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1. 发明申请

WO2013148471A1 RECEIVER-SIDE ESTIMATION OF AND COMPENSATION FOR SIGNAL IMPAIRMENTS 审中-公开
标题翻译：接收端信号损失估计及补偿
公开(公告)号：WO2013148471A1
公开(公告)日：2013-10-03
申请号：PCT/US2013/033360
申请日：2013-03-21
申请人： QUALCOMM INCORPORATED
发明人： VARANESE, Nicola , PIETSCH, Christian , MONTOJO, Juan
IPC分类号： H04L27/38 , H04L25/02 , H04L27/26 , H04L27/00
CPC分类号： H04L25/022 , H04L1/0001 , H04L25/0232 , H04L27/2613 , H04L27/2647 , H04L27/3854 , H04L27/3863 , H04L27/3872 , H04L2027/003 , H04L2027/0073 , H04L2027/0089 , H04L2027/0093 , H04L2027/0095
摘要： A receiver receives a repeating or periodic signal and, based on the signal, estimates a carrier frequency offset for the receiver. Based on the signal and the estimated carrier offset, an I/Q mismatch for the receiver is estimated and compensation for the estimated I/Q mismatch is performed. After compensating for the estimated receiver I/Q mismatch, the carrier frequency offset is re-estimated.
摘要翻译：接收机接收重复或周期性信号，并且基于该信号估计接收机的载波频率偏移。基于信号和估计的载波偏移，估计接收机的I / Q不匹配，并执行估计的I / Q失配的补偿。在补偿估计的接收机I / Q不匹配之后，重新估计载波频率偏移。

2. 发明申请

WO2003103171A1 WIRELESS SIGNAL LOSS DETECTION 审中-公开
标题翻译：无线信号丢失检测
公开(公告)号：WO2003103171A1
公开(公告)日：2003-12-11
申请号：PCT/US2003/017369
申请日：2003-06-03
申请人： THOMSON LICENSING S.A. , CRAWLEY, Casimir, Johan
发明人： CRAWLEY, Casimir, Johan
IPC分类号： H04B1/16
CPC分类号： G11B20/10009 , G11B20/10222 , G11B2020/1461 , H04L27/16 , H04L2027/0073
摘要： An apparatus includes a receiver for receiving an audio file signal, a decoder (22) for demodulating the audio file signal; and a processor (24) for polling the decoder for a loss of a phase lock in the demodulating of the audio file signal. The processor resets and reinitializes the decoder in response to the loss in the phase lock loop. The receiver includes 900MHz radio frequency reception circuitry (23). The decoder comprises an eight-to-four modulation EFM decoder. In a preferred embodiment, the decoder outputs a digital audio stream that conforms to a known I2S audio stream format.
摘要翻译：一种装置，包括用于接收音频文件信号的接收机，用于解调音频文件信号的解码器（22）; 以及用于在解调音频文件信号中轮询解码器以消除锁相的处理器（24）。响应于锁相环的丢失，处理器重置和重新初始化解码器。接收机包括900MHz射频接收电路（23）。解码器包括八到四调制EFM解码器。在优选实施例中，解码器输出符合已知I2S音频流格式的数字音频流。

