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公开(公告)号：US08477860B2
公开(公告)日：2013-07-02
申请号：US12869816
申请日：2010-08-27
IPC分类号： H04L27/01
CPC分类号： H04L27/2647 , H04L25/03292 , H04L25/03318 , H04L2025/03414
摘要： Decoding a received Orthogonal Frequency Division Multiplex (OFDM) signal that occupies a first set of subcarriers in a radio frequency spectrum includes ascertaining an interference model that represents interference occurring in the first set of subcarriers caused by a transmitted OFDM signal that occupies a second set of subcarriers in the radio frequency spectrum. A set of scaled soft values is produced that represents information conveyed by the received OFDM signal over the first set of subcarriers, wherein each scaled soft value in the set of scaled soft values corresponds to a respective one of the subcarriers in the first set of subcarriers, and wherein a scaling amount applied to each of the scaled soft values is based on a corresponding level of interference in said respective one of the subcarriers as indicated by the interference model. A decoding process is performed that generates detected data from the scaled soft values.
摘要翻译： 解码在无线电频谱中占用第一组子载波的接收的正交频分多路复用（OFDM）信号包括确定干扰模型，其表示由发送的OFDM信号引起的第一组子载波中所发生的干扰，所述OFDM信号占用第二组 无线电频谱中的子载波。 产生一组缩放的软值，其表示在第一组子载波上由接收的OFDM信号传送的信息，其中该缩放的软值集合中的每个缩放的软值对应于第一组子载波中的相应的一个子载波 ，并且其中应用于每个所述缩放的软值的缩放量基于由所述干扰模型指示的所述相应一个子载波中的相应的干扰电平。 执行从缩放的软值生成检测数据的解码处理。
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公开(公告)号：US20120051464A1
公开(公告)日：2012-03-01
申请号：US12869816
申请日：2010-08-27
CPC分类号： H04L27/2647 , H04L25/03292 , H04L25/03318 , H04L2025/03414
摘要： Decoding a received Orthogonal Frequency Division Multiplex (OFDM) signal that occupies a first set of subcarriers in a radio frequency spectrum includes ascertaining an interference model that represents interference occurring in the first set of subcarriers caused by a transmitted OFDM signal that occupies a second set of subcarriers in the radio frequency spectrum. A set of scaled soft values is produced that represents information conveyed by the received OFDM signal over the first set of subcarriers, wherein each scaled soft value in the set of scaled soft values corresponds to a respective one of the subcarriers in the first set of subcarriers, and wherein a scaling amount applied to each of the scaled soft values is based on a corresponding level of interference in said respective one of the subcarriers as indicated by the interference model. A decoding process is performed that generates detected data from the scaled soft values.
摘要翻译： 解码在无线电频谱中占用第一组子载波的接收的正交频分多路复用（OFDM）信号包括确定干扰模型，其表示由发送的OFDM信号引起的第一组子载波中所发生的干扰，所述OFDM信号占用第二组 无线电频谱中的子载波。 产生一组缩放的软值，其表示在第一组子载波上由接收的OFDM信号传送的信息，其中该缩放的软值集合中的每个缩放的软值对应于第一组子载波中的相应的一个子载波 ，并且其中应用于每个所述缩放的软值的缩放量基于由所述干扰模型指示的所述相应一个子载波中的相应的干扰电平。 执行从缩放的软值生成检测数据的解码处理。
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3.发明授权Methods and apparatus for improved receiver performance in half-duplex wireless terminals 有权用于提高半双工无线终端接收机性能的方法和装置公开(公告)号：US07953028B2
公开(公告)日：2011-05-31
申请号：US12099945
申请日：2008-04-09
申请人： Bengt Lindoff , Sven Mattisson
发明人： Bengt Lindoff , Sven Mattisson
IPC分类号： H04B7/00
摘要： A half-duplex mobile terminal having first and second receiver branches connected, during a receive mode, to respective antennas, is disclosed. One of the antennas is selectively connected to the first receiver branch or to a transmitter circuit. The first antenna is connected to the first receiver branch during a first interval, during which interval data is detected using outputs from both the first and second receiver branches. The first antenna is disconnected from the first receiver branch at the end of the first interval, and, during a second interval immediately following the first interval, data is detected using the output of the second receiver branch. A portion of the incoming transmission that arrives during the transition between the receive mode and transmit mode in a half-duplex transceiver is thus received and detected, improving performance of the half-duplex transceiver.
