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公开(公告)号：US09590834B2
公开(公告)日：2017-03-07
申请号：US13486244
申请日：2012-06-01
CPC分类号： H04L27/3405 , H03F1/02 , H03F3/24 , H04B1/0475 , H04B2001/0416 , H04B2001/045 , H04L1/0003 , H04L27/2082 , H04L27/2601 , H04L27/34 , H04L27/3494 , H04L2203/00
摘要： A transmitting apparatus, includes a signal generator that generates a modulation signal by modulating transmission data using one of a plurality of modulation schemes, a first modulation scheme having a higher m-ary modulation value than other modulation schemes and a pilot signal generator generates a pilot signal. An orthogonal frequency division multiplexing (OFDM) signal generator generates an OFDM signal by selecting the modulation signal and the pilot signal according to the frame timing signal. The OFDM signal is converted to a radio signal, is amplified and is transmitted to an antenna. The pilot signal is inserted in the OFDM signal per a predetermined OFDM symbol and per a predetermined subcarrier and has a lower amplitude than a maximum amplitude of the first modulation scheme in an in-phase-quadrature (IQ) plane.
摘要翻译： 一种发送装置，包括：信号发生器，其通过使用多个调制方式之一调制发送数据来生成调制信号;第一调制方式，具有比其他调制方式更高的微分调制值，并且导频信号发生器产生导频 信号。 正交频分复用（OFDM）信号发生器通过根据帧定时信号选择调制信号和导频信号来生成OFDM信号。 OFDM信号被转换为无线电信号，被放大并被发送到天线。 导频信号按照预定的OFDM符号和每个预定的子载波插入OFDM信号中，并且具有比同相正交（IQ）平面中的第一调制方案的最大幅度更低的振幅。
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2.发明授权Transmission apparatus, reception apparatus and digital radio communication method 有权发送装置，接收装置和数字无线通信方式公开(公告)号：US09106486B2
公开(公告)日：2015-08-11
申请号：US13613407
申请日：2012-09-13
CPC分类号： H04L27/12 , H04B1/38 , H04L1/0003 , H04L1/0006 , H04L27/206 , H04L27/34 , H04L27/3455
摘要： A transmission method includes generating first symbols for transmitting data, a signal point of each of the first symbols on an in-phase and quadrature-phase plane comprising an in-phase component and a quadrature-phase component and generating a second symbol, the second symbol being a pilot symbol. The method further includes selecting an insertion pattern of the second symbol, from a plurality of predetermined insertion patterns, inserting the second symbol in the first symbols based on the selected insertion pattern to generate a transmission signal, and transmitting the transmission signal. The first symbols are generated using a modulation scheme selected from a plurality of modulation schemes.
摘要翻译： 传输方法包括产生用于发送数据的第一符号，包括同相分量和正交相分量的同相和正交相平面中的每个第一符号的信号点并产生第二符号，第二符号 符号是一个飞行员符号。 该方法还包括从多个预定插入模式中选择第二符号的插入模式，基于所选择的插入模式将第二符号插入到第一符号中以产生发送信号，并发送发送信号。 使用从多个调制方案中选择的调制方案来生成第一符号。
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3.发明申请TRANSMISSION APPARATUS, RECEPTION APPARATUS AND DIGITAL RADIO COMMUNICATION METHOD 有权传输装置，接收装置和数字无线电通信方法公开(公告)号：US20130003887A1
公开(公告)日：2013-01-03
申请号：US13613407
申请日：2012-09-13
CPC分类号： H04L27/12 , H04B1/38 , H04L1/0003 , H04L1/0006 , H04L27/206 , H04L27/34 , H04L27/3455
摘要： A transmission method includes generating first symbols for transmitting data, a signal point of each of the first symbols on an in-phase and quadrature-phase plane comprising an in-phase component and a quadrature-phase component and generating a second symbol, the second symbol being a pilot symbol. The method further includes selecting an insertion pattern of the second symbol, from a plurality of predetermined insertion patterns, inserting the second symbol in the first symbols based on the selected insertion pattern to generate a transmission signal, and transmitting the transmission signal. The first symbols are generated using a modulation scheme selected from a plurality of modulation schemes.
