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公开(公告)号：US06266365B1
公开(公告)日：2001-07-24
申请号：US09572625
申请日：2000-05-17
申请人： Zhaocheng Wang , Tao Zhang , Noriyoshi Ito , Hiroki Sugimoto
发明人： Zhaocheng Wang , Tao Zhang , Noriyoshi Ito , Hiroki Sugimoto
IPC分类号： A61F206
CPC分类号： H04B1/7085 , H04B1/709
摘要： A code division multiple access (CDMA) receiver for receiving an encoded CDMA signal is disclosed, the receiver comprising an analog to digital converter for sampling a received signal and passing the thus sampled and digitized signal to a CDMA decoder, the converter receiving a sampling clock signal at a sampling frequency, the phase of the clock signal being adjustable. The CDMA decoder includes a plurality of sets of correlators, each set having a different base delay, each base delay being adjustable.
摘要翻译： 公开了一种用于接收编码的CDMA信号的码分多址（CDMA）接收机，该接收机包括一个模数转换器，用于对接收到的信号进行采样，并将这样采样和数字化的信号传送到CDMA解码器，该转换器接收采样时钟 信号采样频率，时钟信号的相位可调。 CDMA解码器包括多组相关器，每组相关器具有不同的基极延迟，每个基极延迟是可调节的。
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52.发明授权公开(公告)号：US08553812B2
公开(公告)日：2013-10-08
申请号：US12638369
申请日：2009-12-15
申请人： Qi Wang , Zhaocheng Wang
发明人： Qi Wang , Zhaocheng Wang
CPC分类号： H04L7/042
摘要： Discussed herein is a synchronization structure for a receiving apparatus for receiving signals in a communication system, in which the signals are transmitted in frames, each frame comprising a synchronization part with synchronization sequences, wherein at least one of the synchronization sequences has a different phase than the other synchronization sequences. The synchronization structure includes a correlation unit configured to perform a correlation on the synchronization part, a peak detection unit configured to detect candidate correlation peaks and the correlation result, and a correlation peak detection unit configured to detect a correlation peak among said candidate correlation peaks on the basis of a confidence value and phase information. Further, a corresponding synchronization method that enables frame synchronization with a higher performance in low signal to noise ratio environments is also discussed.
摘要翻译： 这里讨论的是用于在通信系统中接收信号的接收装置的同步结构，其中以帧的形式发送信号，每帧包括具有同步序列的同步部分，其中至少一个同步序列具有与 其他同步序列。 所述同步结构包括被配置为对所述同步部进行相关的相关单元，配置为检测候选相关峰的峰值检测单元和所述相关结果，以及相关峰检测单元，被配置为检测所述候选相关峰中的相关峰， 置信度和相位信息的基础。 此外，还讨论了在低信噪比环境中实现具有更高性能的帧同步的相应同步方法。
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公开(公告)号：US08526522B2
公开(公告)日：2013-09-03
申请号：US13238961
申请日：2011-09-21
申请人： Zhaocheng Wang , Masahiro Uno
发明人： Zhaocheng Wang , Masahiro Uno
IPC分类号： H04L27/28
CPC分类号： H04L25/03159 , H04L27/2607 , H04L2025/03522
摘要： A signal generator and signal processor for single carrier wireless communication systems with frequency domain equalizer operable to use pseudorandom-noise sequences for cyclic prefix, the pseudorandom-noise sequences for coarse timing synchronization, channel estimation, carrier synchronization, signal-noise-ration estimation and channel equalization.
摘要翻译： 一种用于具有频域均衡器的单载波无线通信系统的信号发生器和信号处理器，其可操作以使用用于循环前缀的伪随机噪声序列，用于粗定时同步的伪随机噪声序列，信道估计，载波同步，信号噪声比估计和 信道均衡。
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54.发明授权Receiving apparatus and method with no oversampling analog to digital conversion 失效没有过采样模数转换的接收装置和方法公开(公告)号：US08401125B2
公开(公告)日：2013-03-19
申请号：US12631070
申请日：2009-12-04
CPC分类号： H04L7/042
摘要： A receiving apparatus and a receiving method for receiving signals in a wireless communication system are presented, the signals including a dedicated channel estimation sequence. The apparatus includes an analog to digital converter that converts received signals into digital samples with a sampling rate identical to a symbol rate of the received signals, a channel estimation unit that performs a channel estimation based on the dedicated channel estimation sequence comprised in a digital samples of the received signals, an evaluation unit that evaluates the channel estimation result from the channel estimation unit, and a control unit that controls a phase of the sampling rate of the analog to digital converter based on an evaluation of the channel estimation result. The present invention further relates to a corresponding receiving method.
