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1. 发明申请

WO2002052743A3 APPARATUS AND METHODS FOR FINGER DELAY SELECTION IN RAKE RECEIVERS 审中-公开
公开(公告)号：WO2002052743A3
公开(公告)日：2002-07-04
申请号：PCT/US2001/049268
申请日：2001-12-18
申请人： ERICSSON INC , WANG, Yi-Pin, Eric , BOTTOMLEY, Gregory, Edward , URABE, Kenzo
发明人： WANG, Yi-Pin, Eric , BOTTOMLEY, Gregory, Edward , URABE, Kenzo
IPC分类号： H04B1/707
摘要： Methods of recovering information encoded in a spread spectrum signal transmitted according to a spreading sequence in a communications medium are provided in which a spread spectrum signal is received from the communications medium and correlated with a spreading sequence to produce a plurality of time-offset correlations. Some of these time-offset correlations may be designed to cancel out known interfering signals. A subset of the plurality of time-offsets may then be selected, and corresponding traffic correlations may then be combined using a weighted combination to estimate information encoded in the transmitted spread spectrum signal. Receivers for implementing these methods are also provided.

2. 发明申请

WO2003015306A1 METHODS AND APPARATUS FOR SELECTIVE DEMODULATION AND DECODING OF COMMUNICATIONS SIGNALS 审中-公开
标题翻译：用于选择性解调和解码通信信号的方法和装置
公开(公告)号：WO2003015306A1
公开(公告)日：2003-02-20
申请号：PCT/US2002/024705
申请日：2002-08-06
申请人： ERICSSON INC. , DAHLMAN, Erik , WANG, Yi-Pin, Eric , DENT, Paul, Wilkinson , BOTTOMLEY, Gregory, Edward , KHAYRALLAH, Ali, S. , OSTBERG, Christer
发明人： DAHLMAN, Erik , WANG, Yi-Pin, Eric , DENT, Paul, Wilkinson , BOTTOMLEY, Gregory, Edward , KHAYRALLAH, Ali, S. , OSTBERG, Christer
IPC分类号： H04B1/707
CPC分类号： H04B1/7115 , H04B1/7075 , H04B1/709 , H04B1/712 , H04B2201/7071 , H04B2201/709727
摘要： A spread spectrum signal is processed by correlating the spread spectrum signal with a spreading sequence at a first plurality of correlation times to produce a first plurality of time-offset correlations. The first plurality of time-offset correlations is processed to produce a first symbol representation for a symbol. A first quality is determined for the first symbol representation. Responsive to the determined first quality, it is determined whether to further process the first symbol representation or to process a second symbol representation for the symbol generated from the spread spectrum signal. The first quality may be determined, for example, by decoding the first symbol representations to generate a decoding metric or error check indicator, such as a CRC result. The symbol representations may be generated and/or evaluated for quality in a serial fashion or a parallel fashion.
摘要翻译：通过在第一多个相关时间将扩展频谱信号与扩频序列相关来处理扩展频谱信号，以产生第一多个时间偏移相关。处理第一多个时间偏移相关以产生符号的第一符号表示。确定第一个符号表示的第一个质量。响应于确定的第一质量，确定是否进一步处理第一符号表示或处理从扩频信号产生的符号的第二符号表示。可以例如通过对第一符号表示进行解码以产生诸如CRC结果的解码度量或错误检查指示符来确定第一质量。符号表示可以以串行方式或并行方式生成和/或评估质量。

3. 发明申请

WO2003030402A1 COMMUNICATIONS METHODS, APPARATUS AND COMPUTER PROGRAMS PRODUCTS FOR CHANNEL CHARACTERIZATION 审中-公开
标题翻译：通信方法，设备和计算机程序产品的通道特征
公开(公告)号：WO2003030402A1
公开(公告)日：2003-04-10
申请号：PCT/US2002/031937
申请日：2002-09-25
申请人： ERICSSON, INC. , BOTTOMLEY, Gregory, Edward , WANG, Yi-Pin, Eric , SOUROUR, Essam , GUEY, Jiann-Ching
发明人： BOTTOMLEY, Gregory, Edward , WANG, Yi-Pin, Eric , SOUROUR, Essam , GUEY, Jiann-Ching
IPC分类号： H04B7/005
CPC分类号： H04L25/0224 , H04B1/71052 , H04B1/712 , H04B7/0848 , H04B2201/709727 , H04L25/0204 , H04W52/16
摘要： A communications signal is processed to determine a proportionality relationship between a gain of a first channel (e.g., a pilot channel) and a gain of a second channel (e.g., a traffic channel) from a model of the first channel and information recovered from the second channel according to the model of the first channel. Symbol estimates may be generated from the information received over the second channel based on the determined proportionality relationship. In some embodiments, a gain multiplier may be estimated from information received over the second channel, a channel estimate for the first channel and a noise estimate for the first channel, for example, by generating despread values from the information received over the second channel, processing the despread values according to the channel estimate to generate symbol estimates, and generating the estimate of the gain multiplier from the noise estimate and the symbol estimates. Methods, apparatus and computer program products are provided.
摘要翻译：处理通信信号以确定来自第一信道的模型的第一信道（例如，导频信道）的增益和第二信道的增益（例如，业务信道）之间的比例关系，以及从第第二通道根据第一通道的型号。可以基于所确定的比例关系从通过第二信道接收的信息生成符号估计。在一些实施例中，可以通过第二信道接收的信息，第一信道的信道估计和第一信道的噪声估计来估计增益乘数，例如，通过在第二信道上接收的信息产生解扩值，根据信道估计处理解扩值以产生符号估计，以及根据噪声估计和符号估计生成增益乘数的估计。提供方法，仪器和计算机程序产品。

