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1. 发明申请

WO2007015804A3 APPROXIMATE CHOLESKY DECOMPOSITION BASED BLOCK LINEAR EQUALIZER 审中-公开
标题翻译：基于块状分解的块状线性均衡器
公开(公告)号：WO2007015804A3
公开(公告)日：2007-05-18
申请号：PCT/US2006027668
申请日：2006-07-17
申请人： INTERDIGITAL TECH CORP , DIFAZIO ROBERT A , PAN JUNG-LIN , BELURI MIHAELA , LI BIN
发明人： DIFAZIO ROBERT A , PAN JUNG-LIN , BELURI MIHAELA , LI BIN
IPC分类号： H04B7/10
CPC分类号： H04L25/03012 , H04L25/0206 , H04L2025/03605
摘要： A block linear equalizer (BLE) using an approximate Cholesky decomposition is disclosed. The BLE includes channel estimators, a channel monitor unit, a noise power estimator, a parameter selection unit and an approximate Cholesky processor. The channel estimator generates a channel estimate vector from received samples. The channel monitor unit generates a first channel monitor signal for a truncated channel estimate vector and a second channel monitor signal. The noise power estimator estimates a noise power of the received samples. The parameter selection unit selects parameters for approximate Cholesky decomposition based on the first and second channel monitor signals. The approximate Cholesky processor performs block linear equalization on the received samples based on approximate Cholesky decomposition.
摘要翻译：公开了使用近似Cholesky分解的块线性均衡器（BLE）。 BLE包括信道估计器，信道监测单元，噪声功率估计器，参数选择单元和近似的Cholesky处理器。信道估计器从接收样本生成信道估计向量。信道监视单元产生用于截断的信道估计向量和第二信道监视信号的第一信道监视信号。噪声功率估计器估计接收样本的噪声功率。参数选择单元基于第一和第二通道监视信号选择近似Cholesky分解的参数。大约Cholesky处理器基于近似Cholesky分解对接收到的样本执行块线性均衡。

2. 发明申请

WO2006052596A3 ADAPTIVE EQUALIZER WITH A DUAL-MODE ACTIVE TAPS MASK GENERATOR AND A PILOT REFERENCE SIGNAL AMPLITUDE CONTROL UNIT 审中-公开
标题翻译：具有双模主动式屏蔽发生器和引导参考信号幅度控制单元的自适应均衡器
公开(公告)号：WO2006052596A3
公开(公告)日：2006-12-14
申请号：PCT/US2005039635
申请日：2005-11-02
申请人： INTERDIGITAL TECH CORP , PIETRASKI PHILIP J , BELURI MIHAELA , DEMIR ALPASLAN , PAN JUNG-LIN , STERNBERG GREGORY S , YANG RUI , LI BIN
发明人： PIETRASKI PHILIP J , BELURI MIHAELA , DEMIR ALPASLAN , PAN JUNG-LIN , STERNBERG GREGORY S , YANG RUI , LI BIN
IPC分类号： H03H7/30 , G06F17/10 , H03K5/159 , H04B1/10 , H04B3/14
CPC分类号： H04L25/03038 , H04B1/7097 , H04L27/0014 , H04L2025/03509 , H04L2025/03547 , H04L2025/03585 , H04L2025/03611 , H04L2025/03617 , H04L2025/03687 , H04L2027/003 , H04L2027/0038 , H04L2027/0065
摘要： An adaptive equalizer including an equalizer filter and a tap coefficients generator used to process a sample data stream derived from a plurality of received signals is disclosed. The tap coefficients generator includes an equalizer tap update unit, a vector norm square estimator, an active taps mask generator, a switch and a pilot amplitude reference unit used to minimize the dynamic range of the equalizer filter. A dynamic mask vector is used to mask active taps generated by the equalizer tap update unit when an unmasked signal output by the equalizer filter is selected by the switch to generate an error signal fed to the equalizer tap update unit. A fixed mask vector is used to mask active taps generated by the equalizer tap update unit when a masked signal output by the equalizer filter is used to generate the error signal.
摘要翻译：公开了一种自适应均衡器，包括均衡器滤波器和用于处理从多个接收信号导出的采样数据流的抽头系数发生器。抽头系数发生器包括均衡器抽头更新单元，矢量范数平方估计器，有源抽头掩码发生器，开关和导频幅度参考单元，用于最小化均衡器滤波器的动态范围。当由均衡器滤波器输出的未掩蔽信号被开关选择以产生馈送到均衡器抽头更新单元的误差信号时，使用动态掩码向量来掩蔽由均衡器抽头更新单元产生的有源抽头。当由均衡器滤波器输出的掩蔽信号被用于生成误差信号时，使用固定掩蔽矢量来掩蔽由均衡器抽头更新单元生成的有效抽头。

