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1. 发明申请

US20180309477A1 COMMUNICATION SYSTEM EMPLOYING CHAOTIC SEQUENCE BASED FREQUENCY SHIFT KEYING SPREADING SIGNALS 审中-公开
公开(公告)号：US20180309477A1
公开(公告)日：2018-10-25
申请号：US15961731
申请日：2018-04-24
申请人： Chaos Prime, Inc.
发明人： Alan Michaels
IPC分类号： H04B1/7075 , H04L27/20 , H04L27/12
CPC分类号： H04B1/70754 , H04B1/707 , H04B2001/70724 , H04B2201/7073 , H04L27/122 , H04L27/2028 , H04L27/2035 , H04L27/2092
摘要： A candidate arbitrary-phase spread spectrum modulation technique that offers similar performance to spread continuous phase modulation (CPM) waveforms and additional capabilities for programming a chosen frequency domain spectra into the resulting spread spectrum signal. The proposed chaotic-FSK waveform is derived from high-order sequence-based spread spectrum signals, with multi-bit resolution chaos-based sequences defining incremental phase words, enabling real-time efficient generation of practically non-repeating waveforms. A result of the C-FSK formulation is a parameterized hybrid modulation capable of acting like a traditional sequence-based spread spectrum signal or a traditional frequency shift keying signal depending on chosen parameters. As such, adaptation in this modulation may be easily implemented as a time-varying evolution, increasing the security of the waveform while retaining many efficiently implementable receiver design characteristics of traditional PSK modulations.

2. 发明申请

US20180109285A1 USER TERMINAL, RADIO BASE STATION AND RADIO COMMUNICATION METHOD 审中-公开
公开(公告)号：US20180109285A1
公开(公告)日：2018-04-19
申请号：US15564768
申请日：2016-04-08
申请人： NTT DOCOMO, INC.
发明人： Kazuaki Takeda , Kazuki Takeda , Shimpei Yasukawa , Satoshi Nagata
IPC分类号： H04B1/71 , H04L5/00 , H04W72/04 , H04L1/18
CPC分类号： H04B1/71 , H04B1/04 , H04B2001/70724 , H04B2201/696 , H04B2201/698 , H04B2201/70707 , H04B2201/709745 , H04J11/00 , H04J13/16 , H04L1/08 , H04L1/1893 , H04L5/0016 , H04L5/0051 , H04L27/01 , H04W52/18 , H04W72/04 , H04W72/042 , H04W88/04
摘要： The present invention is designed to reduce the decrease of spectral efficiency even when repetitious transmission is applied to communication by user terminals, in which the band to use is limited to a partial narrow band in a system band. According to one aspect of the present invention, a user terminal, in which the band to use is limited to partial narrow bands in a system band, has a receiving section that receives information related to spreading codes, a generation section that generates uplink signals, and a transmission section that repeats transmitting uplink signals in a plurality of subframes, and the generation section applies a predetermined spreading code to an uplink signal that is transmitted in part or all of the plurality of subframes, based on the information related to spreading codes.

3. 发明授权

US09504014B2 Methods and apparatuses for P-CCPCH-aided channel estimation in wireless systems 有权
标题翻译：无线系统中P-CCPCH辅助信道估计的方法和装置
公开(公告)号：US09504014B2
公开(公告)日：2016-11-22
申请号：US13692871
申请日：2012-12-03
申请人： QUALCOMM Incorporated
发明人： Jeremy M. Stein
IPC分类号： H04W72/00 , H04L25/02 , H04B1/707
CPC分类号： H04W72/005 , H04B2001/70724 , H04L25/0236
摘要： The present disclosure provides methods and apparatuses for performing channel estimation in a wireless environment using a Primary Physical Common Control Channel (P-CCPCH) to aid in channel estimation. For example, according to an example method provided by the present disclosure, a user equipment (UE) may receive a pilot signal and a Primary Physical Common Control Channel (P-CCPCH) signal from a network entity. In an aspect, the P-CCPCH signal may include initial broadcast channel (BCH) data layered thereon. Furthermore, the UE may predict estimated P-CCPCH data based on the initial BCH data. Additionally, in an aspect, the UE may estimate a channel based on at least the estimated P-CCPCH data and the pilot signal. As such, more reliable channel estimation is possible in wireless systems, such as at UE locations at the geographical periphery of a network entity serving area.
摘要翻译：本公开提供了使用主物理公共控制信道（P-CCPCH）在无线环境中执行信道估计以辅助信道估计的方法和装置。例如，根据本公开提供的示例方法，用户设备（UE）可以从网络实体接收导频信号和主物理公共控制信道（P-CCPCH）信号。在一方面，P-CCPCH信号可以包括分层在其上的初始广播信道（BCH）数据。此外，UE可以基于初始BCH数据预测估计的P-CCPCH数据。另外，在一方面，UE可以至少基于估计的P-CCPCH数据和导频信号来估计信道。因此，在诸如在网络实体服务区域的地理周边的UE位置处的无线系统中，更可靠的信道估计是可能的。