4. 发明申请

WO2003026145A2 APPARATUS AND METHOD FOR INTERSYMBOL INTERFERENCE COMPENSATION IN SPREAD SPECTRUM COMMUNICATIONS 审中-公开
标题翻译：传播频谱通信中互连干扰补偿的装置和方法
公开(公告)号：WO2003026145A2
公开(公告)日：2003-03-27
申请号：PCT/US2001/049165
申请日：2001-12-19
申请人： ERICSSON INC. , BOTTOMLEY, Gregory, Edward , OTTOSSON, Tony , WANG, Yi-Pin, Eric
发明人： BOTTOMLEY, Gregory, Edward , OTTOSSON, Tony , WANG, Yi-Pin, Eric
IPC分类号： H04B1/00
CPC分类号： H04L25/03305 , H04B2201/709727 , H04L25/03299
摘要： A communications signal representing symbols encoded according to respective portions of a spreading sequence is decoded. Time-offset correlations of the communications signal with the spreading sequence are generated. The time-offset correlations are combined to generate first estimates for the symbols. Intersymbol interference factors that include a relationship among different portions of the spreading sequence are determined, and a second estimate for one of the symbols is generated from the first estimates based on the determined intersymbol interference factors. An intersymbol interference factor may include a relationship between a first portion of the spreading sequence associated with the one symbol to a second portion of the spreading sequence associated with another symbol and may be determined, for example, from the spreading sequence and a channel estimate for a channel over which the communications signal is communicated. The invention may be embodied as methods and apparatus, for example, as a receiver included in a communications apparatus, such as a wireless terminal, wireless base station, or other wireless, wireline or optical communications apparatus.
摘要翻译：表示根据扩展序列的各个部分编码的符号的通信信号被解码。产生通信信号与扩展序列的时间偏移相关。时间偏移相关被组合以产生符号的第一估计。确定包括扩展序列的不同部分之间的关系的符号间干扰因子，并且基于确定的符号间干扰因子从第一估计生成符号之一的第二估计。符号间干扰因子可以包括与一个符号相关联的扩展序列的第一部分与与另一符号相关联的扩展序列的第二部分之间的关系，并且可以例如从扩展序列和用于通信信号通过该信道。本发明可以被实现为例如作为诸如无线终端，无线基站或其他无线，有线或光通信设备的通信设备中包括的接收机的方法和装置。

5. 发明申请

WO2005055457A1 METHOD AND APPARATUS FOR DS-CDMA INTERFERENCE SUPPRESSION USING CODE-SPECIFIC COMBINING 审中-公开
标题翻译：使用代码特定组合的DS-CDMA干扰抑制的方法和装置
公开(公告)号：WO2005055457A1
公开(公告)日：2005-06-16
申请号：PCT/US2004/038030
申请日：2004-11-12
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) , FULGHAM, Tracy, L. , BOTTOMLEY, Gregory, Edward , WANG, Yi-Pin, Eric , KHAYRALLAH, Ali, S.
发明人： FULGHAM, Tracy, L. , BOTTOMLEY, Gregory, Edward , WANG, Yi-Pin, Eric , KHAYRALLAH, Ali, S.
IPC分类号： H04B1/707
CPC分类号： H04B1/7107 , H04B1/712 , H04B2201/709727 , H04J13/0048
摘要： Interference, such as inter-symbol interference, from a symbol of interest in a RAKE receiver (200) is reduced. The RAKE receiver comprises a plurality of RAKE fingers (220), a processor (230), and a combiner (232). The plurality of RAKE fingers despread symbols received over multiple paths of a multi-path channel. The processor determines cross-correlations between symbol waveforms from different symbols and multiple paths. The combiner combines the despread symbols using the cross-correlations to reduce interference from the symbol of interest.
摘要翻译：来自RAKE接收机（200）中感兴趣的符号的干扰（例如符号间干扰）被减少。 RAKE接收机包括多个RAKE指（220），处理器（230）和组合器（232）。多个RAKE手指解扩在多路径信道的多个路径上接收的符号。处理器确定来自不同符号和多个路径的符号波形之间的互相关。组合器使用互相关组合解扩符号，以减少来自感兴趣符号的干扰。