摘要翻译： 传输方法包括产生用于发送数据的第一符号，包括同相分量和正交相分量的同相和正交相平面中的每个第一符号的信号点，并产生第二符号，第二符号 符号是一个飞行员符号。 该方法还包括从多个预定插入模式中选择第二符号的插入模式，基于所选择的插入模式将第二符号插入到第一符号中以产生发送信号，并发送发送信号。 使用从多个调制方案中选择的调制方案来生成第一符号。
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4.发明授权Transmission apparatus, reception apparatus and digital radio communication method 有权发送装置，接收装置和数字无线通信方式公开(公告)号：US08295399B2
公开(公告)日：2012-10-23
申请号：US12206427
申请日：2008-09-08
IPC分类号： H04L27/36
CPC分类号： H04L27/12 , H04B1/38 , H04L1/0003 , H04L1/0006 , H04L27/206 , H04L27/34 , H04L27/3455
摘要： A digital radio communication method includes selecting a modulation scheme for a transmission data signal from among a plurality of modulation schemes. The transmission data signal is modulated according to the selected modulation scheme to generate a first symbol, the first symbol being a first quadrature baseband signal. Further, a pilot signal is modulated according to a specific modulation scheme to generate a second symbol, the second symbol being a second quadrature baseband signal.
摘要翻译： 数字无线电通信方法包括从多个调制方案中选择用于发送数据信号的调制方案。 传输数据信号根据所选择的调制方式被调制以产生第一符号，第一符号是第一正交基带信号。 此外，根据特定调制方案调制导频信号以产生第二符号，第二符号是第二正交基带信号。
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公开(公告)号：US20120236962A1
公开(公告)日：2012-09-20
申请号：US13486244
申请日：2012-06-01
IPC分类号： H04L27/00
CPC分类号： H04L27/3405 , H03F1/02 , H03F3/24 , H04B1/0475 , H04B2001/0416 , H04B2001/045 , H04L1/0003 , H04L27/2082 , H04L27/2601 , H04L27/34 , H04L27/3494 , H04L2203/00
摘要： A transmitting apparatus, includes a signal generator that generates a modulation signal by modulating transmission data using one of a plurality of modulation schemes, a first modulation scheme having a higher m-ary modulation value than other modulation schemes and a pilot signal generator generates a pilot signal. An orthogonal frequency division multiplexing (OFDM) signal generator generates an OFDM signal by selecting the modulation signal and the pilot signal according to the frame timing signal. The OFDM signal is converted to a radio signal, is amplified and is transmitted to an antenna. The pilot signal is inserted in the OFDM signal per a predetermined OFDM symbol and per a predetermined subcarrier and has a lower amplitude than a maximum amplitude of the first modulation scheme in an in-phase-quadrature (IQ) plane.
摘要翻译： 一种发送装置，包括：信号发生器，其通过使用多个调制方式之一调制发送数据来生成调制信号;第一调制方式，具有比其他调制方式更高的微分调制值，并且导频信号发生器产生导频 信号。 正交频分复用（OFDM）信号发生器通过根据帧定时信号选择调制信号和导频信号来生成OFDM信号。 OFDM信号被转换为无线电信号，被放大并被发送到天线。 导频信号按照预定的OFDM符号和每个预定的子载波插入OFDM信号中，并且具有比同相正交（IQ）平面中的第一调制方案的最大幅度更低的振幅。
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公开(公告)号：US20120213131A1
公开(公告)日：2012-08-23
申请号：US13459884
申请日：2012-04-30
CPC分类号： H04B7/0619 , H04B7/0617 , H04B7/086 , H04B17/11 , H04B17/21
摘要： Wireless communication apparatus adopting a time division duplex system for transmission and reception using plural antennas, deviation of amplitude and phase occurring between transmission and reception circuits is detected and corrected using a communication signal. Channel estimation means detects channel information based on reception output of N reception circuits having a one-to-one correspondence with N antennas. Correction value detection means finds a correction value for correcting deviation occurring between each of N transmission circuits and each of the N reception circuits based on the channel information. A wireless communication apparatus transmits an already known signal (training signal) to a base station with which the wireless communication apparatus conducts communications. The base station executes channel estimation based on the already known signal and generates and transmits a correction signal (probe signal). The correction value detection means of the wireless communication apparatus detects the correction value using the correction signal.