3. 发明申请

WO2006088685A3 ADVANCED RECEIVER WITH SLIDING WINDOW BLOCK LINEAR EQUALIZER 审中-公开
标题翻译：具有滑动窗框线性均衡器的先进接收器
公开(公告)号：WO2006088685A3
公开(公告)日：2008-11-13
申请号：PCT/US2006004153
申请日：2006-02-07
申请人： INTERDIGITAL TECH CORP , LI BIN , DIFAZIO ROBERT A , PAN KYLE JUNG-LIN , REZNIK ALEXANDER , KAEWELL JOHN DAVID JR , BECKER PETER EDWARD
发明人： LI BIN , DIFAZIO ROBERT A , PAN KYLE JUNG-LIN , REZNIK ALEXANDER , KAEWELL JOHN DAVID JR , BECKER PETER EDWARD
IPC分类号： H03H7/30 , H04B1/10 , H04L1/00 , H04L25/08
CPC分类号： H04L25/03159 , H04B17/336
摘要： A receiver or an integrated circuit (IC) incorporated therein includes a fast Fourier transform (FFT)-based (or hybrid FFT-based) sliding window block level equalizer (BLE) for generating equalized samples. The BLE includes a noise power estimator, first and second channel estimators, an FFT-based chip level equalizer (CLEQ) and a channel monitor unit. The noise power estimator generates a noise power estimate based on two diverse sample data streams. The channel estimators generate respective channel estimates based on the sample data streams. The channel monitor unit generates a first channel monitor signal including truncated channel estimate vectors based on the channel estimates, and a second channel monitor signal which indicates an approximate rate of change of the truncated channel estimate vectors. The FFT-based CLEQ generates the equalized samples based on the noise power estimate, one-block samples of the first and second sample data streams, the channel estimates and the monitor signals.
摘要翻译：结合在其中的接收器或集成电路（IC）包括用于产生均衡样本的基于快速傅立叶变换（FFT）（或基于混合FFT）的滑动窗口块级均衡器（BLE）。 BLE包括噪声功率估计器，第一和第二信道估计器，基于FFT的码片级均衡器（CLEQ）和信道监视器单元。噪声功率估计器基于两个不同的采样数据流产生噪声功率估计。信道估计器基于样本数据流生成相应的信道估计。信道监视单元基于信道估计产生包括截断的信道估计向量的第一信道监视信号，以及指示截断的信道估计向量的近似变化率的第二信道监视信号。基于FFT的CLEQ基于噪声功率估计，第一和第二采样数据流的一个块采样，信道估计和监视信号来生成均衡的采样。

4. 发明申请

WO2005034404A3 RAKE-BASED CDMA RECEIVERS FOR MULTIPLE RECEIVER ANTENNAS 审中-公开
标题翻译：基于RAKE的CDMA接收机，用于多个接收机天线
公开(公告)号：WO2005034404A3
公开(公告)日：2006-03-16
申请号：PCT/US2004028402
申请日：2004-09-01
申请人： INTERDIGITAL TECH CORP , LI BIN , REZNIK ALEXANDER
发明人： LI BIN , REZNIK ALEXANDER
IPC分类号： H04B15/00 , H04B1/707 , H04B7/08 , H04K1/00 , H04L27/30
CPC分类号： H04B1/712 , H04B7/0854
摘要： A receiver (fig.2) comprises a plurality of antenna elements (210) for receiving a data signal. Each antenna element (210) has a plurality of Rake fingers (200). Each Rake finger (200) processes a received multipath component of the received data signal of its antenna element (210) by applying a complex weight gain to that received multipath component. A complex weight gain generator (205) determines the complex weight gain for each Rake finger (200) for each antenna element (210) using an input from all the Rake fingers (200). A summer (225) combines an output of each Rake finger (200) to produce an estimate of the data signal.
摘要翻译：接收机（图2）包括用于接收数据信号的多个天线元件（210）。每个天线元件（210）具有多个耙指（200）。每个耙指（200）通过对所接收的多路径分量应用复加权增益来处理其天线元件（210）的接收数据信号的接收多径分量。复合加权增益发生器（205）使用来自所有耙指（200）的输入来确定每个天线元件（210）的每个耙指（200）的复加权增益。夏季（225）组合每个耙指（200）的输出以产生数据信号的估计。