6. 发明申请

WO2002071629A2 METHODS AND SYSTEMS FOR SELECTIVE FREQUENCY HOPPING IN MULTIPLE MODE COMMUNICATION SYSTEMS 审中-公开
标题翻译：用于多模式通信系统中选择性跳频跳跃的方法和系统
公开(公告)号：WO2002071629A2
公开(公告)日：2002-09-12
申请号：PCT/US2002/003438
申请日：2002-02-06
申请人： ERICSSON INC , KHAYRALLAH, Ali, S. , BOTTOMLEY, Gregory, Edward
发明人： KHAYRALLAH, Ali, S. , BOTTOMLEY, Gregory, Edward
IPC分类号： H04B
CPC分类号： H04L1/0015 , H04B1/713 , H04B7/2621 , H04L1/0001 , H04L1/0003 , H04L1/0009
摘要： Methods and systems for selecting a frequency hopping mode for a communication in a communication system having a plurality of transmission schemes are provided. One of the plurality of transmission schemes to be used for the communication is determined. One of a plurality of candidate frequency hopping modes is selected as the frequency hopping mode for the communication based on the determined transmission scheme for the communication. Methods and systems for transmitting a communication packet in a communication system having a plurality of transmission schemes are also provided.
摘要翻译：提供了用于为具有多种传输方案的通信系统中的通信选择跳频模式的方法和系统。确定要用于通信的多个传输方案之一。基于所确定的通信传输方案，选择多个候选跳频模式中的一个作为通信的跳频模式。还提供了用于在具有多种传输方案的通信系统中传输通信分组的方法和系统。

7. 发明申请

WO2002051087A3 METHODS AND SYSTEMS FOR EXTRACTING A JOINT PROBABILITY FROM A MAP DECISION DEVICE AND PROCESSING A SIGNAL USING THE JOINT PROBABILITY INFORMATION 审中-公开
公开(公告)号：WO2002051087A3
公开(公告)日：2002-06-27
申请号：PCT/US2001/046036
申请日：2001-11-15
申请人： ERICSSON INC. , KHAYRALLAH, Ali, S. , BOTTOMLEY, Gregory, Edward
发明人： KHAYRALLAH, Ali, S. , BOTTOMLEY, Gregory, Edward
IPC分类号： H04L1/00
摘要： Methods and devices for extracting a joint probability from a MAP decision device are provided. Probability information associated with a first symbol and a second symbol is obtained from the MAP decision device. A joint probability of the first symbol and the second symbol is determined from the probability information associated with the first symbol and the second symbol. Methods and devices for processing a signal containing information associated with a plurality of transmitted bits using the generated joint probability information are also provided. The MAP decision device in various embodiments is a demodulator or a decoder.

