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21.发明申请公开(公告)号：US20050254589A1
公开(公告)日：2005-11-17
申请号：US11128191
申请日：2005-05-13
CPC分类号： H04L25/0234 , H04L25/0204
摘要： A channel estimation device is provided to achieve high-precision channel estimation in a MIMO or multicarrier wireless receiver. This channel estimation device is used in the wireless receiver that receives pilot signals through reception antennas. The pilot signals are modulated by a multicarrier method and are transmitted from transmission antennas. The pilot signals are orthogonal to one another. The channel estimation device includes: an estimation unit that determines a channel estimate value for each unit time slot and each unit sub carrier; and an averaging unit that averages the channel estimate values over time slots including a target time slot and sub carriers including a target sub carrier, thereby determining an average channel estimate value.
摘要翻译： 提供信道估计装置以在MIMO或多载波无线接收机中实现高精度信道估计。 该信道估计装置用于通过接收天线接收导频信号的无线接收机。 导频信号由多载波方式调制，并从发射天线发射。 导频信号彼此正交。 信道估计装置包括：估计单元，其确定每个单位时隙的信道估计值和每个单位子载波; 以及平均单元，其对包括目标时隙的时隙和包括目标子载波的子载波的时隙进行平均，从而确定平均信道估计值。
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22.发明授权Noise power estimation apparatus, noise power estimation method and signal detection apparatus 有权噪声功率估计装置，噪声功率估计方法和信号检测装置公开(公告)号：US08144822B2
公开(公告)日：2012-03-27
申请号：US12117384
申请日：2008-05-08
IPC分类号： H03D1/04
CPC分类号： H04B1/10 , H04B7/0854 , H04B17/345 , H04B2201/70701 , H04W52/16 , H04W52/325
摘要： A noise power estimation apparatus is disclosed. The noise power estimation apparatus includes: a part for calculating correlation between a received signal and a pilot signal so as to obtain a received power of the pilot signal for each path; a part for removing a multipath interference component from the received power of the pilot signal by using a predetermined power ratio between the pilot signal and a data signal so as to obtain a corrected received power of the pilot signal; a part for estimating an estimated total power of the pilot signal and the data signal included in the received signal based on the corrected received power and the predetermined power ratio; and a part for subtracting the estimated total power from a total power of the received signal so as to obtain a noise power.
摘要翻译： 公开了一种噪声功率估计装置。 噪声功率估计装置包括：用于计算接收信号和导频信号之间的相关性的部分，以获得每个路径的导频信号的接收功率; 通过使用导频信号和数据信号之间的预定功率比，从导频信号的接收功率中去除多路径干扰分量的部分，以获得导频信号的校正接收功率; 用于基于校正的接收功率和预定功率比来估计导频信号的估计总功率和包括在接收信号中的数据信号的部分; 以及用于从接收信号的总功率中减去估计的总功率以获得噪声功率的部分。
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公开(公告)号：US07684362B2
公开(公告)日：2010-03-23
申请号：US11346319
申请日：2006-02-03
IPC分类号： H04B7/02
CPC分类号： H04L1/0068 , H04L1/0003 , H04L1/0009 , H04L1/0041 , H04L1/0071 , H04L1/08 , H04L1/1819 , H04L1/1845
摘要： A MIMO multiple transmission device, comprising a packet data block generator (111) for generating a packet data block as a resent unit for hybrid ARQ; a CRC adder (112) for adding an error detection code; a channel encoder (113) for performing channel encoding, the packet data block generator, the CRC adder and the channel encoder being coupled in series in one or more data streams; a parallel-to-serial converter (114) for converting output of the channel encoder to serial form; an interleaver between transmission streams (115) for performing interleaving between transmission streams on outputs from the parallel-to-serial converter; a serial-to-parallel converter (116) for converting outputs from the interleaver between transmission streams to parallel form; a coding rate changer (117) for changing a coding rate; and a data modulator (119) for modulating data, the coding rate changer and the data modulator being connected in series in plural data streams divided by the serial-to-parallel converter.
