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1.发明授权Method and system for controlling the minimal distance between successive errors in digital radio transmission 失效用于控制数字无线电传输中连续错误之间的最小距离的方法和系统
公开(公告)号：US5937008A
公开(公告)日：1999-08-10
申请号：US944243
申请日：1997-10-06
CPC分类号： H04L27/3405 , H04L27/34
摘要： The invention concerns a method of controlling the minimal distance between successive errors in digital radio transmissions when multilevel modulations are used. With such a method the errors are spaced according to the needs, with an extremely reduced use of hardware with respect to prior art techniques. The method is characterized in that, in transmission a differential delay, i.e. different from flow to flow, is applied to each parallel flow not yet modulated, and in reception a differential delay is applied to each demodulated flow in such a way that the overall delay applied to each flow, i.e. the sum of the delay applied in transmission and the delay applied in reception, is constant and equal for all the flows.
摘要翻译： 本发明涉及一种在使用多级调制时控制数字无线电传输中连续错误之间的最小距离的方法。 使用这种方法，根据需要，误差是相互间隔的，相对于现有技术，硬件的使用极少。 该方法的特征在于，在传输中，将不同于流到流的差分延迟施加到尚未调制的每个并行流，并且在接收中，将差分延迟施加到每个解调流，使得总延迟 应用于每个流，即在传输中施加的延迟和在接收中施加的延迟之和是所有流量的常数和相等。
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公开(公告)号：US06983143B2
公开(公告)日：2006-01-03
申请号：US09987984
申请日：2001-11-16
申请人： Morena Ferrario , Giovanni Mendola , Roberto Pellizzoni , Roberto Valtolina , Arnaldo Spalvieri
发明人： Morena Ferrario , Giovanni Mendola , Roberto Pellizzoni , Roberto Valtolina , Arnaldo Spalvieri
IPC分类号： H04Q7/20
CPC分类号： H04L1/208 , H04B17/309 , H04L1/0054 , H04L1/22
摘要： A method is described for managing and monitoring the performances in digital radio systems. The idea of the invention provides for identifying the type of distorting phenomenon that possibly affects the monitored radio channel; in this way it is also possible to univocally connect, apart from the cause of degrade, the system performances with one of the performance monitoring methods commonly usable. In practice, the invention utilizes two distinct thresholds, each specific to the related corrupting source, and above all it provides an effective technique for discriminating which of the two thresholds is to be compared with the measure of the quality chosen. In a first preferred embodiment of the invention, the type of distortion present in the channel is identified on the basis of the error autocorrelation test at the threshold decision circuit.
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3.发明授权Method and apparatus for automatic delay compensation in space diversity radio transmissions 失效用于空间分集无线电传输中的自动延迟补偿的方法和装置公开(公告)号：US07274715B2
公开(公告)日：2007-09-25
申请号：US09833666
申请日：2001-04-13
IPC分类号： H04J3/06
CPC分类号： H04B7/0845 , H04B7/0894
摘要： A method and apparatus is described for the automatic delay compensation in space diversity radio transmissions. The method includes the steps of: a) receiving a first analog signal and a second analog signal, a possible delay being between the first and second signals; b) sampling the first and the second analog signals to obtain a first digital signal and a second digital signal, respectively; c) sending the digital signals to respective equalizers, and the steps of d) digitally delaying one of the first digital signal and the second digital signal by a period equal to an integral multiple of the sampling period, and e) recoverying, at the equalization phase, the residual difference between the imposed delay and the actual one.
摘要翻译： 描述了用于空间分集无线电传输中的自动延迟补偿的方法和装置。 该方法包括以下步骤：a）接收第一模拟信号和第二模拟信号，可能的延迟在第一和第二信号之间; b）对第一和第二模拟信号进行采样以分别获得第一数字信号和第二数字信号; c）将数字信号发送到相应的均衡器，以及d）数字地延迟第一数字信号和第二数字信号之一等于采样周期的整数倍的周期，以及e）在均衡处恢复 相位，实际延迟与实际延迟之间的残差。
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公开(公告)号：US07035362B2
公开(公告)日：2006-04-25
申请号：US10090749
申请日：2002-03-06
CPC分类号： H04L1/06 , H04B7/0845 , H04L7/0083 , H04L7/0334 , H04L7/0335
摘要： Described is a method for the clock-pulse selection in a baseband combiner of a space-diversity receiver. The method provides for driving the clock recovery circuit by means of the main signal, filtered and sampled, or by the diversity signal, filtered and sampled as well, and it is characterized by calculating the average power of the equalized main signal and the average power of the equalized diversity signal; and by driving the clock recovery circuit by means of the signal chosen according to a comparison between the average powers of the signals at the output of the equalizers. Advantageously, the invention provides for a hysteresis on the power comparison and guarantees a soft change with respect to the selection performed at the preceding time of processing.