5. 发明申请

WO2005009057A3 HIGH PERFORMANCE WIRELESS RECEIVER WITH CLUSTER MULTIPATH INTERFERENCE SUPPRESSION CIRCUIT 审中-公开
标题翻译：集群多路干扰抑制电路的高性能无线接收器
公开(公告)号：WO2005009057A3
公开(公告)日：2005-07-21
申请号：PCT/US2004022547
申请日：2004-07-13
申请人： INTERDIGITAL TECH CORP , REZNIK ALEXANDER , LI BIN , YANG RUI , ZEIRA ARIELA
发明人： REZNIK ALEXANDER , LI BIN , YANG RUI , ZEIRA ARIELA
IPC分类号： H04B1/7115 , H04B1/00 , H04L25/03 , H04Q20060101
CPC分类号： H04B1/7113 , H04B1/7115 , H04L25/03038 , H04L25/03987 , H04L2025/03592
摘要： A receiver which suppresses inter-cluster multipath interference by processing an impulse channel response consisting of two multipath clusters, each cluster having groups of signals with multiple delays. In one embodiment, the receiver includes a single antenna and parallel-connected delay units used to align the groups of signals before being input into respective sliding window equalizers. The outputs of the equalizers are combined at chip level via a combiner which provides a single output. In another embodiment, a Cluster Multipath Interference Suppression (CMIS) circuit is incorporated into the receiver. The CMIS circuit includes a hard decision unit and a plurality of signal regeneration units to generate replicas of the multipath clusters. The replicas are subtracted from the respective outputs of the delay units and the results are input to the respective sliding window equalizers. In another embodiment, multiple antennas are used to receive and process the clusters.
摘要翻译：一种通过处理由两个多路径簇组成的脉冲信道响应来抑制簇间多路径干扰的接收机，每个簇具有多个延迟的信号组。在一个实施例中，接收器包括单个天线和并联连接的延迟单元，用于在输入到相应滑动窗口均衡器之前对齐这些信号组。均衡器的输出通过提供单输出的组合器在芯片级组合。在另一个实施例中，集群多路径干扰抑制（CMIS）电路被结合到接收机中。 CMIS电路包括硬判决单元和多个信号再生单元以生成多路径群集的复制品。从延迟单元的各个输出中减去副本，并将结果输入到各个滑动窗口均衡器。在另一个实施例中，使用多个天线来接收和处理群集。

6. 发明申请

WO2004079927A3 REDUCED COMPLEXITY SLIDING WINDOW BASED EQUALIZER 审中-公开
标题翻译：降低复杂度滑动窗口均衡器
公开(公告)号：WO2004079927A3
公开(公告)日：2005-03-24
申请号：PCT/US2004006162
申请日：2004-03-02
申请人： INTERDIGITAL TECH CORP , YANG RUI , LI BIN , REZNIK ALEXANDER , ZEIRA ARIELA
发明人： YANG RUI , LI BIN , REZNIK ALEXANDER , ZEIRA ARIELA
IPC分类号： H04B1/38 , H04L25/02 , H04L25/03 , H04B1/69
CPC分类号： H04L25/03057 , H04L25/0212 , H04L25/0242 , H04L25/03292 , H04L2025/03605
摘要： A sliding window based data estimation is performed. An error is introduced in the data estimation to the communication modeling the relationship between the transmitted and received signals. To compensate for an error in the estimated data, the data that was estimated in a previous sliding window step (58) or terms that would otherwise be truncated as noise are used. These techniques (50, 52, 54, 56. 58, 60, 62 and 64) allow for data to be truncated prior to further processing reducing the data of the window.
摘要翻译：执行基于滑动窗口的数据估计。在数据估计中引入了错误，以通信建模发送和接收信号之间的关系。为了补偿估计数据中的错误，使用在先前滑动窗口步骤（58）中估计的数据或否则将被截断为噪声的项目。这些技术（50,52,54,58,56,62和64）允许在进一步处理之前对数据进行截断以减少窗口的数据。