摘要翻译： 公开了一种在接收模式期间将第一和第二接收机分支连接到相应天线的半双工移动终端。 其中一个天线选择性地连接到第一接收机分支或发射机电路。 第一天线在第一间隔期间连接到第一接收器分支，在该间隔期间，使用来自第一和第二接收器分支的输出检测间隔数据。 在第一间隔结束时，第一天线与第一接收器分支断开，并且在第一间隔之后的第二间隔期间，使用第二接收器分支的输出来检测数据。 因此，在半双工收发器中的接收模式和发送模式之间的转换期间到达的输入传输的一部分被接收和检测，从而提高了半双工收发器的性能。
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公开(公告)号：US08155032B2
公开(公告)日：2012-04-10
申请号：US12255054
申请日：2008-10-21
申请人： Bengt Lindoff , William O. Camp , Sven Mattisson
发明人： Bengt Lindoff , William O. Camp , Sven Mattisson
IPC分类号： H04L5/16
CPC分类号： H04W72/082 , H04W72/048 , H04W84/08
摘要： Adaptation is introduced into allocation of uplink and downlink subframes in wireless communication systems that support full-duplex and half-duplex mobile terminals, thus reducing interference between mobile terminals. In an exemplary method for allocating uplink and downlink timeslots in a wireless communication system supporting full-duplex and half-duplex mobile terminals, a base station determines that a mobile terminal is capable of only half-duplex operation and allocates one or more uplink subframes and one or more downlink subframes to the first mobile terminal, for each of a plurality of frames, so that none of the allocated uplink subframes overlaps in time with an allocated downlink subframe. The allocation of uplink subframes and downlink subframes is varied between consecutive ones in at least a first series of frames according to a pre-determined pattern. In some embodiments, the method further includes transmitting an allocation message to the first mobile terminal, designating the pre-determined pattern.
摘要翻译： 在支持全双工和半双工移动终端的无线通信系统中，将适配引入到上行链路和下行链路子帧的分配中，从而减少移动终端之间的干扰。 在支持全双工和半双工移动终端的无线通信系统中分配上行链路和下行链路时隙的示例性方法中，基站确定移动终端仅能够进行半双工操作，并且分配一个或多个上行链路子帧， 一个或多个下行链路子帧到第一移动终端，用于多个帧中的每一个，使得所分配的上行链路子帧中的任何一个都不会与分配的下行链路子帧在时间上重叠。 上行链路子帧和下行链路子帧的分配根据预定模式在至少第一系列帧中在连续帧的分配之间变化。 在一些实施例中，该方法还包括向第一移动终端发送分配消息，指定预定模式。
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公开(公告)号：US20110136455A1
公开(公告)日：2011-06-09
申请号：US13001758
申请日：2009-06-15
申请人： Lars Sundstrom , Bengt Lindoff , Sven Mattisson , Filip Oredsson , Tony Petersson , Imad ud Din
发明人： Lars Sundstrom , Bengt Lindoff , Sven Mattisson , Filip Oredsson , Tony Petersson , Imad ud Din
IPC分类号： H04B1/26
摘要： A processing device (40) for processing an analog complex input signal generated by downconversion of an aggregated-spectrum radio-frequency signal in a radio-receiver (10), wherein the complex input signal comprises a plurality of sub bands (S1-S4) scattered across a total frequency band (4) of the complex input signal. The processing device (40) comprises a plurality of processing paths (P1-PN). wherein each processing path (P1-PN) is adapted to process an associated sub band (S1-S4). Each processing path comprises a complex mixer (CM1-CMN) adapted to frequency translate the complex input signal, and an analog channel-selection filter (CSF1-CSFN) arranged to filter an output signal of the complex mixer (CM1-CMN) and pass the frequency translated associated sub band (S1-S4). A control unit (60) is adapted to receive control data indicating frequency locations of the sub bands (S1-S4) and, for each processing path (P1-PN). control the local oscillator signal of the complex mixer (CM1-CMN) of the processing path (P1-PN) based on the frequency location of the associated sub band (S1-S4) and the passband of the channel-selection filter (CSF1-CSFN) of the processing path (P1-PN), such that the frequency-translated associated sub band (S1-S4) appears within a passband of the channel-selection filter (CSF1-CSFN) of the processing path (P1-PN). The distortion monitored in the unused paths may be used to improve the performance of the used paths.