摘要翻译： 提出了一种用于在无线通信系统中接收信号的接收装置和接收方法，所述信号包括专用信道估计序列。 该装置包括模拟数字转换器，其以接收信号的符号率将接收到的信号转换为数字样本，信道估计单元，其基于包含在数字样本中的专用信道估计序列执行信道估计 的评估单元，评估单元，其评估来自信道估计单元的信道估计结果;以及控制单元，其基于信道估计结果的评估来控制模数转换器的采样率的相位。 本发明还涉及相应的接收方法。
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55.发明授权Method for transmitting signals in a wireless communication system and communication system 失效在无线通信系统和通信系统中发送信号的方法公开(公告)号：US08059743B2
公开(公告)日：2011-11-15
申请号：US11951618
申请日：2007-12-06
申请人： Zhaocheng Wang , Masahiro Uno
发明人： Zhaocheng Wang , Masahiro Uno
IPC分类号： H04B7/02
CPC分类号： H04B7/0695 , H04B7/0408 , H04B7/088
摘要： A method for transmitting signals in a wireless communication system including the steps of (a) transmitting and receiving the signals subsequently via transmission paths thereby allowing an estimation of channel quality of each transmission path, (b) selecting on a basis of the estimated channel quality several transmission paths as candidates for a communication channel, (c) repeating step (a) at least once under different transmission and/or reception conditions for the several transmission paths selected in step (b), and (d) selecting on basis of the estimated channel quality a small number of transmission paths out of the several transmission paths as candidates for a communication channel.
摘要翻译： 一种用于在无线通信系统中发送信号的方法，包括以下步骤：（a）经由传输路径随后发送和接收信号，从而允许估计每个传输路径的信道质量，（b）基于所估计的信道质量进行选择 几个传输路径作为通信信道的候选，（c）在步骤（b）中选择的若干传输路径的不同传输和/或接收条件下重复步骤（a）至少一次，以及（d）基于 估计的信道质量是作为通信信道的候选的几个传输路径中的少数传输路径。
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56.发明授权Transmitting device, receiving device and method for establishing a wireless communication link 有权用于建立无线通信链路的发送设备，接收设备和方法公开(公告)号：US08013790B2
公开(公告)日：2011-09-06
申请号：US12958895
申请日：2010-12-02
申请人： Masahiro Uno , Zhaocheng Wang
发明人： Masahiro Uno , Zhaocheng Wang
IPC分类号： H04B7/00
摘要： A method for establishing a wireless communication link between a first communication device having a beam antenna to be steered to different positions and a second communication device. The method includes transmitting a link request signal from the first communication device to the second communication device via the beam antenna. The link request signal includes information relating to a current position of the beam antenna. The method further includes obtaining, in case the link request signal is received in the second communication device, channel quality information representative of a current transmission path.
摘要翻译： 一种用于在具有待转向不同位置的波束天线的第一通信设备和第二通信设备之间建立无线通信链路的方法。 该方法包括经由波束天线从第一通信设备向第二通信设备发送链路请求信号。 链路请求信号包括与波束天线的当前位置有关的信息。 该方法还包括在第二通信设备中接收到链路请求信号的情况下获得表示当前传输路径的信道质量信息。
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57.发明授权Backscatter interrogator reception method and interrogator for a modulated backscatter system 有权用于调制后向散射系统的反向散射询问器接收方法和询问器公开(公告)号：US07995685B2
公开(公告)日：2011-08-09
申请号：US11210229
申请日：2005-08-23
申请人： Zhaocheng Wang , Ralf Böhnke , Jochen Rebmann
发明人： Zhaocheng Wang , Ralf Böhnke , Jochen Rebmann
CPC分类号： G06K7/0008 , H04B1/525
摘要： In a backscatter interrogator reception method, a continuous carrier signal with a frequency fc is sent from an interrogator to a tag device over a wireless link, the tag device transmits data to the interrogator using a modulated backscatter signal, and the received modulated backscatter signal is demodulated by the interrogator to retrieve the data transmitted from the tag device. According to the present invention, the interrogator estimates the phase and the amplitude of an inband interferer signal contained in the received modulated backscatter signal, generates a cancellation signal having the opposite phase and the same amplitude as the estimation of the inband interferer signal, and combines said cancellation signal with the received backscatter signal in order to reduce the influence of the inband interferer signal. In addition, a two-stage interferer cancellation scheme is proposed.
摘要翻译： 在反向散射询问器接收方法中，通过无线链路将具有频率fc的连续载波信号从询问器发送到标签装置，标签装置使用调制反向散射信号向询问器发送数据，并且接收的调制反向散射信号为 由询问器解调以检索从标签设备发送的数据。 根据本发明，询问器估计包含在接收的调制反向散射信号中的带内干扰信号的相位和幅度，产生与带内干扰信号的估计具有相反相位和相同振幅的消除信号，并且组合 所述抵消信号具有接收的反向散射信号，以便减小带内干扰信号的影响。 另外，提出了两级干扰消除方案。
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公开(公告)号：US20110182378A1
公开(公告)日：2011-07-28
申请号：US13084302
申请日：2011-04-11
CPC分类号： H04L27/2613 , H04B7/0669 , H04L1/0618 , H04L1/0625 , H04L1/0668 , H04L5/0007 , H04L5/0023 , H04L5/0048 , H04L25/0226 , H04L27/2601 , H04L27/2626
摘要： A transmitting device for transmitting data and pilot symbols in an OFDM transmission system having transmission antennas. The device includes symbol generating means for generating data and pilot symbols, means for transmitting the data and pilot symbols using subcarriers of the OFDM system. The symbol generating means generates a first and second type pilot symbol, the second having an inverted value of the first so that a first pilot symbol pattern to be transmitted by using one of said plurality of transmission antennas has a different pattern in the frequency and time dimension from a second pilot symbol pattern to be transmitted by using another transmission antenna. First and second pilot symbols are comprised in respective first and second pilot symbol patterns, where at least some of the first and second pilot symbols have the same time allocation and being alternately identical and inverted to each other.