摘要翻译： 一种MIMO多传输设备，包括用于生成分组数据块作为混合ARQ的重发单元的分组数据块发生器（111） 用于添加错误检测码的CRC加法器（112） 用于执行信道编码的信道编码器（113），分组数据块发生器，CRC加法器和信道编码器在一个或多个数据流中串联耦合; 用于将信道编码器的输出转换为串行形式的并行到串行转换器（114）; 用于在来自并行转换器的输出上执行传输流之间的交织的传输流（115）之间的交织器; 串行到并行转换器（116），用于将传输流之间的交织器的输出转换成并行形式; 用于改变编码率的编码率改变器（117） 以及用于调制数据的数据调制器（119），编码率改变器和数据调制器串联连接在由串并转换器分割的多个数据流中。
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24.发明申请NOISE POWER ESTIMATION APPARATUS, NOISE POWER ESTIMATION METHOD AND SIGNAL DETECTION APPARATUS 有权噪声功率估计装置，噪声功率估计方法和信号检测装置公开(公告)号：US20080253432A1
公开(公告)日：2008-10-16
申请号：US12117384
申请日：2008-05-08
IPC分类号： H04B1/707
CPC分类号： H04B1/10 , H04B7/0854 , H04B17/345 , H04B2201/70701 , H04W52/16 , H04W52/325
摘要： A noise power estimation apparatus is disclosed. The noise power estimation apparatus includes: a part for calculating correlation between a received signal and a pilot signal so as to obtain a received power of the pilot signal for each path; a part for removing a multipath interference component from the received power of the pilot signal by using a predetermined power ratio between the pilot signal and a data signal so as to obtain a corrected received power of the pilot signal; a part for estimating an estimated total power of the pilot signal and the data signal included in the received signal based on the corrected received power and the predetermined power ratio; and a part for subtracting the estimated total power from a total power of the received signal so as to obtain a noise power.
摘要翻译： 公开了一种噪声功率估计装置。 噪声功率估计装置包括：用于计算接收信号和导频信号之间的相关性的部分，以获得每个路径的导频信号的接收功率; 通过使用导频信号和数据信号之间的预定功率比，从导频信号的接收功率中去除多路径干扰分量的部分，以获得导频信号的校正接收功率; 用于基于校正的接收功率和预定功率比来估计导频信号的估计总功率和包括在接收信号中的数据信号的部分; 以及用于从接收信号的总功率中减去估计的总功率以获得噪声功率的部分。
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公开(公告)号：US07864897B2
公开(公告)日：2011-01-04
申请号：US11909607
申请日：2006-03-20
CPC分类号： H04B7/0413 , H04L25/0204 , H04L25/0228 , H04L25/0246 , H04L25/03191 , H04L25/03242 , H04L2025/03426
摘要： A disclosed receiver in a MIMO multiplexing communication system, in which plural signals are simultaneously transmitted from plural transmitting antenna branches using the same frequency, and the transmitted signals are retrieved by receiving signals at plural receiving antennas, separating the received signals and searching for proper symbol metrics for each branch, comprises a QR decomposer for QR decomposing the received signals to orthogonalize the transmitted signals; a symbol replica candidate ranking unit for subtracting surviving symbol replica candidates from the QR decomposed received signals to get remaining received signals and rank the remaining signals in the increasing order of expected branch metrics of the remaining received signals; a symbol replica candidate selector for selecting symbol replica candidates in the ranked order; a branch metric calculator for calculating the branch metrics of the selected symbol replica candidates; and a threshold comparator for comparing the calculated branch metrics with a predetermined threshold; wherein if a calculated branch metric is larger than the predetermined threshold, the branch metric and successive branch metrics are deleted without further searching.
