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1. 发明授权

US10015029B2 Bluetooth signal receiving method and device using improved symbol timing offset compensation 有权
公开(公告)号：US10015029B2
公开(公告)日：2018-07-03
申请号：US15390385
申请日：2016-12-23
申请人： ABOV SEMICONDUCTOR CO., LTD.
发明人： Sang Young Chu , Ki Tae Moon , Suk Kyun Hong
IPC分类号： H04L27/144 , H04B7/26 , H04L27/156
CPC分类号： H04L27/144 , H04B7/26 , H04L7/0335 , H04L7/10 , H04L27/156
摘要： Disclosed herein are a Bluetooth signal receiving device and a Bluetooth Smart receiving method. The Bluetooth signal receiving device includes a frequency shift demodulator circuit, a sampler circuit, a training bit pattern discriminator circuit, and a symbol timing offset compensation circuit. The frequency shift demodulator circuit generates a baseband signal by performing frequency shift modulation on a received signal. The sampler circuit samples the baseband signal based on a symbol timing, and generates a plurality of series of bit streams based on sampled values. The training bit pattern discriminator circuit determines whether the plurality of series of bit streams generated by the sampler circuit satisfies a training bit pattern condition. The symbol timing offset compensation circuit compensates the symbol timing of the baseband signal based on a measured error metric as an effective error metric if the plurality of series of bit streams satisfies the training bit pattern condition.

2. 发明授权

US09954702B2 Radio communication device and radio communication method 有权
公开(公告)号：US09954702B2
公开(公告)日：2018-04-24
申请号：US15415320
申请日：2017-01-25
申请人： KABUSHIKI KAISHA TOSHIBA
发明人： Hidenori Okuni , Akihide Sai , Masanori Furuta
IPC分类号： H04L27/227 , H04L7/04 , H04L27/152 , H04L27/144
CPC分类号： H04L27/227 , H04L7/041 , H04L27/144 , H04L27/152
摘要： A radio communication device has a local oscillator to generate a local signal, a first mixer to mix a binary continuous phase frequency shift keying signal and the local signal so as to generate a baseband signal, a first filter to remove an unnecessary frequency component included in the baseband signal, a delay device to delay an output signal of the first filter by one symbol, and a wave detector to demodulate the continuous phase frequency shift keying signal, wherein a modulation index m of the continuous phase frequency shift keying signal is a value expressed by m=n+k where 0

3. 发明申请

US20170195150A1 BLUETOOTH SIGNAL RECEIVING METHOD AND DEVICE USING IMPROVED SYMBOL TIMING OFFSET COMPENSATION 有权
公开(公告)号：US20170195150A1
公开(公告)日：2017-07-06
申请号：US15390385
申请日：2016-12-23
申请人： ABOV SEMICONDUCTOR CO., LTD.
发明人： Sang Young Chu , Ki Tae Moon , Suk Kyun Hong
IPC分类号： H04L27/144 , H04L27/156 , H04B7/26
CPC分类号： H04L27/144 , H04B7/26 , H04L7/0335 , H04L7/10 , H04L27/156
摘要： Disclosed herein are a Bluetooth signal receiving device and a Bluetooth Smart receiving method. The Bluetooth signal receiving device includes a frequency shift demodulator circuit, a sampler circuit, a training bit pattern discriminator circuit, and a symbol timing offset compensation circuit. The frequency shift demodulator circuit generates a baseband signal by performing frequency shift modulation on a received signal. The sampler circuit samples the baseband signal based on a symbol timing, and generates a plurality of series of bit streams based on sampled values. The training bit pattern discriminator circuit determines whether the plurality of series of bit streams generated by the sampler circuit satisfies a training bit pattern condition. The symbol timing offset compensation circuit compensates the symbol timing of the baseband signal based on a measured error metric as an effective error metric if the plurality of series of bit streams satisfies the training bit pattern condition.

4. 发明授权

US09621386B2 Extracting carrier signals from modulated signals 有权
公开(公告)号：US09621386B2
公开(公告)日：2017-04-11
申请号：US15284054
申请日：2016-10-03
申请人： TM IP HOLDINGS, LLC
发明人： Richard C. Gerdes
IPC分类号： H03D5/00 , H04L27/12 , H04L27/00
CPC分类号： H04L27/144 , H04J11/004 , H04L27/00 , H04L27/0008 , H04L27/0014 , H04L27/122
摘要： Methods, systems, and apparatus for detecting a center frequency of an input signal, the input signal including a carrier signal modulated with a modulation signal. Detecting a frequency of a second signal. Determining a difference signal between the center frequency of the input signal and the frequency of the second signal. Modifying the frequency of the second signal based on the difference signal to provide the carrier signal. And, outputting the carrier signal.