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5.发明授权Method and device for synchronization and cancellation of a plurality on interfering signals in radio transmission with frequency reuse 失效用于在具有频率重用的无线电传输中的多个干扰信号的同步和消除的方法和装置公开(公告)号：US07130605B2
公开(公告)日：2006-10-31
申请号：US10372279
申请日：2003-02-25
IPC分类号： H04B1/10
CPC分类号： H04B1/126 , H04B7/0845 , H04B7/10 , H04L25/03038 , H04L2027/0026
摘要： A method is provided for realizing, in a radio transmission system, a carrier synchronization and for cancelling one or more co-channel interfering signals from a received main signal, in which a synchronous down-conversion of the received main signal and of each of the interfering signal is performed to obtain respective intermediate frequency signals; and then a synchronous demodulation of the intermediate frequency signals so obtained is carried out.
摘要翻译： 提供了一种在无线电传输系统中实现载波同步并用于从接收到的主信号中取消一个或多个同信道干扰信号的方法，其中所接收的主信号和 执行干扰信号以获得各自的中频信号; 然后执行如此获得的中频信号的同步解调。
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6.发明申请公开(公告)号：US20120087237A1
公开(公告)日：2012-04-12
申请号：US13330990
申请日：2011-12-20
CPC分类号： H04L67/322 , H04L45/24 , H04L2001/0098
摘要： System and method for improving the protecting radio channels in transmission, according to which the payload information of the signal to be transmitted is divided into a plurality of data portions of smaller size which are then grouped into packets and the packets are labeled based on a criterion from among a plurality of criteria, said criterion being indicative of a level of priority associated to said packets. The packets are subsequently radio transmitted in accordance with their level of priority indicated by their associated label.
摘要翻译： 用于改善传输中的保护无线电信道的系统和方法，根据该系统和方法，要发送的信号的有效载荷信息被划分为较小大小的多个数据部分，然后将其分组成分组，并且分组基于标准 从多个标准中，所述标准指示与所述分组相关联的优先级。 随后，根据其相关标签所指示的优先级别，无线电发送分组。
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7.发明授权System and method for protecting payload information in radio transmission 有权用于保护无线电传输中有效载荷信息的系统和方法公开(公告)号：US08374147B2
公开(公告)日：2013-02-12
申请号：US13330990
申请日：2011-12-20
CPC分类号： H04L67/322 , H04L45/24 , H04L2001/0098
摘要： System and method for improving the protecting radio channels in transmission, according to which the payload information of the signal to be transmitted is divided into a plurality of data portions of smaller size which are then grouped into packets and the packets are labeled based on a criterion from among a plurality of criteria, said criterion being indicative of a level of priority associated to said packets. The packets are subsequently radio transmitted in accordance with their level of priority indicated by their associated label.
摘要翻译： 用于改善传输中的保护无线电信道的系统和方法，根据该系统和方法，要发送的信号的有效载荷信息被划分为较小大小的多个数据部分，然后将其分组成分组，并且分组基于标准 从多个标准中，所述标准指示与所述分组相关联的优先级。 随后，根据其相关标签所指示的优先级别，无线电发送分组。
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8.发明授权System and method for protecting payload information in radio transmission 有权用于保护无线电传输中有效载荷信息的系统和方法公开(公告)号：US08107429B2
公开(公告)日：2012-01-31
申请号：US12331122
申请日：2008-12-09
CPC分类号： H04L67/322 , H04L45/24 , H04L2001/0098
摘要： System and method for improving the protecting radio channels in transmission, according to which the payload information of the signal to be transmitted is divided into a plurality of data portions of smaller size which are then grouped into packets and the packets are labeled based on a criterion from among a plurality of criteria, said criterion being indicative of a level of priority associated to said packets. The packets are subsequently radio transmitted in accordance with their level of priority indicated by their associated label.
摘要翻译： 用于改善传输中的保护无线电信道的系统和方法，根据该系统和方法，要发送的信号的有效载荷信息被划分为较小大小的多个数据部分，然后将其分组成分组，并且分组基于标准 从多个标准中，所述标准指示与所述分组相关联的优先级。 随后，根据其相关标签所指示的优先级别，无线电发送分组。
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9.发明申请公开(公告)号：US20090185517A1
公开(公告)日：2009-07-23
申请号：US12331122
申请日：2008-12-09
CPC分类号： H04L67/322 , H04L45/24 , H04L2001/0098
摘要： System and method for improving the protecting radio channels in transmission, according to which the payload information of the signal to be transmitted is divided into a plurality of data portions of smaller size which are then grouped into packets and the packets are labeled based on a criterion from among a plurality of criteria, said criterion being indicative of a level of priority associated to said packets. The packets are subsequently radio transmitted in accordance with their level of priority indicated by their associated label.
摘要翻译： 用于改善传输中的保护无线电信道的系统和方法，根据该系统和方法，要发送的信号的有效载荷信息被划分为较小大小的多个数据部分，然后将其分组成分组，并且分组基于标准 从多个标准中，所述标准指示与所述分组相关联的优先级。 随后，根据其相关标签所指示的优先级别，无线电发送分组。
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