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公开(公告)号：US07876770B1
公开(公告)日：2011-01-25
申请号：US12156080
申请日：2008-05-29
申请人： Hsiao-Cheng Tang , Yungping Hsu , Guorong Hu , Weishi Feng
发明人： Hsiao-Cheng Tang , Yungping Hsu , Guorong Hu , Weishi Feng
IPC分类号： H04L12/413
摘要： Techniques for and apparatus capable of implementing packet detection and signal recognition in wireless communications systems are disclosed. In particular, the disclosed techniques and apparatus incorporate at least one of relative energy detection operable on assessment of a relative energy threshold for an inbound signal borne across an RF channel, carrier sense operable upon on assessment of at least one of a peak-to-sidelobe ratio and peak-to-peak distance defined by the inbound signal, and comparison operable upon demodulated data corresponding to the inbound signal as compared to predetermined preamble data. Clear channel assessment is performed based on determinations undertaken by one or more of the aforementioned relative energy detection, carrier sense and comparison operations.
摘要翻译： 公开了能够在无线通信系统中实现分组检测和信号识别的技术和装置。 具体地，所公开的技术和装置包括相对能量检测中的至少一个，其可操作用于对横跨RF信道承载的入站信号的相对能量阈值的评估，所述载波检测可在通过评估峰 - 旁瓣比和由峰值到峰值的距离，并且与对应于入站信号的解调数据进行比较，与预定的前导码数据相比较。 基于由上述相对能量检测，载波检测和比较操作中的一个或多个进行的确定来执行清除信道评估。
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公开(公告)号：US08565255B1
公开(公告)日：2013-10-22
申请号：US13013142
申请日：2011-01-25
申请人： Kevin Hsiao-Cheng Tang , Yungping Hsu , Guorong Hu , Weishi Feng
发明人： Kevin Hsiao-Cheng Tang , Yungping Hsu , Guorong Hu , Weishi Feng
摘要： A transceiver including: an antenna configured to a receive a first signal transmitted on a radio frequency channel; and a peak-to-sidelobe ratio determination unit configured to generate a second signal based on a ratio, in which the ratio is based on a peak value and a sidelobe value, and the peak value and the sidelobe value are determined based on a non-correlated version of the first signal. The transceiver further includes a carrier sense unit configured to, based on the second signal, generate a third signal indicating (i) whether the radio frequency channel is busy or (ii) whether the first signal is valid.
摘要翻译： 收发器，包括：天线，被配置为接收在射频信道上发送的第一信号; 以及峰值与旁瓣比确定单元，其被配置为基于所述比率基于峰值和旁瓣值生成第二信号，并且所述峰值和旁瓣值是基于非 - 相关版本的第一个信号。 所述收发机还包括载波侦听单元，被配置为基于所述第二信号，生成指示（i）所述无线电频道是否正忙的第三信号，或者（ii）所述第一信号是否有效。
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公开(公告)号：US07403539B1
公开(公告)日：2008-07-22
申请号：US10268156
申请日：2002-10-09
申请人： Hsiao-Cheng Tang , Yungping Hsu , Guorong Hu , Weishi Feng
发明人： Hsiao-Cheng Tang , Yungping Hsu , Guorong Hu , Weishi Feng
IPC分类号： H04L12/413 , H04L12/28
摘要： Techniques for and apparatus capable of implementing packet detection and signal recognition in wireless communications systems are disclosed. In particular, the disclosed techniques and apparatus incorporate at least one of relative energy detection operable on assessment of a relative energy threshold for an inbound signal borne across an RF channel, carrier sense operable upon on assessment of at least one of a peak-to-sidelobe ratio and peak-to-peak distance defined by the inbound signal, and comparison operable upon demodulated data corresponding to the inbound signal as compared to predetermined preamble data. Clear channel assessment is performed based on determinations undertaken by one or more of the aforementioned relative energy detection, carrier sense and comparison operations.
摘要翻译： 公开了能够在无线通信系统中实现分组检测和信号识别的技术和装置。 具体地，所公开的技术和装置包括相对能量检测中的至少一个，其可操作用于对横跨RF信道承载的入站信号的相对能量阈值的评估，所述载波检测可在通过评估峰 - 旁瓣比和由峰值到峰值的距离，并且与对应于入站信号的解调数据进行比较，与预定的前导码数据相比较。 基于由上述相对能量检测，载波检测和比较操作中的一个或多个进行的确定来执行清除信道评估。
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4.发明授权公开(公告)号：US07099380B1
公开(公告)日：2006-08-29
申请号：US09991473
申请日：2001-11-16
申请人： Weishi Feng , Hsiao Tang , Guorong Hu , Yungping Hsu
发明人： Weishi Feng , Hsiao Tang , Guorong Hu , Yungping Hsu
IPC分类号： H04B1/69
CPC分类号： H04B7/0814 , H04B1/707 , H04B7/0808
摘要： A method and an apparatus for selecting an antenna from an antenna diversity array in a wireless communication system are provided. The method includes the steps of modulating an incoming signal with a spread-spectrum type modulation, measuring a signal quality value for each antenna in the antenna diversity array, and selecting an antenna from the antenna diversity array on the basis of the measured signal quality values. The step of measuring a signal quality value for each antenna may include computing peak-to-average ratio values by dividing a peak sample value by an average sample value, where the average sample value is determined by averaging all of the predetermined number of sample values for each of the plurality of incoming spreading codewords, and the peak sample value is determined by selecting the maximum of all of the predetermined number of sample values for each of the plurality of incoming spreading codewords.