7. 发明申请

WO2005029742A3 METHOD FOR ESTIMATING SIGNAL MAGNITUDE, NOISE POWER, AND SIGNAL-TO-NOISE RATIO OF RECEIVED SIGNALS 审中-公开
标题翻译：估计接收信号的信号噪声，噪声功率和信号噪声比的方法
公开(公告)号：WO2005029742A3
公开(公告)日：2007-01-11
申请号：PCT/US2004027394
申请日：2004-08-24
申请人： INTERDIGITAL TECH CORP , LI BIN , STERNBERG GREGORY S , PIETRASKI PHILIP J
发明人： LI BIN , STERNBERG GREGORY S , PIETRASKI PHILIP J
IPC分类号： H03C3/38 , H03C1/00 , H03D1/00 , H03D1/24 , H04J11/00 , H04L1/20 , H04L5/12 , H04L27/00 , H04L27/20 , H04L27/22 , H04L27/36 , H04L27/38
CPC分类号： H04L27/38 , H04L1/20
摘要： An improved system and method for estimating one or more parameters, such as amplitude and signal-to-noise ratio, of a received signal, such as an M-QAM or q-ASK signal, is set forth herein. A first embodiment of the invention estimates the amplitude of an M- QAM signal based upon known or ascertainable phase information regarding a plurality of transmitted symbols. A respective set of received symbols corresponding to the plurality of transmitted symbols is recovered (101). Each of the plurality of received symbols is multiplied by a complex unit vector with a phase that is opposite in sign to the complex transmitted data symbol to generate a set of products. The set of products is summed (105), and the real part of the sum of products is then determined. The absolute values of the known transmitted symbols are summed to generate a total magnitude value. The real part of the sum of products is divided (111) by the sum of transmitted magnitude values to generate an estimate of the amplitude of the M-QAM signal.
摘要翻译：本文阐述了用于估计接收信号（诸如M-QAM或q-ASK信号）的一个或多个参数（诸如振幅和信噪比）的改进的系统和方法。本发明的第一实施例基于关于多个发送符号的已知或可确定的相位信息来估计M-QAM信号的幅度。恢复对应于多个发送符号的相应的一组接收符号（101）。将多个接收到的符号中的每一个乘以具有与符号相反的相位的复数单位向量到复数发送的数据符号，以生成一组乘积。产品集合（105），然后确定产品总数的实部。已知发射符号的绝对值被相加以产生总幅值。产品总和的实部由（111）除以传输的幅值之和，以产生M-QAM信号幅度的估计。

8. 发明申请

WO2006121721A2 METHOD AND APPARATUS FOR ESTIMATING SIGNAL-TO-NOISE RATIO BASED ON DEDICATED PHYSICAL CHANNEL PILOT SYMBOLS 审中-公开
标题翻译：基于专用物理通道引导符号估计信号噪声比的方法和装置
公开(公告)号：WO2006121721A2
公开(公告)日：2006-11-16
申请号：PCT/US2006016935
申请日：2006-05-02
申请人： INTERDIGITAL TECH CORP , LI BIN , YANG RUI , STERNBERG GREGORY S
发明人： LI BIN , YANG RUI , STERNBERG GREGORY S
IPC分类号： H04L27/06
CPC分类号： H04L1/20 , H04B2201/70701
摘要： The present invention is related to a method and apparatus for estimating signal-to-noise ratio (SNR) based on dedicated physical channel (DPCH) pilot symbols in a wireless communication system. A receiver receives a DPCH transmission and a despreader despreads the received DPCH transmission. A selector selects pilot symbols in the despread DPCH transmission. A signal power estimator estimates signal power based on the pilot symbols, and a noise power estimator estimates noise power based on the received DPCH transmission. A SNR estimator estimates an SNR based on the signal power estimation and the noise power estimation. The noise power estimator may calculate the noise power estimation either based only on pilot symbols or based on both pilot symbols and non-pilot symbols. The DPCH transmission may be transmitted using more than one antenna for transmit diversity.
摘要翻译：本发明涉及一种用于在无线通信系统中基于专用物理信道（DPCH）导频符号估计信噪比（SNR）的方法和装置。接收机接收DPCH传输，并且去扩展器对所接收的DPCH传输进行解扩。选择器在解扩DPCH传输中选择导频符号。信号功率估计器基于导频符号估计信号功率，并且噪声功率估计器基于所接收的DPCH传输来估计噪声功率。 SNR估计器基于信号功率估计和噪声功率估计来估计SNR。噪声功率估计器可以仅基于导频符号或基于导频符号和非导频符号来计算噪声功率估计。可以使用多于一个的天线发射DPCH传输用于发射分集。

