公开(公告)号：US20160218754A1

公开(公告)日：2016-07-28

申请号：US14605481

申请日：2015-01-26

Applicant: MOTOROLA SOLUTIONS, INC

Inventor： QICAI SHI ,  NEIYER S. CORREAL ,  JOSEPH P. HECK ,  SPYROS KYPEROUNTAS ,  ROBERT E. STENGEL

IPC: H04B1/04

CPC classification number: H04B1/1036 ,  H04B1/7107 ,  H04J11/0066 ,  H04L25/03821

Abstract: A communication device includes a receiver that is capable of canceling in-channel interference. The receiver includes an antenna for receiving a wireless signal comprising in-channel components and an out-of-channel component, wherein the in-channel components comprise a desired component and an in-channel interference component. A first filter of the receiver filters the wireless signal by blocking at least a portion of the out-of-channel component to produce a first signal comprising the in-channel components, and at least a second filter of the receiver filters the wireless signal by blocking at least a portion of the in-channel components to produce a second signal comprising the out-of-channel component. An in-channel interference estimator of the receiver generates an in-channel interference estimation signal based on the second signal. And a combiner of the filter combines the first signal and the second signal to at least partially cancel the in-channel interference component of the first signal.

公开(公告)号：US20160066350A1

公开(公告)日：2016-03-03

申请号：US14476372

申请日：2014-09-03

Applicant: MOTOROLA SOLUTIONS, INC

Inventor： QICAI SHI ,  NEIYER S CORREAL ,  SPYROS KYPEROUNTAS

IPC: H04W76/00 ,  H04L5/00 ,  H04W76/04

CPC classification number: H04W76/50 ,  H04L27/2602 ,  H04L27/2626 ,  H04L27/2647

Abstract: Disclosed herein are methods and systems for embedding a supplementary data channel in LTE-based communication systems. One embodiment takes the form of a process that includes obtaining a primary data signal. The primary data signal includes a given symbol, and the given symbol includes primary payload data prepended with a given cyclic prefix. The process also includes obtaining supplementary payload data. The process also includes generating a modified primary data signal at least in part by replacing an initial portion of the given cyclic prefix with a subset of the supplementary payload data. The process also includes outputting the generated modified primary data signal for transmission via an air interface.

Abstract translation: 这里公开了用于在基于LTE的通信系统中嵌入补充数据信道的方法和系统。 一个实施例采取包括获得主数据信号的过程的形式。 主要数据信号包括一个给定的符号，给定的符号包括以给定循环前缀为前缀的主要有效载荷数据。 该过程还包括获得补充有效载荷数据。 该过程还包括至少部分地通过用补充有效载荷数据的子集替换给定循环前缀的初始部分来生成修改的主数据信号。 该过程还包括输出所生成的修改的主数据信号以经由空中接口传输。

公开(公告)号：US20150319591A1

公开(公告)日：2015-11-05

申请号：US14266223

申请日：2014-04-30

Applicant: MOTOROLA SOLUTIONS, INC

Inventor： YADUNANDANA N. RAO ,  SPYROS KYPEROUNTAS

IPC: H04W4/22 ,  H04L12/28 ,  H04W72/04

CPC classification number: H04W4/90 ,  H04B1/0053 ,  H04B1/0057 ,  H04L12/2856

Abstract: Disclosed herein are methods and systems for concurrent narrowband and broadband communication. An embodiment takes the form of a method that involves generating a narrowband public-safety-radio (PSR) signal for transmission on a downlink of a PSR network. The method further involves generating a multicarrier wideband signal for transmission on a downlink of a wireless wide area network (WWAN), where the multicarrier wideband signal includes a null DC subcarrier. The method also involves producing a combined signal that includes the superposition of (i) the narrowband PSR signal centered on a characteristic frequency of the null DC subcarrier and (ii) the multicarrier wideband signal. Additionally, the method involves transmitting the combined signal for receipt of the narrowband PSR signal at the characteristic frequency by at least one public-safety radio and receipt of the multicarrier wideband signal by at least one WWAN access terminal.

Abstract translation: 这里公开了用于并发窄带和宽带通信的方法和系统。 一个实施例采用一种方法的形式，其涉及生成用于在PSR网络的下行链路上传输的窄带公共安全无线电（PSR）信号。 该方法还涉及生成用于在无线广域网（WWAN）的下行链路上传输的多载波宽带信号，其中多载波宽带信号包括零直流副载波。 该方法还包括产生组合信号，该组合信号包括（i）以零直流副载波的特征频率为中心的窄带PSR信号和（ii）多载波宽带信号的叠加。 此外，该方法包括以特征频率通过至少一个公共安全无线电发送用于接收窄带PSR信号的组合信号，以及由至少一个WWAN接入终端接收多载波宽带信号。