3. 发明申请

WO00065794A1 BS DIGITAL BROADCASTING RECEIVER 审中-公开
标题翻译： BS数字广播接收机
公开(公告)号：WO00065794A1
公开(公告)日：2000-11-02
申请号：PCT/JP2000/002663
申请日：2000-04-24
IPC分类号： H04J3/00 , H04L1/00 , H04L7/08 , H04L27/00 , H04L27/22 , H04L27/227 , H04L27/233 , H04L27/32 , H04N5/44 , H04N5/455 , H04N7/20 , H04N5/445
CPC分类号： H04L27/2272 , H04L27/22 , H04L2027/003 , H04L2027/0057 , H04L2027/0073 , H04L2027/0079 , H04L2027/0095 , H04N5/4401 , H04N5/455 , H04N21/426 , H04N21/4382 , H04N21/6143
摘要： A BS digital broadcasting receiver which eliminates the uncertainty of an ODU's phase noise-dependent switching point when switching a receiving system. The receiver is provided with a demodulator circuit (6A) having a carrier regenerating circuit (19A) based on demodulation data in a BPSK modulation section, and with a demodulator circuit (6B) having a carrier regenerating circuit (19B) based on demodulation data in each time-division modulation section, wherein, when a lock for carriers regenerated by the carrier regenerating circuit (19A) is maintained and carriers regenerated by the carrier regenerating circuit (19B) is locked, demodulation data, in the BPSK demodulation section and a QPSK demodulation section, output from the demodulator circuit (6A) and 8-PSK-modulated demodulation data output from the demodulator circuit (6B) are selected by a selector (7) for outputting.
摘要翻译：一种BS数字广播接收机，用于在切换接收系统时消除ODU相位噪声相关切换点的不确定性。接收机具有基于BPSK调制部分中的解调数据的载波再生电路（19A）的解调器电路（6A），并且具有基于解调数据的解调器电路（6B），具有载波再生电路（19B）每个时分调制部分，其中当保持由载波再生电路（19A）再生的载波的锁定并且由载波再生电路（19B）再生的载波被锁定时，在BPSK解调部分中的解调数据和QPSK 由解调器电路（6A）输出的解调部分和从解调器电路（6B）输出的8-PSK调制解调数据由选择器（7）选择输出。

4. 发明申请

WO2018182842A1 PHASE SHIFT KEYING (PSK) WIRELESS COMMUNICATION FOR MEDICAL IMPLANTS 审中-公开
公开(公告)号：WO2018182842A1
公开(公告)日：2018-10-04
申请号：PCT/US2018/016007
申请日：2018-01-30
申请人： QUALCOMM INCORPORATED
发明人： SHELLHAMMER, Stephen Jay
IPC分类号： H04L27/20 , A61B5/00 , H04L27/22 , H04W4/80 , H04L27/00
CPC分类号： H04W56/005 , A61B5/0024 , A61B5/0031 , H04L27/2032 , H04L27/22 , H04L2027/0034 , H04L2027/0073 , H04L2027/0095 , H04W4/80 , H04W84/18
摘要： A communication packet (PHY packet) can include a plurality of subfields with a common symbol sequence that can be used for autocorrelation. The symbol sequence of each subfield may be multiplied by a constant of either +1 or -1, based on a different bit of a maximal length sequence, which can enable cross-correlation. Thus, this packet design enables packet detection, symbol timing recovery, and carrier frequency offset estimation.

5. 发明申请

WO2014166390A1 频差估计方法、装置和系统审中-公开
公开(公告)号：WO2014166390A1
公开(公告)日：2014-10-16
申请号：PCT/CN2014/074994
申请日：2014-04-09
申请人：富士通株式会社 , 燕萌 , 曹寅文 , 陶振宁
发明人：燕萌 , 曹寅文 , 陶振宁
IPC分类号： H04L25/02
CPC分类号： H04B10/0795 , H04B10/61 , H04B10/6164 , H04L27/0014 , H04L27/26 , H04L2027/0016 , H04L2027/0046 , H04L2027/0065 , H04L2027/0073
摘要：本发明实施例提供了一种频差估计方法、装置和系统，其中，所述频差估计装置包括：第一计算单元，其根据接收到的包含多个不同长度的序列的信号计算每一个序列对应的相关值，其中，每一个序列在所述信号中被重复发送多次；第二计算单元，其根据每一个序列对应的相关值计算每一个序列对应的小数倍频差；第一确定单元，其根据每一个序列对应的小数倍频差确定每一个序列对应的整数倍频差；第二确定单元，其根据每一个序列对应的小数倍频差和每一个序列对应的整数倍频差确定总频差。通过本发明实施例的频差估计装置、方法和系统，可以实现大范围、无缝的频差估计，且实现简单，精度和可靠性较高。