摘要翻译： 一种发送装置，用于在具有发送天线的OFDM传输系统中发送数据和导频符号。 该装置包括用于产生数据和导频符号的符号产生装置，用于使用OFDM系统的子载波发送数据和导频符号的装置。 符号产生装置产生第一和第二类型导频符号，第二类型具有第一类型的导频符号，其中第二导频符号具有第一类型的反相值，使得通过使用所述多个发射天线之一发射的第一导频符号模式在频率和时间上具有不同的模式 从第二导频符号图案的尺寸，通过使用另一发送天线发送。 第一和第二导频符号包括在相应的第一和第二导频符号模式中，其中第一和第二导频符号中的至少一些具有相同的时间分配并且彼此交替地相同并且相反。
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公开(公告)号：US07664205B2
公开(公告)日：2010-02-16
申请号：US11237342
申请日：2005-09-28
申请人： Zhaocheng Wang , Masahiro Uno
发明人： Zhaocheng Wang , Masahiro Uno
CPC分类号： H04L27/14 , H04L27/144
摘要： A frequency-shift-keying demodulator including a phase shifter for shifting the phase of an input signal by a predetermined degree and outputting a shifted signal, a combining unit for combining the input signal and the shifted signal and for outputting a corresponding signal, and a low-pass filter for filtering the signal output by the combining unit and outputting a low-pass filtered signal, the bandwidth of the low-pass filter being matched with the bandwidth of a data signal included in the input signal, such that the combining unit includes at least one adder for adding the input signal and the shifted signal, and outputting an added signal, and at least one square law detector for receiving the added signal output by the adder and outputting a squared signal which is the square of the added signal, wherein the combining unit outputs the squared signal to the low-pass filter.
摘要翻译： 一种频移键控解调器，包括用于将输入信号的相位偏移预定程度并输出移位信号的移相器，用于组合输入信号和移位信号并输出相应信号的组合单元，以及 低通滤波器，用于对由组合单元输出的信号进行滤波并输出低通滤波信号，低通滤波器的带宽与包括在输入信号中的数据信号的带宽相匹配，使得组合单元 包括至少一个加法器，用于将输入信号和移位的信号相加，并输出相加的信号;以及至少一个平方律检测器，用于接收由加法器输出的相加信号，并输出作为相加信号的平方的平方信号 ，其中所述组合单元将所述平方信号输出到所述低通滤波器。
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公开(公告)号：US07664009B2
公开(公告)日：2010-02-16
申请号：US11608685
申请日：2006-12-08
CPC分类号： H04L27/2613 , H04B7/0669 , H04L1/0618 , H04L1/0625 , H04L1/0668 , H04L5/0007 , H04L5/0023 , H04L5/0048 , H04L25/0226 , H04L27/2601 , H04L27/2626
摘要： The present invention relates to a transmitting device and a receiving device in a wireless orthogonal frequency division multiplex (OFDM) communication system with space time transmit diversity (STTD). Further, the present invention relates to a channel estimation method for performing a channel estimation in such a wireless communication system, in which the transmitting device comprises a first and a second antenna for transmitting signals with space time transmit diversity. The first and the second antenna means are arranged spaced apart from each other in a space diversity arrangement, whereby first and second pilot symbols are transmitted via said first and said second antenna mean, respectively. Some of the second pilot symbols are orthogonal to corresponding ones of the first pilot symbols, so that a channel estimation to separately determine the transmission quality of signals transmitted from the first and the second antenna means, respectively, can be performed in a receiving device which receives the signals with only one single antenna.
摘要翻译： 本发明涉及具有时空发射分集（STTD）的无线正交频分复用（OFDM）通信系统中的发送装置和接收装置。 此外，本发明涉及一种用于在这种无线通信系统中执行信道估计的信道估计方法，其中发送设备包括用于发送具有空时传输分集的信号的第一和第二天线。 第一和第二天线装置在空间分集装置中彼此间隔布置，由此分别经由所述第一和第二天线平均值发送第一和第二导频符号。 第二导频符号中的一些与第一导频符号中的相应导频符号正交，从而可以在接收装置中执行分别确定从第一和第二天线装置发送的信号的传输质量的信道估计， 只用一个天线接收信号。
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