事件生成掩码; 使用掩码处理采样的接收信号以产生解码数据供软解码器使用; 并向软解码器提供解码数据。

公开(公告)号：US09749122B2

公开(公告)日：2017-08-29

申请号：US14865788

申请日：2015-09-25

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： Kevin G. Doberstein

IPC: H04J3/06 ,  H04L7/00 ,  H03M13/15 ,  H04L1/00

CPC classification number: H04L7/0008 ,  H03M13/154 ,  H04L1/0041 ,  H04L1/0045

Abstract: Systems and methods of synchronizing a fountain code transmitting end and receiving end. In one embodiment, the fountain code transmitting end includes a first pseudorandom number generator, a second pseudorandom number generator, and a first transceiver. The method includes generating, at the first pseudorandom number generator, a first random number based on a seed. The method further includes generating, at the second pseudorandom number generator, a first plurality of unique random numbers based on the first random number. The method also includes selecting, at the fountain code transmitting end, a first subset of data blocks of a plurality of data blocks based on the first plurality of unique random numbers. The method further includes generating, at the fountain code transmitting end, a first communication block based on the first subset of data blocks. The method also includes transmitting, via the first transceiver, the first communication block and the seed.

公开(公告)号：US09407477B2

公开(公告)日：2016-08-02

申请号：US14539490

申请日：2014-11-12

Applicant: MOTOROLA SOLUTIONS, INC

Inventor： Mark Rozental ,  Nir Corse ,  Kevin G. Doberstein ,  Josh E. Dorevitch ,  Baruh Hason ,  Claudine Tordjman

IPC: H04L25/06 ,  H04B1/10

CPC classification number: H04L25/061 ,  H04B1/10 ,  H04B1/30 ,  H04B2001/305

Abstract: A method and apparatus for a method and apparatus for correlation canceller for interference mitigation with adaptive DC offset cancellation for a dual mode communication device includes detecting an active signal transmitting in one mode; configuring integrators associated with the adaptive correlation canceller into gain amplifiers; detecting DC offset utilizing the gain amplifiers and comparators; and configuring the integrators from the gain amplifiers back to integrators with the DC offset applied thereto. The active signal transmitting in one mode can be Long Term Evolution (LTE) which is adjacent to a signal in another mode.

Abstract translation: 一种用于双模式通信设备的自适应DC偏移消除用于干扰减轻的相关消除器的方法和装置，包括：检测在一种模式下发送的有源信号; 将与自适应相关消除器相关联的积分器配置成增益放大器; 利用增益放大器和比较器检测DC偏移; 以及将来自增益放大器的积分器配置为具有施加到其的DC偏移的积分器。 以一种模式发送的活动信号可以是与另一模式中的信号相邻的长期演进（LTE）。