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公开(公告)号：US20130188578A1
公开(公告)日：2013-07-25
申请号：US13747093
申请日：2013-01-22
Applicant: QUALCOMM Incorporated
Inventor： Assaf Touboul , Raphael E. Cohen , Maxim Gotman
IPC: H04W72/04
CPC classification number: H04W72/04 , H04L25/03159 , H04L27/0008 , H04L27/2607 , H04L27/2657
Abstract: Methods, systems, and apparatuses are described for wirelessly communicating at a multi-mode wireless modem. In accordance with a disclosed method, a single carrier wireless channel may be selected from one of a line of sight (LOS) band or a non-line of sight (NLOS) band for receiving an incoming cyclically prefixed single carrier signal. The modem may be capable of receiving signals over both the LOS band and the NLOS band. A cyclic prefix length associated with the incoming single carrier signal may be tuned based on an estimated delay spread of the selected single carrier wireless channel. A cyclic prefix of the cyclic prefix length may be identified and removed from the incoming single carrier signal over the selected single carrier wireless channel. Frequency domain equalization on the incoming single carrier signal may be performed following the removal of the cyclic prefix.
Abstract translation: 描述了用于在多模式无线调制解调器中进行无线通信的方法，系统和装置。 根据所公开的方法，可以从视线（LOS）频带或非视线（NLOS）频带之一中选择单载波无线信道，用于接收进入的循环前缀单载波信号。 调制解调器可以能够在LOS频带和NLOS频带两者上接收信号。 可以基于所选择的单载波无线信道的估计的延迟扩展来调整与进入的单载波信号相关联的循环前缀长度。 循环前缀长度的循环前缀可以通过所选择的单载波无线信道从传入的单载波信号中被识别和去除。 在删除循环前缀之后，可以对进入的单载波信号进行频域均衡。
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公开(公告)号：US09813177B2
公开(公告)日：2017-11-07
申请号：US15074213
申请日：2016-03-18
Applicant: QUALCOMM Incorporated
Inventor： Maxim Gotman , Ronen Greenberger , Ziv Alina
IPC: H04J9/00 , H04L27/00 , H04B14/00 , H04L5/00 , H04W72/08 , H04L25/06 , H04L1/00 , H04L27/22 , H04L27/38
CPC classification number: H04J9/00 , H04B14/002 , H04L1/0003 , H04L1/0016 , H04L1/005 , H04L1/0086 , H04L5/005 , H04L5/006 , H04L25/067 , H04L27/0008 , H04L27/22 , H04L27/38 , H04L2027/003 , H04L2027/0055 , H04L2027/0067 , H04L2027/0085 , H04W72/082 , Y02D50/10
Abstract: Methods, systems, and devices are described for mitigating an unwanted increase in a coding rate of a wireless communication signal. A plurality of symbols including a transmitted codeword is received. The plurality of symbols including a first group of data symbols with a first modulation and coding scheme and a second group of data modulated pilot symbols with a second modulation and coding scheme. Applicable demodulation schemes are adaptively switched for each group of the plurality of symbols. The second group of data modulated pilot symbols are used in lieu of pilot symbols. The second modulation and coding scheme is a more reliable modulation and coding scheme than the first modulation and coding scheme.
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公开(公告)号：US20140177765A1
公开(公告)日：2014-06-26
申请号：US14132637
申请日：2013-12-18
Applicant: Qualcomm Incorporated
Inventor： Maxim Gotman , Ziv Alina
IPC: H04L27/156
CPC classification number: H04L27/156 , H04L1/005 , H04L1/205
Abstract: Methods, systems, and devices are described for mitigating phase noise. An output of a decoder is utilized to generate an estimation of a plurality of transmitted symbols. One or more phase errors of a plurality of received symbols are generated. The one or more phase errors are based at least in part on the estimation of the plurality of transmitted symbols. The one or more phase errors are generated by comparing angles between the plurality of received symbols and the estimation of the plurality of transmitted symbols. The output of the decoder used to generate the estimation is a plurality of a posteriori log-likelihood ratios (LLRs) of a plurality of transmitted bits. The estimation is generated by performing hard decision decoding on the output of the decoder and remodulating the hard decision decoding according to the modulation used by a transmitter on the plurality of transmitted bits.
