公开(公告)号：US20170012802A1

公开(公告)日：2017-01-12

申请号：US15270286

申请日：2016-09-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Liangchuan Li ,  Ling Liu

IPC: H04L25/03

CPC classification number: H04L25/03012 ,  H04L25/03254 ,  H04L25/03261 ,  H04L25/03834

Abstract: A method for sending and receiving a signal is disclosed, and a corresponding device and system. The method includes performing constellation mapping on a data stream to obtain a mapped signal, and performing pre-filtering on the mapped signal to convert the mapped signal into a narrowband signal filtered signal. The pre-filtering is finite impulse response filtering. A bandwidth of the narrowband signal filtered signal is less than bandwidth of the mapped signal, and the narrowband signal filtered signal is a baud rate signal. The method also includes performing waveform forming according to the narrowband signal filtered signal to obtain a shaped signal, and performing digital-to-analog conversion on the shaped signal to convert a shaped second signal into an analog signal, and sending the analog signal.

Abstract translation: 公开了一种用于发送和接收信号的方法，以及相应的设备和系统。 该方法包括在数据流上执行星座映射以获得映射的信号，以及对所映射的信号执行预滤波以将映射的信号转换成窄带信号滤波的信号。 预滤波是有限脉冲响应滤波。 窄带信号滤波信号的带宽小于映射信号的带宽，窄带信号滤波信号是波特率信号。 该方法还包括根据窄带信号滤波信号执行波形形成以获得整形信号，并对成形信号执行数模转换，将形状的第二信号转换为模拟信号，并发送模拟信号。

公开(公告)号：US09467311B2

公开(公告)日：2016-10-11

申请号：US15078717

申请日：2016-03-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Liangchuan Li ,  Ling Liu

IPC: H03H7/30 ,  H04L25/03

CPC classification number: H04L25/03012 ,  H04L25/03254 ,  H04L25/03261 ,  H04L25/03834

Abstract: A method for sending and receiving a signal is disclosed, and a corresponding device and system. The method includes performing constellation mapping on a data stream to obtain a mapped signal, and performing pre-filtering on the mapped signal to convert the mapped signal into a narrowband signal filtered signal. The pre-filtering is finite impulse response filtering. A bandwidth of the narrowband signal filtered signal is less than bandwidth of the mapped signal, and the narrowband signal filtered signal is a baud rate signal. The method also includes performing waveform forming according to the narrowband signal filtered signal to obtain a shaped signal, and performing digital-to-analog conversion on the shaped signal to convert a shaped second signal into an analog signal, and sending the analog signal.

Abstract translation: 公开了一种用于发送和接收信号的方法，以及相应的设备和系统。 该方法包括在数据流上执行星座映射以获得映射的信号，以及对所映射的信号执行预滤波以将映射的信号转换成窄带信号滤波的信号。 预滤波是有限脉冲响应滤波。 窄带信号滤波信号的带宽小于映射信号的带宽，窄带信号滤波信号是波特率信号。 该方法还包括根据窄带信号滤波信号执行波形形成以获得整形信号，并对成形信号执行数模转换，以将形状的第二信号转换为模拟信号，并发送模拟信号。

公开(公告)号：US20160134449A1

公开(公告)日：2016-05-12

申请号：US14995855

申请日：2016-01-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ling Liu ,  Liangchuan Li

IPC: H04L27/00

CPC classification number: H04L27/0014 ,  H04B10/6165 ,  H04L27/3827 ,  H04L2027/0046 ,  H04L2027/0067 ,  H04L2027/0095

Abstract: The present invention provides a cycle-slip detection method and apparatus, and a receiver. If an absolute value of a first difference obtained by subtracting a phase of a first symbol in a kth training sequence cycle from a phase of a last symbol in a (k−1)th training sequence cycle in a received signal is greater than a cycle-slip determining threshold, it is determined that a cycle-slip occurs in the kth or (k−1)th training sequence cycle. Further, if a second difference obtained by subtracting a phase of the first symbol in the (k+1)th training sequence cycle from a phase of the last symbol in the kth training sequence cycle is greater than the cycle-slip determining threshold, and signs of the first difference and the second difference are opposite, it is determined that a cycle-slip occurs in all symbols in the kth training cycle.

Abstract translation: 本发明提供一种循环滑移检测方法和装置以及接收器。 如果通过从接收信号中的第（k-1）训练序列周期中的最后一个符号的相位减去第k个训练序列周期中的第一符号的相位获得的第一差的绝对值大于循环 确定在第k或第（k-1）训练序列周期中发生周期滑移。 此外，如果通过从第k个训练序列周期中的最后一个符号的相位减去第（k + 1）个训练序列周期中的第一符号的相位获得的第二差异大于循环滑移确定阈值， 第一差异和第二差异的符号相反，确定在第k个训练周期中的所有符号中出现周期滑移。