8. 发明申请

WO1998032243A1 METHOD AND APPARATUS FOR JOINT SYNCHRONIZATION OF MULTIPLE RECEIVE CHANNELS 审中-公开
标题翻译：多个接收通道的联合同步的方法和装置
公开(公告)号：WO1998032243A1
公开(公告)日：1998-07-23
申请号：PCT/US1997022042
申请日：1997-12-08
申请人： ERICSSON INC.
发明人： ERICSSON INC. , BOTTOMLEY, Gregory, Edward , CHENNAKESHU, Sandeep
IPC分类号： H04B07/08
CPC分类号： H04B7/0845
摘要： An apparatus for joint synchronization of digital communication signals from multiple receive channels is disclosed. In one embodiment, the apparatus comprises a control unit, a metric computer, a decimator and a switch. The control unit generates test sampling phase vectors for use in decimating the signals. The output of the decimator is used by the metric computer to form a metric predictive of the performance of a demodulator. The metric is used by the control unit to select an optimal sampling phase vector. In one embodiment, the metric computer calculates the signal to impairment plus noise ratio (SINR) at the output of the demodulator based on the decimated signals. An inverse correlation estimator may be used to generate an inverse impairment correlation estimate for use in calculating output SINR. In one embodiment, a data correlation estimator generates a data correlation estimate for use in calculating output SINR. The switch controls the communication of decimated signals to the interference canceling processor. In another embodiment, the apparatus includes a select unit and a metric computer. The select unit may include a control unit and a decimator. The metric computer also includes at least one decimator. Test sampling phase vectors are provided to the metric computer along with the input signals. The metric computer generates a metric predictive of the performance of the interference canceling processor and passes the metric to the control unit. The control unit selects a test sampling phase vector that optimizes performance of the interference canceling processor and passes the selected vector to the decimator, which decimates the input signals according to the sampling phases of the selected sampling phase vector. A method of joint synchronization of signals from multiple receive channels is also disclosed.
摘要翻译：公开了一种用于从多个接收通道联合同步数字通信信号的装置。在一个实施例中，该装置包括控制单元，度量计算机，抽取器和开关。控制单元产生用于抽取信号的测试采样相位矢量。度量计算机使用抽取器的输出来形成对解调器性能的度量的度量。该度量由控制单元用于选择最佳采样相位矢量。在一个实施例中，度量计算机基于抽取的信号计算在解调器的输出处的损害加噪声比（SINR）的信号。可以使用逆相关估计器来产生用于计算输出SINR的反向损害相关估计。在一个实施例中，数据相关估计器产生用于计算输出SINR的数据相关估计。开关控制抽取信号到干扰消除处理器的通信。在另一个实施例中，该装置包括选择单元和度量计算机。选择单元可以包括控制单元和抽取器。公制计算机还包括至少一个抽取器。测量采样相位矢量与输入信号一起提供给公制计算机。度量计算机产生对干扰消除处理器性能的度量，并将度量传递给控制单元。控制单元选择优化干扰消除处理器的性能的测试采样相位矢量，并将所选择的矢量传递给抽取器，抽取器根据所选采样相位矢量的采样相位对输入信号进行抽取。还公开了来自多个接收信道的信号的联合同步的方法。

9. 发明申请

WO1997040589A1 METHOD AND APPARATUS FOR INTERFERENCE DECORRELATION IN TIME AND SPACE 审中-公开
标题翻译：时间和空间干涉装饰的方法与装置
公开(公告)号：WO1997040589A1
公开(公告)日：1997-10-30
申请号：PCT/US1997006344
申请日：1997-04-14
申请人： ERICSSON INC.
发明人： ERICSSON INC. , BOTTOMLEY, Gregory, Edward
IPC分类号： H04B07/08
CPC分类号： H04B7/0845
摘要： Receivers and methods for receiving transmitted symbols are disclosed in which techniques are applied to jointly combat fading, time dispersion, and interference that is correlated in both space and time. These objects are accomplished by, for example, providing an inverse impairment correlation sequence estimate to the branch metric processor in addition to a channel estimate. The branch metric processor can then use this additional information to provide branch metrics that take into account the time correlation of impairment to improve the symbol hypotheses.
摘要翻译：公开了用于接收传输符号的接收机和方法，其中应用哪些技术共同防止空间和时间相关的衰落，时间分散和干扰。这些目的通过例如除了信道估计之外为分支度量处理器提供逆损伤相关序列估计来实现。然后，分支度量处理器可以使用该附加信息来提供分支度量，其考虑到损害的时间相关性以改善符号假设。

10. 发明申请

WO1997040588A1 METHOD AND APPARATUS FOR INTERFERENCE REJECTION WITH DIFFERENT BEAMS, POLARIZATIONS, AND PHASE REFERENCES 审中-公开
标题翻译：具有不同波段，极化和相位参考的干扰抑制方法和装置
公开(公告)号：WO1997040588A1
公开(公告)日：1997-10-30
申请号：PCT/US1997006343
申请日：1997-04-14
申请人： ERICSSON INC.
发明人： ERICSSON INC. , MOLNAR, Karl, James , BOTTOMLEY, Gregory, Edward , ÖSTMAN, Thomas
IPC分类号： H04B07/08
CPC分类号： H04B7/0854 , H04B7/0845 , H04B7/086 , H04B7/10 , H04L1/06 , H04L25/03331 , H04W16/28
摘要： A digital radio communication system includes processing to jointly mitigate the deleterious effects of fading, time dispersion and interference using interference rejection and diversity combining. The system employs a selection processor for preliminarily reducing the number of signals for interference rejection and diversity combining based on one or more criterion. The system accommodates signals from dual polarized antennas. In one particular embodiment, the system performs interference rejection and diversity combining by separating a received signal into its in-phase and quadrature components.
摘要翻译：数字无线电通信系统包括使用干扰抑制和分集组合来共同减轻衰落，时间分散和干扰的有害影响的处理。该系统采用选择处理器，用于基于一个或多个标准预先减少用于干扰抑制和分集组合的信号数量。该系统适应来自双极化天线的信号。在一个具体实施例中，系统通过将接收到的信号分离成其同相和正交分量来执行干扰抑制和分集组合。

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