Abstract translation: 描述了减轻相位噪声的方法，系统和设备。 利用解码器的输出来生成多个发送符号的估计。 生成多个接收符号的一个或多个相位误差。 一个或多个相位误差至少部分地基于多个发射符号的估计。 通过比较多个接收符号之间的角度和多个发射符号的估计来产生一个或多个相位误差。 用于生成估计的解码器的输出是多个发送比特的多个后验对数似然比（LLR）。 通过对解码器的输出执行硬判决解码并根据发送器在多个发送位上使用的调制来重新调制硬判决解码来产生估计。
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公开(公告)号：US09313059B2
公开(公告)日：2016-04-12
申请号：US14132648
申请日：2013-12-18
Applicant: QUALCOMM Incorporated
Inventor： Maxim Gotman , Ronen Greenberger , Ziv Alina
CPC classification number: H04J9/00 , H04B14/002 , H04L1/0003 , H04L1/0016 , H04L1/005 , H04L1/0086 , H04L5/005 , H04L5/006 , H04L25/067 , H04L27/0008 , H04L27/22 , H04L27/38 , H04L2027/003 , H04L2027/0055 , H04L2027/0067 , H04L2027/0085 , H04W72/082 , Y02D50/10
Abstract: Methods, systems, and devices are described for mitigating an unwanted increase in a coding rate of a wireless communication signal. A plurality of symbols including a transmitted codeword is received. The plurality of symbols including a first group of data symbols with a first modulation and coding scheme and a second group of data modulated pilot symbols with a second modulation and coding scheme. Applicable demodulation schemes are adaptively switched for each group of the plurality of symbols. The second group of data modulated pilot symbols are used in lieu of pilot symbols. The second modulation and coding scheme is a more reliable modulation and coding scheme than the first modulation and coding scheme.
Abstract translation: 描述了用于减轻无线通信信号的编码率的不期望的增加的方法，系统和设备。 接收包括发送码字的多个符号。 所述多个符号包括具有第一调制和编码方案的第一组数据符号和具有第二调制和编码方案的第二组数据调制导频符号。 适用的解调方案针对多个符号中的每一组自适应地切换。 使用第二组数据调制导频符号来代替导频符号。 第二调制和编码方案是比第一调制和编码方案更可靠的调制和编码方案。
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公开(公告)号：US20140226511A1
公开(公告)日：2014-08-14
申请号：US14172670
申请日：2014-02-04
Applicant: QUALCOMM Incorporated
Inventor： Maxim Gotman
CPC classification number: H04W72/042 , H04B7/0417 , H04B17/11 , H04B17/12 , H04B17/14 , H04B17/24 , H04L1/0026 , H04L1/06 , H04L1/1867 , H04L1/20 , H04L1/243 , H04W52/08
Abstract: Methods, systems, and devices are described for calibrating a transmit path of a base station. A calibration symbol of a subframe may be generated for transmission on a downlink channel. The calibration symbol of the subframe may be transmitted. The calibration symbol may include a predefined waveform to calibrate the transmit path of the base station. At least part of the subframe including the calibration symbol may be received through a dedicated feedback receive path. The transmit path may be calibrated based at least in part on the received calibration symbol. The calibration symbols may replace one or more data symbols of the subframe. Control symbols may also be transmitted during the subframe. The control symbols may include reference signals and downlink control channels. The control symbols may signal to a mobile device a zero allocation of downlink resources during the subframe.