摘要翻译： 在MIMO复用通信系统中公开的接收机，其中使用相同频率从多个发送天线分支同时发送多个信号，并且通过在多个接收天线处接收信号来检索所发送的信号，分离接收的信号并搜索适当的符号 每个分支的度量包括QR分解器，用于QR分解接收的信号以使发送的信号正交化; 符号复制候选排序单元，用于从所述QR分解的接收信号中减去剩余码元复制候选，以获得剩余的接收信号，并以剩余接收信号的预期分支度量的递增顺序对剩余信号进行排序; 用于以排序顺序选择符号复本候选者的符号复制候选选择器; 分支度量计算器，用于计算所选择的符号复本候选的分支度量; 以及阈值比较器，用于将所计算的分支度量与预定阈值进行比较; 其中如果所计算的分支度量大于所述预定阈值，则所述分支度量和连续分支度量被删除而不进一步搜索。
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26.发明授权公开(公告)号：US07583739B2
公开(公告)日：2009-09-01
申请号：US11128191
申请日：2005-05-13
IPC分类号： H04K1/10
CPC分类号： H04L25/0234 , H04L25/0204
摘要： A channel estimation device is provided to achieve high-precision channel estimation in a MIMO or multicarrier wireless receiver. This channel estimation device is used in the wireless receiver that receives pilot signals through reception antennas. The pilot signals are modulated by a multicarrier method and are transmitted from transmission antennas. The pilot signals are orthogonal to one another. The channel estimation device includes: an estimation unit that determines a channel estimate value for each unit time slot and each unit sub carrier; and an averaging unit that averages the channel estimate values over time slots including a target time slot and sub carriers including a target sub carrier, thereby determining an average channel estimate value.
摘要翻译： 提供信道估计装置以在MIMO或多载波无线接收机中实现高精度信道估计。 该信道估计装置用于通过接收天线接收导频信号的无线接收机。 导频信号由多载波方式调制，并从发射天线发射。 导频信号彼此正交。 信道估计装置包括：估计单元，其确定每个单位时隙的信道估计值和每个单位子载波; 以及平均单元，其对包括目标时隙的时隙和包括目标子载波的子载波的时隙进行平均，从而确定平均信道估计值。
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公开(公告)号：US20060209813A1
公开(公告)日：2006-09-21
申请号：US11346319
申请日：2006-02-03
IPC分类号： H04Q11/00
CPC分类号： H04L1/0068 , H04L1/0003 , H04L1/0009 , H04L1/0041 , H04L1/0071 , H04L1/08 , H04L1/1819 , H04L1/1845
摘要： A MIMO multiple transmission device, comprising a packet data block generator (111) for generating a packet data block as a resent unit for hybrid ARQ; a CRC adder (112) for adding an error detection code; a channel encoder (113) for performing channel encoding, the packet data block generator, the CRC adder and the channel encoder being coupled in series in one or more data streams; a parallel-to-serial converter (114) for converting output of the channel encoder to serial form; an interleaver between transmission streams (115) for performing interleaving between transmission streams on outputs from the parallel-to-serial converter; a serial-to-parallel converter (116) for converting outputs from the interleaver between transmission streams to parallel form; a coding rate changer (117) for changing a coding rate; and a data modulator (119) for modulating data, the coding rate changer and the data modulator being connected in series in plural data streams divided by the serial-to-parallel converter.
摘要翻译： 一种MIMO多传输设备，包括用于生成分组数据块作为混合ARQ的重发单元的分组数据块发生器（111） 用于添加错误检测码的CRC加法器（112） 用于执行信道编码的信道编码器（113），分组数据块发生器，CRC加法器和信道编码器在一个或多个数据流中串联耦合; 用于将信道编码器的输出转换为串行形式的并行到串行转换器（114）; 用于在来自并行转换器的输出上执行传输流之间的交织的传输流（115）之间的交织器; 串行到并行转换器（116），用于将传输流之间的交织器的输出转换成并行形式; 用于改变编码率的编码率改变器（117） 以及用于调制数据的数据调制器（119），编码率改变器和数据调制器串联连接在由串并转换器分割的多个数据流中。
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公开(公告)号：US20050259771A1
公开(公告)日：2005-11-24
申请号：US11128193
申请日：2005-05-13
CPC分类号： H04L25/03331 , H04B7/04 , H04L25/0204 , H04L25/0228 , H04L25/0246 , H04L2025/0342
摘要： A signal separation device is disclosed that is able to reduce a number of calculations required when separating a received signal transmitted from transmission devices into the individual transmission signal. The signal separation device includes a signal point derivation unit that multiplies the received signal with respective elements of a unitary matrix, and derives at least one received-signal signal point on a signal constellation diagram; a definition unit that defines plural sections on the signal constellation diagram, each of the sections including a predetermined number of signal points; a detection unit that detects a received-signal section from the sections, the received-signal section including the received-signal signal point; a selection unit that selects signal points in the received-signal section as candidates of the received-signal signal point; and a determination unit that determines the transmission signals based on the selected signal points.