6. 发明申请

WO00011824A1 SIGNAL MODULATOR AND RECEIVING CONTROL METHOD FOR THE SIGNAL MODULATOR 审中-公开
标题翻译：信号调制器的信号调制器和接收控制方法
公开(公告)号：WO00011824A1
公开(公告)日：2000-03-02
申请号：PCT/JP1998/003742
申请日：1998-08-24
IPC分类号： H04L1/20 , H04L27/00 , H04L27/20 , H04L27/26 , H04J11/00
CPC分类号： H04L27/0014 , H03J2200/02 , H04L1/20 , H04L27/2071 , H04L27/2657 , H04L27/2698 , H04L2027/0036 , H04L2027/0042 , H04L2027/0057 , H04L2027/0073
摘要： When tuning control of a receiver is started, a differential encoding section (6) calculates the phase difference by using phase detection data inputted from a discrete Fourier transform section (5), a fluctuation detecting section (11) converts a phase difference received from a differential encoding section (13) into a phase error, and a judgment section (12) judges whether a fluctuation is present or not. A correction control variable (e.g. pi /2) is specified and sent to an oscillator control section (8) when a fluctuation is judged to be present, otherwise correction control is not ordered. Tuning control is ended when the oscillator control section (8) varies the control variable according to the order of correction control from the fluctuation detecting section (11).
摘要翻译：当接收机的调谐控制开始时，差分编码部分（6）通过使用从离散付里叶变换部分（5）输入的相位检测数据来计算相位差，波动检测部分（11）将接收到的相位差差分编码部分（13）变为相位误差，并且判断部分（12）判断波动是否存在。当判定波动被存在时，指定校正控制变量（例如，pi / 2）并发送到振荡器控制部分（8），否则校正控制不被排序。当振荡器控制部分（8）根据来自波动检测部分（11）的校正控制的顺序改变控制变量时，结束控制。

7. 发明申请

WO2014000122A1 AUTOMATIC FREQUENCY CONTROL 审中-公开
标题翻译：自动频率控制
公开(公告)号：WO2014000122A1
公开(公告)日：2014-01-03
申请号：PCT/CN2012/000886
申请日：2012-06-28
申请人： INTEL MOBILE COMMUNICATIONS GMBH , FU, Yanzeng , LEI, Jie , TANG, Yunshuai , ZHANG, Hong , WANG, Zhen , XU, Zhe
发明人： FU, Yanzeng , LEI, Jie , TANG, Yunshuai , ZHANG, Hong , WANG, Zhen , XU, Zhe
IPC分类号： H04L27/00 , H03J7/02
CPC分类号： H03L7/099 , H03J7/04 , H04B17/20 , H04L25/4902 , H04L27/0014 , H04L27/2672 , H04L2027/0055 , H04L2027/0073 , H04L2027/0095
摘要： An automatic frequency control device (216), a method (400) for automatic frequency control, a receiver (202), a mobile station (200) and a non-transitory computer-readable digital storage medium are provided. The automatic frequency control device (216) comprises a quality calculation unit (224) to calculate quality of a received signal, a state machine controller (226) to generate a control signal based on the calculated quality of the received signal, and a filter (220) to filter an estimated frequency offset of the received signal based on the control signal.
摘要翻译：提供了自动频率控制装置（216），用于自动频率控制的方法（400），接收机（202），移动台（200）和非暂时计算机可读数字存储介质。自动频率控制装置（216）包括：质量计算单元（224），用于计算接收信号的质量;状态机控制器（226），用于基于所计算的接收信号质量生成控制信号;以及滤波器（ 220）基于控制信号对接收信号的估计频率偏移进行滤波。

8. 发明申请

WO2013149247A1 PAIRED OFDM PILOT SYMBOLS 审中-公开
标题翻译：配对的OFDM引导符号
公开(公告)号：WO2013149247A1
公开(公告)日：2013-10-03
申请号：PCT/US2013/034825
申请日：2013-04-01
申请人： QUALCOMM INCORPORATED
发明人： VARANESE, Nicola , PIETSCH, Christian B. , MONTOJO, Juan , JOETTEN, Christoph
IPC分类号： H04L25/02 , H04L27/26 , H04L27/38 , H04L27/00
CPC分类号： H04L25/022 , H04L1/0001 , H04L25/0232 , H04L27/2613 , H04L27/2647 , H04L27/3854 , H04L27/3863 , H04L27/3872 , H04L2027/003 , H04L2027/0073 , H04L2027/0089 , H04L2027/0093 , H04L2027/0095
摘要： Successive pairs of OFDM symbols are transmitted by an OFDM transmitter and received by an OFDM receiver. The successive pairs include a first pair of OFDM symbols. First and second OFDM symbols of the first pair both include pilot symbols on two subcarriers that are symmetric about a center carrier frequency. The two subcarriers are the same for the first and second OFDM symbols. The pilot symbols on the two subcarriers for the first and second OFDM symbols compose an orthogonal matrix. The OFDM receiver estimates frequency responses at frequencies including the frequencies of the two subcarriers and compensates for signal impairment based at least in part on the estimated frequency responses.
摘要翻译： OFDM符号的连续对由OFDM发射机发射并由OFDM接收机接收。连续对包括第一对OFDM符号。第一对的第一和第二OFDM符号都包括关于中心载波频率对称的两个子载波上的导频符号。两个子载波对于第一和第二OFDM符号是相同的。用于第一和第二OFDM符号的两个子载波上的导频符号构成正交矩阵。 OFDM接收机在包括两个子载波的频率的频率处估计频率响应，并且至少部分地基于所估计的频率响应来补偿信号损伤。