摘要翻译： 采用使用多个天线进行发送和接收的时分双工系统的无线通信装置，使用通信信号检测和校正发送和接收电路之间发生的幅度和相位的偏差。 信道估计装置根据与N个天线一一对应的N个接收电路的接收输出来检测信道信息。 校正值检测装置根据频道信息找到校正发生在N个发送电路和N个接收电路中的每一个之间的偏差的校正值。 无线通信装置向无线通信装置进行通信的基站发送已知的信号（训练信号）。 基站根据已知的信号进行信道估计，生成并发送校正信号（探测信号）。 无线通信装置的校正值检测装置使用校正信号来检测校正值。
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公开(公告)号：US08218680B2
公开(公告)日：2012-07-10
申请号：US13093301
申请日：2011-04-25
CPC分类号： H04L27/3405 , H03F1/02 , H03F3/24 , H04B1/0475 , H04B2001/0416 , H04B2001/045 , H04L1/0003 , H04L27/2082 , H04L27/2601 , H04L27/34 , H04L27/3494 , H04L2203/00
摘要： A transmitting apparatus includes a modulation signal generating section that generates a modulation signal by modulating transmission data using one of a plurality of modulation schemes. The plurality of modulation schemes include a first modulation scheme, a second modulation scheme, and a third modulation scheme, where the first modulation scheme has maximum m-ary modulation value, the second modulation scheme has a lower m-ary modulation value than the first modulation scheme, and the third modulation scheme has a lower m-ary modulation value than the second modulation scheme. The transmitting apparatus also includes a pilot signal generating section that generates a pilot signal having one of a plurality of amplitudes, the pilot signal having a lower amplitude than a maximum amplitude of the first modulation scheme. The transmitting apparatus further includes a selection section that selects the modulation signal or the pilot signal according to a frame timing signal and generates a transmission quadrature baseband signal, a radio section that converts the transmission quadrature baseband signal to a radio signal, an amplifying section that amplifies the radio signal, and an antenna section that transmits the amplified radio signal.
摘要翻译： 发送装置包括调制信号生成部，其通过使用多个调制方式之一调制发送数据来生成调制信号。 多个调制方案包括第一调制方案，第二调制方案和第三调制方案，其中第一调制方案具有最大的m元调制值，第二调制方案具有比第一调制方式更低的第m个调制方式 调制方式，并且第三调制方式具有比第二调制方案更低的微秒调制值。 发送装置还包括导频信号生成部，其生成具有多个幅度中的一个的导频信号，导频信号的幅度比第一调制方式的最大幅度小。 发送装置还包括：选择部，其根据帧定时信号选择调制信号或导频信号，生成发送正交基带信号，将发送正交基带信号转换成无线信号的无线部;放大部， 放大无线电信号，以及发射放大的无线电信号的天线部分。
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公开(公告)号：US20100266059A1
公开(公告)日：2010-10-21
申请号：US12757509
申请日：2010-04-09
CPC分类号： H04L27/3405 , H03F1/02 , H03F3/24 , H04B1/0475 , H04B2001/0416 , H04B2001/045 , H04L1/0003 , H04L27/2082 , H04L27/2601 , H04L27/34 , H04L27/3494 , H04L2203/00
摘要： A radio communication apparatus that is capable of switching modulation schemes. The radio communication apparatus includes a QPSK modulation signal generator, a QAM modulation signal generator, a transmission radio, and a common transmission power amplifier. The QPSK modulation signal generator modulates transmission data by a QPSK modulation scheme and outputs a QPSK modulation signal. The QAM modulation signal generator modulates transmission data by a QAM scheme and outputs a QAM modulation signal. The transmission radio receives the QPSK modulation signal or the QAM modulation signal and outputs a transmission signal, which is amplified by the common transmission power amplifier. The QPSK modulation signal generator and the QAM modulation signal generator each output signal component that make an average transmission power of the QAM modulation signal in the common transmission power amplifier smaller than an average transmission power of the QPSK modulation signal in the common transmission power amplifier.