5. 发明申请

US20170026211A1 EXTRACTING CARRIER SIGNALS FROM MODULATED SIGNALS 有权
标题翻译：从调制信号提取载波信号
公开(公告)号：US20170026211A1
公开(公告)日：2017-01-26
申请号：US15284054
申请日：2016-10-03
申请人： TM IP HOLDINGS, LLC
发明人： Richard C. Gerdes
IPC分类号： H04L27/12 , H04L27/00
CPC分类号： H04L27/144 , H04J11/004 , H04L27/00 , H04L27/0008 , H04L27/0014 , H04L27/122
摘要： Methods, systems, and apparatus for detecting a center frequency of an input signal, the input signal including a carrier signal modulated with a modulation signal. Detecting a frequency of a second signal. Determining a difference signal between the center frequency of the input signal and the frequency of the second signal. Modifying the frequency of the second signal based on the difference signal to provide the carrier signal. And, outputting the carrier signal.
摘要翻译：用于检测输入信号的中心频率的方法，系统和装置，所述输入信号包括用调制信号调制的载波信号。检测第二信号的频率。确定输入信号的中心频率与第二信号的频率之间的差分信号。基于差分信号来修改第二信号的频率以提供载波信号。并且，输出载波信号。

6. 发明授权

US09461854B1 Extracting carrier signals from modulated signals 有权
公开(公告)号：US09461854B1
公开(公告)日：2016-10-04
申请号：US15077053
申请日：2016-03-22
申请人： TM IP HOLDINGS, LLC
发明人： Richard C. Gerdes
IPC分类号： H03D5/00 , H04L27/12 , H04L27/14 , H04L27/34
CPC分类号： H04L27/144 , H04J11/004 , H04L27/00 , H04L27/0008 , H04L27/0014 , H04L27/122
摘要： Methods, systems, and apparatus for detecting a center frequency of an input signal, the input signal including a carrier signal modulated with a modulation signal. Detecting a frequency of a second signal. Determining a difference signal between the center frequency of the input signal and the frequency of the second signal. Modifying the frequency of the second signal based on the difference signal to provide the carrier signal. And, outputting the carrier signal.

7. 发明授权

US09276791B2 Method and apparatus for transmitting PLCP frame in wireless local area network system 有权
公开(公告)号：US09276791B2
公开(公告)日：2016-03-01
申请号：US14560971
申请日：2014-12-04
申请人： Optis Cellular Technology, LLC
发明人： Dae Won Lee , Dong Wook Roh , Byeong Woo Kang , Yong Ho Seok , Yu Jin Noh , Bong Hoe Kim
IPC分类号： H04W4/00 , H04L27/22 , H04L27/26 , H04W84/12 , H04L1/00 , H04W28/06
CPC分类号： H04L27/261 , H03M5/12 , H04B7/0413 , H04L1/0041 , H04L1/0061 , H04L25/4904 , H04L27/14 , H04L27/144 , H04L27/148 , H04L27/1563 , H04L27/22 , H04L27/2273 , H04L27/2331 , H04L27/2332 , H04L27/2613 , H04L27/2647 , H04L2027/0028 , H04N5/4401 , H04Q1/46 , H04W28/06 , H04W84/12
摘要： A method of transmitting a Physical Layer Convergence Procedure (PLCP) frame in a Very High Throughput (VHT) Wireless Local Area Network (WLAN) system includes generating a MAC Protocol Data Unit (MPDU) to be transmitted to a destination station (STA), generating a PLCP Protocol Data Unit (PPDU) by adding a PLCP header, including an L-SIG field containing control information for a legacy STA and a VHT-SIG field containing control information for a VHT STA, to the MPDU, and transmitting the PPDU to the destination STA. A constellation applied to some of Orthogonal Frequency Division Multiplex (OFDM) symbols of the VHT-SIG field is obtained by rotating a constellation applied to an OFDM symbol of the L-SIG field.