9. 发明申请

WO2005048031A3 METHOD AND APPARATUS FOR ESTIMATING AND REPORTING THE QUALITY OF A WIRELESS COMMUNICATION CHANNEL 审中-公开
标题翻译：估计和报告无线通信信道质量的方法和装置
公开(公告)号：WO2005048031A3
公开(公告)日：2005-12-22
申请号：PCT/US2004034789
申请日：2004-10-21
申请人： INTERDIGITAL TECH CORP , PIETRASKI PHILIP J , STERNBERG GREGORY S , YANG RUI , LI BIN
发明人： PIETRASKI PHILIP J , STERNBERG GREGORY S , YANG RUI , LI BIN
IPC分类号： H04L1/00 , H04L1/20 , H04L25/02 , H04L5/12
CPC分类号： H04L1/0026 , H04L1/20 , H04L25/0202
摘要： A method and apparatus for estimating and reporting the quality of a wireless communication channel between a wireless transmit/receive unit (WTRU) and a Node-B. A modulated signal is received from the Node-B over the communication channel and a channel estimation is performed on the modulated signal to provide a channel estimate. In one embodiment, the modulated signal is demodulated based on the channel estimate to provide a demodulated signal and a signal-to-interference (SIR) estimate based on the demodulated signal is obtained. The quality of the communication channel is estimated based on at least the SIR estimate. In an alternate embodiment, a SIR estimate based on the channel estimate is obtained. The quality of the communication channel is estimated based on the SIR estimate and additional information including at least one of delay spread, transmit power and WTRU velocity information.
摘要翻译：一种用于估计和报告无线发射/接收单元（WTRU）和节点B之间的无线通信信道的质量的方法和装置。通过通信信道从节点B接收调制信号，并对调制信号执行信道估计以提供信道估计。在一个实施例中，基于信道估计来解调调制信号以提供解调信号，并且获得基于解调信号的信号干扰（SIR）估计。至少基于SIR估计来估计通信信道的质量。在替代实施例中，获得基于信道估计的SIR估计。基于SIR估计和包括延迟扩展，发射功率和WTRU速度信息中的至少一个的附加信息来估计通信信道的质量。

10. 发明申请

WO2005004338A2 REDUCED COMPLEXITY SLIDING WINDOW BASED EQUALIZER 审中-公开
标题翻译：降低复杂度滑动窗口均衡器
公开(公告)号：WO2005004338A2
公开(公告)日：2005-01-13
申请号：PCT/US2004020427
申请日：2004-06-24
申请人： INTERDIGITAL TECH CORP , REZNIK ALEXANDER , YANG RUI , LI BIN , ZEIRA ARIELA
发明人： REZNIK ALEXANDER , YANG RUI , LI BIN , ZEIRA ARIELA
IPC分类号： H03D1/04 , H04B20060101 , H04B1/707 , H04L25/03 , H04B
CPC分类号： H04L25/03305 , H04B1/71055 , H04L25/03331 , H04L25/03993
摘要： The present invention has many aspects. One aspect of the invention is to perform equalization using a sliding window approach. A second aspect reuses information derived for each window for use by a subsequent window. A third aspect utilizes a discrete Fourier transform based approach for the equalization. A fourth aspect relates to handling oversampling of the received signals and channel responses. A fifth aspect relates to handling multiple reception antennas. A sixth embodiment relates to handling both oversampling and multiple reception antennas.
摘要翻译：本发明具有许多方面。本发明的一个方面是使用滑动窗口方法进行均衡。第二个方面重用为每个窗口导出的信息，供后续窗口使用。第三方面利用基于离散傅立叶变换的均衡方法。第四方面涉及处理接收信号和信道响应的过采样。第五方面涉及处理多个接收天线。第六实施例涉及处理过采样和多个接收天线。

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