摘要翻译： 提供了一种从无线通信系统中的天线分集阵列中选择天线的方法和装置。 该方法包括以扩展频谱类型调制来调制输入信号的步骤，测量天线分集阵列中的每个天线的信号质量值，并且基于所测量的信号质量值从天线分集阵列中选择天线 。 测量每个天线的信号质量值的步骤可以包括通过将峰值采样值除以平均采样值来计算峰值平均比值，其中通过平均所有预定数量的采样值来确定平均采样值 对于多个输入扩展码字中的每一个，并且通过为多个输入扩展码字中的每一个选择所有预定数量的采样值的最大值来确定峰值采样值。
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公开(公告)号：US07356072B1
公开(公告)日：2008-04-08
申请号：US11546670
申请日：2006-10-12
申请人： Weishi Feng , Hsiao Tang , Guorong Hu , Yungping Hsu
发明人： Weishi Feng , Hsiao Tang , Guorong Hu , Yungping Hsu
CPC分类号： H04B7/0814 , H04B1/707 , H04B7/0808
摘要： A communication system comprises direct sequence spread-spectrum demodulator that receives first and second signals and that correlates a spreading code with a preamble of each data packet to produce a spreading codeword including a predetermined number of chips. A signal quality measurement device is responsive to the direct sequence spread-spectrum demodulator, measures signal quality values corresponding to each of the first and second signals for each data packet after correlation with the spreading code and that selects one of the first and second signals on the basis of the measured signal quality values.
摘要翻译： 通信系统包括直接序列扩频解调器，其接收第一和第二信号，并使扩展码与每个数据分组的前同步码相关，以产生包括预定数量的码片的扩频码字。 信号质量测量装置响应于直接序列扩频解调器，在与扩展码相关之后测量对应于每个数据分组的第一和第二信号中的每一个的信号质量值，并且选择第一和第二信号之一 测量信号质量值的基础。
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公开(公告)号：US07272198B1
公开(公告)日：2007-09-18
申请号：US11525327
申请日：2006-09-22
申请人： Guorong Hu , Yungping Hsu , Weishi Feng
发明人： Guorong Hu , Yungping Hsu , Weishi Feng
摘要： A method of decoding data includes receiving a symbol and determining a data rate that was used to encode the symbol. A set of correlator output signals are generated based on a first mode when a first data rate was used to encode the symbol and based on a second mode when a second data rate was used to encode the symbol. A maximum-valued signal in one of the set of correlator output signals is identified. The maximum-valued signal in one of the set of correlator output signals is modulated.
摘要翻译： 解码数据的方法包括接收符号并确定用于对符号进行编码的数据速率。 当使用第一数据速率来对符号进行编码并且当使用第二数据速率对符号进行编码时，基于第二模式，基于第一模式生成一组相关器输出信号。 识别出一组相关器输出信号中的最大值信号。 对该组相关器输出信号之一中的最大值信号进行调制。
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7.发明授权System and method of selecting antennas based on signal-to-noise ratios and signal quality values 有权基于信噪比和信号质量值选择天线的系统和方法公开(公告)号：US08488727B1
公开(公告)日：2013-07-16
申请号：US13585425
申请日：2012-08-14
申请人： Weishi Feng , Hsiao Tang , Guorong Hu , Yungping Hsu
发明人： Weishi Feng , Hsiao Tang , Guorong Hu , Yungping Hsu
IPC分类号： H04B7/10
CPC分类号： H04B7/0814 , H04B1/707 , H04B7/0808
摘要： A system includes a receiver, a processor and a decision device. The receiver receives a first signal via a first antenna, and one of the first signal and a second signal via a second antenna. The processor determines: based on the first signal as received at the first antenna, a first signal-to-noise ratio (SNR) and a first signal quality value; and based on the one of the first and second signals as received at the second antenna, a second SNR and a second signal quality value. The decision device selects one of the first and second antennas based on (i) a difference between the first SNR and the second SNR if the first SNR is greater than the second SNR, or (ii) the first signal quality value and the second signal quality value if the difference between the first SNR and the second SNR is less than a predetermined threshold.