9. 发明申请

WO2007148267A1 METHOD AND APPARATUS FOR ESTIMATING CARRIER FREQUENCY OFFSET 审中-公开
标题翻译：用于估计载波频率偏移的方法和装置
公开(公告)号：WO2007148267A1
公开(公告)日：2007-12-27
申请号：PCT/IB2007/052267
申请日：2007-06-14
申请人： NXP B.V. , LI, Yan
发明人： LI, Yan
IPC分类号： H04L27/00
CPC分类号： H04L27/0014 , H04L7/042 , H04L2027/003 , H04L2027/0073 , H04L2027/0095
摘要： In order to improve precision for estimating carrier frequency offset and reduce computing load, the present invention provides a method for estimating carrier frequency offset, which comprises steps of calculating a plurality of corresponding intermediate CFOs, respectively, based on one received sync sequence and one pre-stored sync sequence through multi-step calculation, wherein, in each step, one corresponding intermediate CFO is calculated based on said received sync sequence and said pre-stored sync sequence; and weighting said plurality of intermediate CFOs in accordance with channel quality of a channel transmitting said received sync sequence to generate one final CFO. Each of the selected sequence segments may have a length and a mutual distance which are both, at its maximum, the full length of the sync sequence minus 1 so as to improve precision for the intermediate CFOs. Further, the estimation precision for the final CFO is improved by considering the impact of quality difference of reception channels on the intermediate CFOs.
摘要翻译：为了提高估计载波频率偏移的精度并降低计算负荷，本发明提供了一种用于估计载波频率偏移的方法，该方法包括以下步骤：基于一个接收到的同步序列和一个预分频来计算多个相应的中间CFO 其中，在每个步骤中，基于所述接收到的同步序列和所述预先存储的同步序列来计算一个对应的中间CFO; 以及根据发送所述接收到的同步序列的信道的信道质量对所述多个中间CFO进行加权，以产生一个最终CFO。所选择的序列片段中的每一个可以具有在同步序列的全长减去1的最大值的长度和相互距离，以便提高中间CFO的精度。此外，通过考虑接收渠道的质量差异对中间CFO的影响，提高了最终CFO的估计精度。

10. 发明申请

WO00028710A1 CARRIER PHASE ESTIMATOR DEVICE AND DEMODULATOR 审中-公开
标题翻译：载波相位估计器和解调器
公开(公告)号：WO00028710A1
公开(公告)日：2000-05-18
申请号：PCT/JP1999/002805
申请日：1999-05-27
IPC分类号： H04L27/00 , H04L27/227 , H04L27/22
CPC分类号： H04L27/227 , H04L2027/0048 , H04L2027/0067 , H04L2027/0073 , H04L2027/0081
摘要： A demodulator comprises nonlinear processing means (20) for removing the modulated components from received baseband signals to obtain unmodulated complex data; first moving average means (25a) for determining the moving average of unmodulated complex data; means (24) for determining the carrier phase from the vector angle represented by the moving average; and means (5) for determining filter bandwidth to control the bandwidth of the first moving average means (25a) by using the data of past r symbols in unmodulated complex data.
摘要翻译：解调器包括非线性处理装置（20），用于从已接收的基带信号中去除调制分量以获得未调制的复数数据; 用于确定未调制复数数据的移动平均的第一移动平均装置（25a）; 用于根据移动平均值表示的向量角确定载波相位的装置（24）; 以及用于通过使用未调制的复数数据中的过去r个符号的数据来确定滤波器带宽以控制第一移动平均装置（25a）的带宽的装置（5）。

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