摘要翻译： 公开了一种信号分离装置，其能够减少将从发送装置发送的接收信号分离成各个发送信号所需的计算次数。 信号分离装置包括：信号点导出单元，用于将接收到的信号与单一矩阵的各个元素相乘，并在信号星座图上导出至少一个接收信号信号点; 定义单元，其在信号星座图上定义多个部分，每个部分包括预定数量的信号点; 检测单元，其从所述部分检测接收信号部分，所述接收信号部分包括所述接收信号信号点; 选择单元，其选择接收信号部分中的信号点作为接收信号信号点的候选; 以及确定单元，其基于所选择的信号点来确定发送信号。
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公开(公告)号：US20050255819A1
公开(公告)日：2005-11-17
申请号：US11121973
申请日：2005-05-05
CPC分类号： H04B1/7113 , H04B1/7107 , H04B1/7117
摘要： A path searcher (304) used in a receiver includes a power delay profile generating unit (402) configured to generate a power delay profile based on a signal received by the receiver, a sidelobe generating unit (406) configured to identify a sidelobe component of a path contained in the power delay profile based on a response characteristic of a band-limiting filter of the receiver, a sidelobe removing unit (407) configured to remove the sidelobe component from the power delay profile to produce a corrected power delay profile, and a path timing detection unit (408) configured to detect a path timing based on the corrected power delay profile.
摘要翻译： 在接收机中使用的路径搜索器（304）包括功率延迟分布生成单元（402），其被配置为基于由接收机接收的信号来产生功率延迟分布;旁瓣生成单元（406），被配置为识别旁路分量 基于接收机的带限滤波器的响应特性的功率延迟分布中包含的路径，配置成从功率延迟分布中去除旁瓣分量以产生校正的功率延迟分布的旁瓣去除单元（407），以及 路径定时检测单元（408），被配置为基于所述校正的功率延迟分布来检测路径定时。
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公开(公告)号：US07844003B2
公开(公告)日：2010-11-30
申请号：US11577599
申请日：2005-09-05
CPC分类号： H04B7/0413 , H04L25/03006 , H04L25/067 , H04L2025/03426 , H04L2025/03528
摘要： A signal detection apparatus improving signal detection accuracy in a receiver for communications system complying with the MIMO scheme. The signal detection apparatus detects transmission signals sent from transmission antennas based on received signals received by receiving antennas. The apparatus includes: a first determination mechanism for determining symbol candidates of the transmission signals in sequence based on the QRM-MLD method using the received signals arranged in first order; a second determination mechanism for determining symbol candidates of the transmission signals in sequence based on the QRM-MLD method using the received signals arranged in second order that is different from the first order; and an output mechanism for outputting symbol candidates and likelihood of the transmission signals based on determination results of at least the first and the second determination mechanisms.
摘要翻译： 一种提高符合MIMO方案的通信系统的接收机中的信号检测精度的信号检测装置。 信号检测装置基于由接收天线接收到的接收信号来检测从发送天线发送的发送信号。 该装置包括：第一确定机构，用于基于使用以一级排列的接收信号的QRM-MLD方法来顺序地确定传输信号的符号候选; 基于使用与第一次不同的二次排列的接收信号的QRM-MLD方法来顺序地确定发送信号的符号候选的第二确定机构; 以及输出机构，用于基于至少第一和第二确定机构的确定结果输出符号候选和发送信号的可能性。
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