摘要翻译： 一种能够切换调制方案的无线通信装置。 无线通信装置包括QPSK调制信号发生器，QAM调制信号发生器，发送无线电和公共发送功率放大器。 QPSK调制信号生成器通过QPSK调制方式来调制发送数据并输出QPSK调制信号。 QAM调制信号发生器通过QAM方式来调制发送数据并输出QAM调制信号。 发送无线电接收QPSK调制信号或QAM调制信号，并输出由公共发送功率放大器放大的发送信号。 QPSK调制信号发生器和QAM调制信号发生器使公共发送功率放大器中的QAM调制信号的平均发送功率小于公共发送功率放大器中的QPSK调制信号的平均发送功率的各输出信号分量。
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公开(公告)号：US20100118745A1
公开(公告)日：2010-05-13
申请号：US12687453
申请日：2010-01-14
IPC分类号： H04J3/00
CPC分类号： H04B7/0619 , H04B7/0617 , H04B7/086 , H04B17/11 , H04B17/21
摘要： In a wireless communication apparatus adopting a time division duplex system for executing transmission and reception using a plurality of antennas, deviation of amplitude and phase occurring between transmission and reception circuits is detected and corrected using a communication signal. Channel estimation means 105 detects channel information based on reception output of reception circuits 104-1 to 104-N provided in a one-to-one correspondence with a plurality of antennas 101-1 to 101-N. Correction value detection means 110 finds a correction value for correcting deviation occurring between each of transmission circuits 103-1 to 103-N and each of the reception circuits 104-1 to 104-N based on the channel information. A wireless communication apparatus 100 transmits an already known signal (training signal) to a base station with which the wireless communication apparatus conducts communications. The base station executes channel estimation based on the already known signal and generates and transmits a correction signal (probe signal). The correction value detection means 110 of the wireless communication apparatus 100 detects the correction value using the correction signal (probe signal).
摘要翻译： 在采用使用多个天线执行发送和接收的时分双工系统的无线通信装置中，使用通信信号来检测和校正发送和接收电路之间发生的振幅和相位的偏差。 信道估计装置105基于与多个天线101-1至101-N一一对应地提供的接收电路104-1至104-N的接收输出来检测信道信息。 修正值检测单元110基于通道信息，求出用于校正发送电路103-1〜103-N和各接收电路104-1〜104-N的偏差的校正值。 无线通信装置100向无线通信装置进行通信的基站发送已知的信号（训练信号）。 基站根据已知的信号进行信道估计，生成并发送校正信号（探测信号）。 无线通信装置100的校正值检测装置110使用校正信号（探测信号）来检测校正值。
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公开(公告)号：US07711064B2
公开(公告)日：2010-05-04
申请号：US12345297
申请日：2008-12-29
CPC分类号： H04L7/04 , H04L7/06 , H04L27/0008 , H04L27/206 , H04L27/34 , H04L27/3405 , H04L27/3455 , H04L2027/0024 , H04L2027/0087 , H04L2027/0093
摘要： In a multivalue modulation type with one pilot symbol inserted for every 3 or more symbols, signal points of each one symbol immediately before and after a pilot symbol are modulated using a modulation type different from that for pilot symbols. In this way, it is possible to suppress deterioration of the accuracy in estimating the reference phase and amount of frequency offset by pilot symbols and improve the bit error rate characteristic in the signal to noise ratio in quasi-coherent detection with symbols whose symbol synchronization is not completely established.
摘要翻译： 在每3个或更多符号插入一个导频符号的多值调制类型中，使用与导频符号不同的调制类型来调制紧接在导频符号之前和之后的每个符号的信号点。 以这种方式，可以抑制通过导频符号估计基准相位和频率偏移量的精度的劣化，并且通过符号同步为符号的符号来改善准相干检测中的信噪比中的误码率特性 不完全成立
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