4. 发明授权

US09503153B2 Spread spectrum GMSK signals 有权
标题翻译：扩频GMSK信号
公开(公告)号：US09503153B2
公开(公告)日：2016-11-22
申请号：US14844740
申请日：2015-09-03
申请人： Airbus DS GmbH
发明人： Jean-Jacques Floch , Francis Soualle , Jan Wendel
IPC分类号： H04B1/00 , H04B1/709 , H04L27/20 , H04L27/36 , H04J13/00 , H04B1/707
CPC分类号： H04B1/709 , G01S19/02 , H04B1/707 , H04B2001/70724 , H04J13/0022 , H04L27/2017 , H04L27/364
摘要： A method for generating a spread spectrum Gaussian Minimum Shift Keying (GMSK) signal includes obtaining a sequence of data symbols for a data channel, obtaining at least one first spread spectrum code comprising a first sequence of spread spectrum chips for the data channel, obtaining at least one second spread spectrum code comprising a second sequence of spread spectrum chips for a pilot channel, and generating a sequence of pre-modulation chips by combining the sequence of data symbols for the data channel with the spread spectrum chips of the first sequence of the at least one first spread spectrum code and data symbols for the pilot channel with the spread spectrum chips of the second sequence of the at least one second spread spectrum code to a combined sequence of chips. The method further includes assigning the chips of the combined sequence of chips to the transmission channels In-Phase I and Quadrature Q of the spread spectrum GMSK signal so that not more than two consecutive pre-modulation chips generated with the same spread spectrum code are transmitted in the same transmission channel I or Q, and performing GMSK modulation using the sequence of pre-modulation chips to generate a spread spectrum GMSK signal.
摘要翻译：一种用于产生扩频高斯最小偏移键控（GMSK）信号的方法包括获得用于数据信道的数据符号序列，获得至少一个第一扩展频谱码，该第一扩展频谱码包括数据信道的第一扩展频谱序列，至少一个第二扩频码包括用于导频信道的第二扩展频谱序列，并且通过将数据信道的数据符号序列与第一序列的第一序列的扩频码片组合来产生预调制码片序列至少一个第一扩频码和用于具有至少一个第二扩频码的第二序列的扩展频谱码的导频信道的数据符号与码片的组合序列。该方法还包括将组合的码片序列的码片分配给扩频GMSK信号的传输信道In-Phase I和Quadrature Q，以便发送不多于两个使用相同扩频码生成的连续预调制码片在相同的传输信道I或Q中，并且使用预调制码片序列执行GMSK调制以产生扩频GMSK信号。