8. 发明授权

US09270503B2 Methods, devices and systems for receiving and decoding a signal in the presence of noise using slices and warping 有权
标题翻译：用于在存在噪声的情况下使用切片和翘曲来接收和解码信号的方法，装置和系统
公开(公告)号：US09270503B2
公开(公告)日：2016-02-23
申请号：US14491447
申请日：2014-09-19
申请人： Proteus Digital Health, Inc.
发明人： Robert Fleming , Cherie Kushner , William H. McAllister , Mark Zdeblick
IPC分类号： H03K9/00 , H04L27/00 , H04L25/08 , H04L29/06 , H04L27/144 , H04L27/148 , H04L7/04
CPC分类号： H04L27/148 , H04B1/001 , H04L7/042 , H04L25/08 , H04L27/0014 , H04L27/144 , H04L69/22
摘要： A method may comprise receiving and sampling a signal. The signal may encode a data packet. A slice may be generated and stored comprising a pair of values for each of a selected number of samples of the signal representing a correlation of the signal to reference functions in the receiver. The presence of the data packet may then be detected and the detected packet decoded from the stored slices. The generating and storing slices may be carried out as the received signal is sampled. The sampled values of the signal may be discarded as the slices are generated and stored. The slice representation of the signal can be manipulated to generate filters with flexible bandwidth and center frequency.
摘要翻译：一种方法可以包括接收和采样信号。信号可以对数据分组进行编码。可以生成和存储切片，其包括用于表示信号与接收机中的参考功能的相关性的信号的选定数量的样本中的每一个的值对。然后可以检测数据分组的存在，并且从存储的切片解码检测到的分组。可以在接收信号被采样时执行生成和存储切片。当生成和存储切片时，信号的采样值可能被丢弃。信号的切片表示可以被操纵以产生具有灵活带宽和中心频率的滤波器。

9. 发明申请

US20150244552A1 RECEIVING APPARATUS AND DEMODULATION METHOD 有权
标题翻译：接收装置和解调方法
公开(公告)号：US20150244552A1
公开(公告)日：2015-08-27
申请号：US14623322
申请日：2015-02-16
申请人： Panasonic Corporation
发明人： MASAHIKO SAGISAKA
IPC分类号： H04L27/144
CPC分类号： H04L27/144 , H04L27/265 , H04L27/28
摘要： A receiver simultaneously receives a plurality of signals on a plurality of channels, which have been modulated using frequency shift keying (FSK). A calculation range controller detects a Mark frequency and a Space frequency for each channel, determines for each channel a frequency range for Fourier transform calculation of the plurality of receiving signals, based on the detected Mark frequency and the detected Space frequency and indicates the frequency range to a frequency component detector. The frequency component detector performs Fourier transformation on the determined frequency range for each channel and detects, for each channel, frequency components (FFT signals) of the plurality of receiving signals respectively. The channel shifter allocates the FFT signals output from the frequency component detector to data of channel 1 to channel N and outputs the signals to respective demodulators.
摘要翻译：接收机同时在已经使用频移键控（FSK）调制的多个信道上接收多个信号。计算范围控制器检测每个通道的标记频率和空间频率，基于检测到的标记频率和检测到的空间频率，确定每个通道的多个接收信号的傅立叶变换计算的频率范围，并指示频率范围到频率分量检测器。频率分量检测器对于每个信道在确定的频率范围上执行傅里叶变换，并且针对每个信道分别检测多个接收信号的频率分量（FFT信号）。信道移位器将从频率分量检测器输出的FFT信号分配到信道1的数据到信道N，并将信号输出到各个解调器。

10. 发明授权

US08948155B2 Systems and methods for improved digital RF transport in distributed antenna systems 有权
标题翻译：用于改进分布式天线系统中数字RF传输的系统和方法
公开(公告)号：US08948155B2
公开(公告)日：2015-02-03
申请号：US13616135
申请日：2012-09-14
申请人： Jeffrey J. Cannon , Dean Zavadsky , Philip M. Wala
发明人： Jeffrey J. Cannon , Dean Zavadsky , Philip M. Wala
IPC分类号： H04J3/00 , H04L27/00 , H04L27/144 , H04L27/233
CPC分类号： H04L27/0002 , H04L27/144 , H04L27/2338 , H04W88/085
摘要： Systems and methods for improved digital RF transport in a DAS are provided. In one embodiment, a transceiver comprises: a receive path circuit including an RF reception interface coupled to an ADC, the ADC receiving a down-converted analog RF spectrum from the RF reception interface and producing a digitized RF spectrum at an input sampling rate; a logic device receiving the digitized RF spectrum and producing a first set of baseband data samples at a first sampling rate, corresponding to a first spectral region of the analog RF spectrum and a second set of baseband data samples at a second sampling rate, corresponding to a second spectral region of the analog RF spectrum. The logic device maps the first set and second sets of baseband data samples to a respective first set and second set of timeslots of a serial data stream transport frame.
摘要翻译：提供了在DAS中改进数字RF传输的系统和方法。在一个实施例中，收发器包括：接收路径电路，包括耦合到ADC的RF接收接口，ADC从RF接收接口接收降频转换的模拟RF频谱，并以输入采样率产生数字化RF频谱; 接收数字化RF频谱并以对应于模拟RF频谱的第一频谱区域的第一采样率产生第一组基带数据样本的第二组基带数据采样的第二采样率的第二组基带数据样本，对应于模拟RF频谱的第二光谱区域。逻辑设备将第一组和第二组基带数据样本映射到串行数据流传输帧的相应的第一组和第二组时隙。

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