摘要翻译： 一种处理装置（40），用于处理通过在无线电接收机（10）中对聚合频谱射频信号进行下变频而产生的模拟复合输入信号，其中所述复合输入信号包括多个子带（S1-S4） 分散在复合输入信号的总频带（4）上。 处理装置（40）包括多个处理路径（P1-PN），其中每个处理路径（P1-PN）适于处理相关子带（S1-S4）。 每个处理路径包括适于对复数输入信号进行频率转换的复合混频器（CM1-CMN），和布置成对复合混频器（CM1-CMN）的输出信号进行滤波并通过的模拟通道选择滤波器（CSF1-CSFN） 频率相关子带（S1-S4）。 控制单元（60）适于接收指示子频带的频率位置的控制数据（S1-S4），并且对于每个处理路径（P1-PN），控制复合混频器（CM1-CMN）的本地振荡器信号， 基于相关子带（S1-S4）的频率位置和处理路径（P1-PN）的信道选择滤波器（CSF1-CSFN）的通带的处理路径（P1-PN），使得 经频率转换的相关子带（S1-S4）出现在处理路径（P1-PN）的信道选择滤波器（CSF1-CSFN）的通带内。 在未使用的路径中监视的失真可用于改善所使用路径的性能。
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公开(公告)号：US20090135748A1
公开(公告)日：2009-05-28
申请号：US12255054
申请日：2008-10-21
申请人： Bengt Lindoff , Williams O. Camp , Sven Mattisson
发明人： Bengt Lindoff , Williams O. Camp , Sven Mattisson
IPC分类号： H04L5/16
CPC分类号： H04W72/082 , H04W72/048 , H04W84/08
摘要： Adaptation is introduced into allocation of uplink and downlink subframes in wireless communication systems that support full-duplex and half-duplex mobile terminals, thus reducing interference between mobile terminals. In an exemplary method for allocating uplink and downlink timeslots in a wireless communication system supporting full-duplex and half-duplex mobile terminals, a base station determines that a mobile terminal is capable of only half-duplex operation and allocates one or more uplink subframes and one or more downlink subframes to the first mobile terminal, for each of a plurality of frames, so that none of the allocated uplink subframes overlaps in time with an allocated downlink subframe. The allocation of uplink subframes and downlink subframes is varied between consecutive ones in at least a first series of frames according to a pre-determined pattern. In some embodiments, the method further includes transmitting an allocation message to the first mobile terminal, designating the pre-determined pattern.
摘要翻译： 在支持全双工和半双工移动终端的无线通信系统中将适配引入到上行链路和下行链路子帧的分配中，从而减少移动终端之间的干扰。 在支持全双工和半双工移动终端的无线通信系统中分配上行链路和下行链路时隙的示例性方法中，基站确定移动终端仅能够进行半双工操作，并且分配一个或多个上行链路子帧， 一个或多个下行链路子帧到第一移动终端，用于多个帧中的每一个，使得所分配的上行链路子帧中的任何一个都不会与分配的下行链路子帧在时间上重叠。 上行链路子帧和下行链路子帧的分配根据预定模式在至少第一系列帧中在连续帧的分配之间变化。 在一些实施例中，该方法还包括向第一移动终端发送分配消息，指定预定模式。
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公开(公告)号：US08509725B2
公开(公告)日：2013-08-13
申请号：US13001758
申请日：2009-06-15
申请人： Lars Sundström , Bengt Lindoff , Sven Mattisson , Filip Oredsson , Tony Petersson , Imad ud Din
发明人： Lars Sundström , Bengt Lindoff , Sven Mattisson , Filip Oredsson , Tony Petersson , Imad ud Din
IPC分类号： H04B1/26
摘要： A processing device (40) for processing an analog complex input signal generated by downconversion of an aggregated-spectrum radio-frequency signal in a radio-receiver (10), wherein the complex input signal comprises a plurality of sub bands (S1-S4) scattered across a total frequency band (4) of the complex input signal. The processing device (40) comprises a plurality of processing paths (P1-PN). wherein each processing path (P1-PN) is adapted to process an associated sub band (S1-S4). Each processing path comprises a complex mixer (CM1-CMN) adapted to frequency translate the complex input signal, and an analog channel-selection filter (CSF1-CSFN) arranged to filter an output signal of the complex mixer (CM1-CMN) and pass the frequency translated associated sub band (S1-S4). A control unit (60) is adapted to receive control data indicating frequency locations of the sub bands (S1-S4) and, for each processing path (P1-PN). control the local oscillator signal of the complex mixer (CM1-CMN) of the processing path (P1-PN) based on the frequency location of the associated sub band (S1-S4) and the passband of the channel-selection filter (CSF1-CSFN) of the processing path (P1-PN), such that the frequency-translated associated sub band (S1-S4) appears within a passband of the channel-selection filter (CSF1-CSFN) of the processing path (P1-PN). The distortion monitored in the unused paths may be used to improve the performance of the used paths.