5. 发明授权

US09154263B1 Evaluation of compressed sensing in UWB systems with NBI 有权
标题翻译：用NBI对UWB系统进行压缩感知的评估
公开(公告)号：US09154263B1
公开(公告)日：2015-10-06
申请号：US14231090
申请日：2014-03-31
申请人： King Fahd University of Petroleum and Minerals
发明人： Ali Hussain Muqaibel , Saleh Ahmed Alawsh
IPC分类号： H04L1/00
CPC分类号： H04B1/7101 , H04B1/1036 , H04B1/719 , H04B2001/1063 , H04B2001/6908 , H04B2001/70724 , H04J11/00 , H04J11/0026 , H04L1/0048
摘要： A method of mitigating narrow band interference (NBI) in ultra wide band (UWB) systems operating around 10 GHz mitigates multiuser interference from IEEE 802.22 and WiMAX, wherein the multiuser interference interferes with both trained and blind UWB systems, with the trained UWB system using pilot symbol assisted modulation. The method passes a received UWB signal through a band pass filter (BPF), wherein the BPF is located at a UWB receiver and the UWB signal is a Hanning modulated pulse centered at 4 GHz frequency. The method further measures a plurality of test functions, determines a number of active users, notch filters NBI signals, based on the determined number of active users, passes the notch filtered signal through a quadratic programming algorithm, to perform joint decoding, estimates an arrival of a UWB payload, and demodulates the UWB payload, based on the estimated arrival of the UWB payload.
摘要翻译：在10 GHz以下运行的超宽带（UWB）系统中减轻窄带干扰（NBI）的方法可减轻IEEE 802.22和WiMAX的多用户干扰，其中多用户干扰会干扰受过训练和盲目的UWB系统，训练有素的UWB系统使用导频符号辅助调制。该方法通过带通滤波器（BPF）传送接收的UWB信号，其中BPF位于UWB接收机，UWB信号是以4GHz频率为中心的汉宁调制脉冲。该方法进一步测量多个测试功能，确定多个活动用户，陷波滤波器NBI信号基于所确定的有效用户数量，通过二次规划算法传递陷波滤波信号，以执行联合解码，估计到达的UWB有效载荷，并且基于UWB有效载荷的估计到达来解调UWB有效载荷。

6. 发明授权

US08811451B2 Apparatus and method for selection of a set of cells for interference cancellation in a wireless communication system 有权
标题翻译：用于在无线通信系统中选择用于干扰消除的一组小区的装置和方法
公开(公告)号：US08811451B2
公开(公告)日：2014-08-19
申请号：US13573771
申请日：2012-10-03
申请人： Qualcomm Incorporated
发明人： Ameer Dabbagh , Peter P. Ang , Rashid Ahmed Akbar Attar , Jing Sun
IPC分类号： H04B1/00 , H04B1/7107 , H04B1/707
CPC分类号： H04B1/7107 , H04B2001/70724
摘要： Apparatus and methods, in several embodiments, are disclosed for generating and managing a set of sectors, the signals received from which are utilized to generate an interference estimate for use by an interference cancellation circuit. The set of sectors generally includes a subset of the combined set of sectors in the Active Set and the Candidate Set for an access terminal. A finger of a receiver at an access terminal can be assigned to each sector in the set of sectors for interference cancellation to improve receiver operations.
摘要翻译：在几个实施例中公开了用于生成和管理一组扇区的装置和方法，所接收的信号被用于生成干扰消除电路使用的干扰估计。该组扇区通常包括活动集合中的组合集合的集合和用于接入终端的候选集合的子集。接入终端的接收机的手指可以分配给该组扇区中的每个扇区用于干扰消除以改善接收机操作。

7. 发明授权

US08488650B2 Pre-phase error correction 有权
公开(公告)号：US08488650B2
公开(公告)日：2013-07-16
申请号：US12421028
申请日：2009-04-09
申请人： John D. Kaewell
发明人： John D. Kaewell
IPC分类号： H04B1/00
CPC分类号： H04L27/20 , H04B1/62 , H04B1/69 , H04B1/7097 , H04B1/711 , H04B2001/70724 , H04B2201/696 , H04B2201/709709 , H04L2027/0022
摘要： A CDMA communication system includes a signal processor which encodes voice and nonvoice signals into data at various rates, e.g. data rates of 8 kbps, 16 kbps, 32 kbps, or 64 kbps as I and Q signals. The signal processor selects a specific data rate depending upon the type of signal, or in response to a set data rate. When the signal is received and demodulated, the baseband signal is at the chip level. Both the I and Q components of the signal are despread using the conjugate of the pn sequence used during spreading, returning the signal to the symbol level. Carrier offset correction is performed at the symbol level. A lower overall processing speed is therefore required.