Abstract translation: 描述了用于校准基站的发射路径的方法，系统和设备。 可以生成子帧的校准符号用于在下行链路信道上进行传输。 可以发送子帧的校准符号。 校准符号可以包括用于校准基站的发射路径的预定波形。 可以通过专用反馈接收路径来接收包括校准符号的子帧的至少一部分。 可以至少部分地基于所接收的校准符号来校准发送路径。 校准符号可以替代子帧的一个或多个数据符号。 也可以在子帧期间发送控制符号。 控制符号可以包括参考信号和下行链路控制信道。 在子帧期间，控制符号可以向移动设备发送下行链路资源的零分配。
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Patent Agency Ranking
公开(公告)号：US20130188579A1
公开(公告)日：2013-07-25
申请号：US13747123
申请日：2013-01-22
Applicant: QUALCOMM INCORPORATED
Inventor： Assaf Touboul , Maxim Gotman , Oren Matsrafi
IPC: H04B7/04
CPC classification number: H04B7/0413 , H04L25/03159 , H04L25/03891 , H04L2027/0042
Abstract: Methods, systems, and apparatuses are described for receiving a plurality of spatially multiplexed multiple-input multiple-output (MIMO) single carrier signals in a wireless modem. The signals may be received over multiple antennas associated with the modem, and a multiplication stage of frequency domain equalization may be performed on each of the signals in multiple branches of the modem. Each of the branches may be transformed to a time domain after performing the multiplication stage. An identified differential phase error between the different antennas may then be suppressed in the time domain by rotating a phase of at least one of the signals in each of a number of pairs of the branches. A summation stage of equalization may be performed on a sample-by-sample basis in the time domain on each of the signals after suppressing the identified differential phase error.
Abstract translation: 描述了用于在无线调制解调器中接收多个空间复用多输入多输出（MIMO）单载波信号的方法，系统和装置。 可以在与调制解调器相关联的多个天线上接收信号，并且可以在调制解调器的多个分支中的每个信号上执行频域均衡的乘法阶段。 在执行乘法阶段之后，可以将每个分支变换为时域。 然后可以通过旋转多对分支中的每一对中的至少一个信号的相位来在时域中抑制识别出的不同天线之间的差分相位误差。 在抑制所识别的差分相位误差之后，可以在每个信号的时域中逐个采样的基准进行均衡的求和阶段。
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公开(公告)号：US20160204888A1
公开(公告)日：2016-07-14
申请号：US15074213
申请日：2016-03-18
Applicant: QUALCOMM Incorporated
Inventor： Maxim Gotman , Ronen Greenberger , Ziv Alina
CPC classification number: H04J9/00 , H04B14/002 , H04L1/0003 , H04L1/0016 , H04L1/005 , H04L1/0086 , H04L5/005 , H04L5/006 , H04L25/067 , H04L27/0008 , H04L27/22 , H04L27/38 , H04L2027/003 , H04L2027/0055 , H04L2027/0067 , H04L2027/0085 , H04W72/082 , Y02D50/10
Abstract: Methods, systems, and devices are described for mitigating an unwanted increase in a coding rate of a wireless communication signal. A plurality of symbols including a transmitted codeword is received. The plurality of symbols including a first group of data symbols with a first modulation and coding scheme and a second group of data modulated pilot symbols with a second modulation and coding scheme. Applicable demodulation schemes are adaptively switched for each group of the plurality of symbols. The second group of data modulated pilot symbols are used in lieu of pilot symbols. The second modulation and coding scheme is a more reliable modulation and coding scheme than the first modulation and coding scheme.
Abstract translation: 描述了用于减轻无线通信信号的编码率的不期望的增加的方法，系统和设备。 接收包括发送码字的多个符号。 所述多个符号包括具有第一调制和编码方案的第一组数据符号和具有第二调制和编码方案的第二组数据调制导频符号。 适用的解调方案针对多个符号中的每一组自适应地切换。 使用第二组数据调制导频符号来代替导频符号。 第二调制和编码方案是比第一调制和编码方案更可靠的调制和编码方案。
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公开(公告)号：US20140307768A1
公开(公告)日：2014-10-16
申请号：US14226588
申请日：2014-03-26
Applicant: QUALCOMM Incorporated
Inventor： Maxim Gotman , Tal Oved
CPC classification number: H04B1/0475 , H04B7/0413 , H04L27/01 , H04L27/2636 , H04L27/364 , H04L27/3863
Abstract: Methods, systems, and devices are described for compensating for transmit I/Q impairments in a digital signal. A frequency domain version of a first one of the components may be scaled at a wireless modem according to a frequency dependent I/Q impairment compensation function to obtain a compensated frequency domain version of the first one of the components. The compensated frequency domain version of the first one of the components may be combined with a frequency domain version of a second one of the components at the wireless modem to produce a compensated frequency domain version of the digital signal. The compensated frequency domain version of the digital signal may be transformed to the time domain at the wireless modem to produce a compensated time domain version of the digital signal.