摘要翻译： 系统包括接收器，处理器和判定装置。 接收机经由第一天线接收第一信号，经由第二天线接收第一信号和第二信号中的一个信号。 处理器确定：基于在第一天线处接收的第一信号，第一信噪比（SNR）和第一信号质量值; 并且基于在第二天线处接收的第一和第二信号之一，第二SNR和第二信号质量值。 如果第一SNR大于第二SNR，则决定装置基于（i）第一SNR和第二SNR之间的差异，或者（ii）第一信号质量值和第二信号 如果第一SNR和第二SNR之间的差小于预定阈值，则质量值。
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公开(公告)号：US07599424B1
公开(公告)日：2009-10-06
申请号：US12231341
申请日：2008-09-02
申请人： Weishi Feng , Hsiao Tang , Guorong Hu , Yungping Hsu
发明人： Weishi Feng , Hsiao Tang , Guorong Hu , Yungping Hsu
CPC分类号： H04B7/0814 , H04B1/707 , H04B7/0808
摘要： A receiver includes a demodulator that receives data packets each having a preamble and that generates spreading codewords by correlating a spreading code with the preambles of the data packets. A signal quality device determines signal quality values at a plurality of antennas for each of the data packets after correlation with corresponding ones of the spreading codes and selects one of the plurality of antennas based on the signal quality values. Each of the signal quality values includes a peak-to-average ratio value.
摘要翻译： 接收机包括：解调器，其接收每个具有前导码的数据分组，并通过将扩展码与数据分组的前同步码相关联来产生扩频码字。 信号质量装置在与对应的扩展码相关之后确定每个数据分组的多个天线处的信号质量值，并且基于信号质量值选择多个天线中的一个。 每个信号质量值包括峰均比值。
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公开(公告)号：US07421012B1
公开(公告)日：2008-09-02
申请号：US11449956
申请日：2006-06-09
申请人： Weishi Feng , Hsiao Tang , Guorong Hu , Yungping Hsu
发明人： Weishi Feng , Hsiao Tang , Guorong Hu , Yungping Hsu
IPC分类号： H04B1/707
CPC分类号： H04B7/0814 , H04B1/707 , H04B7/0808
摘要： A communication system for communicating data packets includes a receiver subsystem. The receiver subsystem comprises a first antenna, and a second antenna. A direct sequence spread-spectrum demodulator communicates with the first and second antennas. The demodulator is configured to correlate a spreading code with a preamble of each data packet to produce a spreading codeword. The spreading code includes a predetermined number of chips. A signal quality measurement device is responsive to the direct sequence spread-spectrum demodulator. The device is configured to measure signal quality values corresponding to each of the first and second antennas for each data packet after correlation with the spreading code and to select one of said first and second antennas on the basis of the measured signal quality values.
摘要翻译： 用于传送数据分组的通信系统包括接收机子系统。 接收器子系统包括第一天线和第二天线。 直接序列扩频解调器与第一和第二天线进行通信。 解调器被配置为使扩展码与每个数据分组的前导码相关以产生扩展码字。 扩展码包括预定数量的码片。 信号质量测量装置响应于直接序列扩频解调器。 该装置被配置为在与扩展码相关之后测量与每个数据分组相对应的每个第一和第二天线的信号质量值，并且基于所测量的信号质量值来选择所述第一和第二天线之一。
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公开(公告)号：US07145969B1
公开(公告)日：2006-12-05
申请号：US10092971
申请日：2002-03-05
申请人： Guorong Hu , Yungping Hsu , Weishi Feng
发明人： Guorong Hu , Yungping Hsu , Weishi Feng
摘要： An apparatus and a method for decoding data that has been Complementary Code Keying (CCK)-encoded at one of the set of first and second differing data rates. The method includes receiving a symbol, determining which of the first and second data rates was used to encode the symbol and applying the symbol to a first correlator to generate a set of correlator output signals. The first correlator generates the set of correlator output signals based on a first mode when the first data rate was used to encode the symbol and based on a second mode when the second data rate was used to encode the symbol. The method also includes identifying a maximum-valued signal in one of the set of correlator output signals and demodulating the maximum-valued signal in one of the set of correlator output signals.
摘要翻译： 一种用于对已经以第一和第二不同数据速率的集合中的一个编码的已经是互补码键控（CCK）的数据进行解码的装置和方法。 该方法包括接收符号，确定使用第一和第二数据速率中的哪一个来对符号进行编码，并将符号应用于第一相关器以产生一组相关器输出信号。 当使用第一数据速率来编码符号时，第一相关器基于第一模式生成一组相关器输出信号，并且当使用第二数据速率来对符号进行编码时，基于第二模式。 所述方法还包括在所述一组相关器输出信号之一中识别最大值信号，并在所述一组相关器输出信号中的一个解调所述最大值信号。
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