摘要翻译： 一种处理装置（40），用于处理通过在无线电接收机（10）中对聚合频谱射频信号进行下变频而产生的模拟复合输入信号，其中所述复合输入信号包括多个子带（S1-S4） 分散在复合输入信号的总频带（4）上。 处理装置（40）包括多个处理路径（P1-PN），其中每个处理路径（P1-PN）适于处理相关子带（S1-S4）。 每个处理路径包括适于对复数输入信号进行频率转换的复合混频器（CM1-CMN），和布置成对复合混频器（CM1-CMN）的输出信号进行滤波并通过的模拟通道选择滤波器（CSF1-CSFN） 频率相关子带（S1-S4）。 控制单元（60）适于接收指示子频带的频率位置的控制数据（S1-S4），并且对于每个处理路径（P1-PN），控制复合混频器（CM1-CMN）的本地振荡器信号， 基于相关子带（S1-S4）的频率位置和处理路径（P1-PN）的信道选择滤波器（CSF1-CSFN）的通带的处理路径（P1-PN），使得 经频率转换的相关子带（S1-S4）出现在处理路径（P1-PN）的信道选择滤波器（CSF1-CSFN）的通带内。 在未使用的路径中监视的失真可用于改善所使用路径的性能。
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8.发明申请Methods and Apparatus for Improved Receiver Performance in Half-Duplex Wireless Terminals 有权在半双工无线终端中提高接收机性能的方法和装置公开(公告)号：US20090180402A1
公开(公告)日：2009-07-16
申请号：US12099945
申请日：2008-04-09
申请人： Bengt Lindoff , Sven Mattisson
发明人： Bengt Lindoff , Sven Mattisson
IPC分类号： H04B7/00
摘要： A half-duplex mobile terminal having first and second receiver branches connected, during a receive mode, to respective antennas, is disclosed. One of the antennas is selectively connected to the first receiver branch or to a transmitter circuit. The first antenna is connected to the first receiver branch during a first interval, during which interval data is detected using outputs from both the first and second receiver branches. The first antenna is disconnected from the first receiver branch at the end of the first interval, and, during a second interval immediately following the first interval, data is detected using the output of the second receiver branch. A portion of the incoming transmission that arrives during the transition between the receive mode and transmit mode in a half-duplex transceiver is thus received and detected, improving performance of the half-duplex transceiver.
摘要翻译： 公开了一种在接收模式期间将第一和第二接收机分支连接到相应天线的半双工移动终端。 其中一个天线选择性地连接到第一接收机分支或发射机电路。 第一天线在第一间隔期间连接到第一接收器分支，在该间隔期间，使用来自第一和第二接收器分支的输出检测间隔数据。 在第一间隔结束时，第一天线与第一接收器分支断开，并且在第一间隔之后的第二间隔期间，使用第二接收器分支的输出来检测数据。 因此，在半双工收发器中的接收模式和发送模式之间的转换期间到达的输入传输的一部分被接收和检测，从而提高了半双工收发器的性能。
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公开(公告)号：US09825590B2
公开(公告)日：2017-11-21
申请号：US13503168
申请日：2009-10-23
CPC分类号： H03D1/04 , H03D7/12 , H03D7/1458 , H03D7/1466 , H03D7/165 , H03D2200/0088
摘要： The present disclosure generally relates to the field of receiver structures in radio communication systems and more specifically to passive mixers in the receiver structure and to a technique for converting a first signal having a first frequency into a second signal having a second frequency by using a third signal having a third frequency. A passive mixer for converting a first signal having a first frequency into a second signal having a second frequency by using a third signal having a third frequency comprises a cancellation component 220 for generating a first cancellation signal for cancelling second order intermodulation components by superimposing the first signal weighted by a cancellation value on the third signal; and a mixing component 231 having a first terminal 232 for receiving the first signal, a second terminal 234 for outputting the second signal, and a third terminal 236 for receiving the first cancellation signal, wherein the mixing component 231 is adapted to provide the second signal as output at the second terminal 234 by mixing the first signal provided as input at the first terminal 232 and the first cancellation signal provided as input at the third terminal 236.
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公开(公告)号：US08976692B2
公开(公告)日：2015-03-10
申请号：US13522662
申请日：2011-01-20
申请人： Jonas Persson , Sven Mattisson
发明人： Jonas Persson , Sven Mattisson
CPC分类号： H04B1/0475 , H04B1/302 , H04L25/061 , H04L27/2647 , H04L27/364 , H04L2027/0016
摘要： A combination of a phase shifter, a measurement receiver, and an offset estimator enable the d.c. offset in the transmit path of a quadrature transmitter to be distinguished from the d.c. offset in the measurement receiver. The measurement receiver performs a first measurement on the transmit path output with a “normal” phase shift of 0 degrees and 90 degrees for in-phase (I) and quadrature (Q) components, and a second measurement with a “special” phase shift for the I and Q components. In one embodiment, the “special” phase shift for the I and Q components is 180 degrees and 270 degrees, respectively.
摘要翻译： 移相器，测量接收器和偏移估计器的组合使得直流 在正交发射机的发射路径中的偏移量与d.c.进行区分。 在测量接收器中偏移。 测量接收机对于同相（I）和正交（Q）分量以0度和90度的“正常”相移对发射路径输出执行第一测量，并且具有“特殊”相移的第二测量 用于I和Q组件。 在一个实施例中，I和Q分量的“特殊”相移分别为180度和270度。
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