Abstract translation: 描述了用于补偿数字信号中的发射I / Q损伤的方法，系统和装置。 根据频率依赖的I / Q损伤补偿功能，可以在无线调制解调器处对第一个组件的频域版本进行缩放，以获得第一个组件的经补偿的频域版本。 可以将第一组件的经补偿的频域版本与无线调制解调器上的第二组件的频域版本组合，以产生数字信号的经补偿的频域版本。 数字信号的补偿频域版本可以被变换到无线调制解调器的时域，以产生数字信号的经补偿的时域版本。
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公开(公告)号：US20140177762A1
公开(公告)日：2014-06-26
申请号：US14132648
申请日：2013-12-18
Applicant: Qualcomm Incorporated
Inventor： Maxim Gotman , Ronen Greenberger , Ziv Alina
IPC: H04L27/16
CPC classification number: H04J9/00 , H04B14/002 , H04L1/0003 , H04L1/0016 , H04L1/005 , H04L1/0086 , H04L5/005 , H04L5/006 , H04L25/067 , H04L27/0008 , H04L27/22 , H04L27/38 , H04L2027/003 , H04L2027/0055 , H04L2027/0067 , H04L2027/0085 , H04W72/082 , Y02D50/10
Abstract: Methods, systems, and devices are described for mitigating an unwanted increase in a coding rate of a wireless communication signal. A plurality of symbols including a transmitted codeword is received. The plurality of symbols including a first group of data symbols with a first modulation and coding scheme and a second group of data modulated pilot symbols with a second modulation and coding scheme. Applicable demodulation schemes are adaptively switched for each group of the plurality of symbols. The second group of data modulated pilot symbols are used in lieu of pilot symbols. The second modulation and coding scheme is a more reliable modulation and coding scheme than the first modulation and coding scheme.
Abstract translation: 描述了用于减轻无线通信信号的编码率的不期望的增加的方法，系统和设备。 接收包括发送码字的多个符号。 所述多个符号包括具有第一调制和编码方案的第一组数据符号和具有第二调制和编码方案的第二组数据调制导频符号。 适用的解调方案针对多个符号中的每一组自适应地切换。 使用第二组数据调制导频符号来代替导频符号。 第二调制和编码方案是比第一调制和编码方案更可靠的调制和编码方案。
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公开(公告)号：US09596676B2
公开(公告)日：2017-03-14
申请号：US14172670
申请日：2014-02-04
Applicant: QUALCOMM Incorporated
Inventor： Maxim Gotman
IPC: H04L12/28 , H04W72/04 , H04B17/24 , H04L1/00 , H04L1/20 , H04L1/24 , H04B17/11 , H04B17/12 , H04B17/14 , H04W52/08 , H04B7/04 , H04L1/06 , H04L1/18
CPC classification number: H04W72/042 , H04B7/0417 , H04B17/11 , H04B17/12 , H04B17/14 , H04B17/24 , H04L1/0026 , H04L1/06 , H04L1/1867 , H04L1/20 , H04L1/243 , H04W52/08
Abstract: Methods, systems, and devices are described for calibrating a transmit path of a base station. A calibration symbol of a subframe may be generated for transmission on a downlink channel. The calibration symbol of the subframe may be transmitted. The calibration symbol may include a predefined waveform to calibrate the transmit path of the base station. At least part of the subframe including the calibration symbol may be received through a dedicated feedback receive path. The transmit path may be calibrated based at least in part on the received calibration symbol. The calibration symbols may replace one or more data symbols of the subframe. Control symbols may also be transmitted during the subframe. The control symbols may include reference signals and downlink control channels. The control symbols may signal to a mobile device a zero allocation of downlink resources during the subframe.
Abstract translation: 描述了用于校准基站的发射路径的方法，系统和设备。 可以生成子帧的校准符号用于在下行链路信道上进行传输。 可以发送子帧的校准符号。 校准符号可以包括用于校准基站的发射路径的预定波形。 可以通过专用反馈接收路径来接收包括校准符号的子帧的至少一部分。 可以至少部分地基于所接收的校准符号来校准发送路径。 校准符号可以替代子帧的一个或多个数据符号。 也可以在子帧期间发送控制符号。 控制符号可以包括参考信号和下行链路控制信道。 在子帧期间，控制符号可以向移动设备发送下行链路资源的零分配。
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