8. 发明申请

US20090196330A1 PRE-PHASE ERROR CORRECTION 有权
标题翻译： PRE相位错误校正
公开(公告)号：US20090196330A1
公开(公告)日：2009-08-06
申请号：US12421028
申请日：2009-04-09
申请人： John D. Kaewell
发明人： John D. Kaewell
IPC分类号： H04B1/06
CPC分类号： H04L27/20 , H04B1/62 , H04B1/69 , H04B1/7097 , H04B1/711 , H04B2001/70724 , H04B2201/696 , H04B2201/709709 , H04L2027/0022
摘要： A CDMA communication system includes a signal processor which encodes voice and nonvoice signals into data at various rates, e.g. data rates of 8 kbps, 16 kbps, 32 kbps, or 64 kbps as I and Q signals. The signal processor selects a specific data rate depending upon the type of signal, or in response to a set data rate. When the signal is received and demodulated, the baseband signal is at the chip level. Both the I and Q components of the signal are despread using the conjugate of the pn sequence used during spreading, returning the signal to the symbol level. Carrier offset correction is performed at the symbol level. A lower overall processing speed is therefore required.
摘要翻译： CDMA通信系统包括信号处理器，其以不同的速率将语音和非发音信号编码成数据，例如，数据速率为8kbps，16kbps，32kbps或64kbps作为I和Q信号。信号处理器根据信号的类型或响应于设定的数据速率来选择特定的数据速率。当信号被接收和解调时，基带信号处于芯片级。信号的I和Q分量都使用扩展期间使用的pn序列的共轭进行解扩，将信号返回到符号级。载波偏移校正在符号级进行。因此，需要较低的总体处理速度。

9. 发明申请

US20010040914A1 CDMA system which uses pre-rotation before transmission 有权
标题翻译： CDMA系统在传输之前使用预旋转
公开(公告)号：US20010040914A1
公开(公告)日：2001-11-15
申请号：US09820014
申请日：2001-03-28
发明人： John D. Kaewell
IPC分类号： H04K001/00
CPC分类号： H04L27/20 , H04B1/62 , H04B1/69 , H04B1/7097 , H04B1/711 , H04B2001/70724 , H04B2201/696 , H04B2201/709709 , H04L2027/0022
摘要： A digital spread spectrum communication system calculates phase and frequency error on a received signal from a communicating entity during a wireless communication and pre-corrects a signal for phase and frequency error prior to transmission to that entity.
摘要翻译：数字扩频通信系统在无线通信期间计算来自通信实体的接收信号的相位和频率误差，并且在传输到该实体之前预校正用于相位和频率误差的信号。

10. 发明申请

US20160072546A1 Spread Spectrum GMSK Signals 有权
标题翻译：扩频GMSK信号
公开(公告)号：US20160072546A1
公开(公告)日：2016-03-10
申请号：US14844740
申请日：2015-09-03
申请人： Airbus DS GmbH
发明人： Jean-Jacques FLOCH , Francis SOUALLE , Jan WENDEL
IPC分类号： H04B1/709 , H04L27/36
CPC分类号： H04B1/709 , G01S19/02 , H04B1/707 , H04B2001/70724 , H04J13/0022 , H04L27/2017 , H04L27/364
摘要： A method for generating a spread spectrum Gaussian Minimum Shift Keying (GMSK) signal includes obtaining a sequence of data symbols for a data channel, obtaining at least one first spread spectrum code comprising a first sequence of spread spectrum chips for the data channel, obtaining at least one second spread spectrum code comprising a second sequence of spread spectrum chips for a pilot channel, and generating a sequence of pre-modulation chips by combining the sequence of data symbols for the data channel with the spread spectrum chips of the first sequence of the at least one first spread spectrum code and data symbols for the pilot channel with the spread spectrum chips of the second sequence of the at least one second spread spectrum code to a combined sequence of chips. The method further includes assigning the chips of the combined sequence of chips to the transmission channels In-Phase I and Quadrature Q of the spread spectrum GMSK signal so that not more than two consecutive pre-modulation chips generated with the same spread spectrum code are transmitted in the same transmission channel I or Q, and performing GMSK modulation using the sequence of pre-modulation chips to generate a spread spectrum GMSK signal.
摘要翻译：一种用于产生扩频高斯最小偏移键控（GMSK）信号的方法包括获得用于数据信道的数据符号序列，获得至少一个第一扩展频谱码，该第一扩展频谱码包括数据信道的第一扩展频谱序列，至少一个第二扩频码包括用于导频信道的第二扩展频谱序列，并且通过将数据信道的数据符号序列与第一序列的第一序列的扩频码片组合来产生预调制码片序列至少一个第一扩频码和用于具有至少一个第二扩频码的第二序列的扩展频谱码的导频信道的数据符号与码片的组合序列。该方法还包括将组合的码片序列的码片分配给扩频GMSK信号的传输信道In-Phase I和Quadrature Q，以便发送不多于两个使用相同扩频码生成的连续预调制码片在相同的传输信道I或Q中，并且使用预调制码片序列执行GMSK调制以产生扩频GMSK信号。

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