公开(公告)号：US20070104254A1

公开(公告)日：2007-05-10

申请号：US11566820

申请日：2006-12-05

Applicant: Gregory Bottomley ,  Yi-Pin Wang

Inventor： Gregory Bottomley ,  Yi-Pin Wang

IPC: H04B1/00

CPC classification number: H04B1/712 ,  H04B1/7107 ,  H04B1/7115 ,  H04B2201/709727 ,  H04J13/0077

Abstract: Multi-transmitter interference caused by one or more interfering own-cell and/or other-cell transmitters is reduced in a RAKE-based receiver. The RAKE-based receiver comprises a plurality of RAKE fingers, a processor and a combiner. The plurality of RAKE fingers are configured to despread received symbols, wherein a delay for a first one of the plurality of RAKE fingers corresponds to a symbol of interest transmitted by a first transmitter and a delay for a second one of the plurality of RAKE fingers corresponds to an interfering symbol transmitted by a second transmitter. The processor is configured to determine a cross-correlation between the symbol of interest and the interfering symbol. The combiner is configured to combine the symbol of interest with the interfering symbol using the cross-correlation to reduce interference attributable to the interfering symbol from the symbol of interest.

Abstract translation: 在基于RAKE的接收机中减少由一个或多个干扰自身小区和/或其他小区发射机引起的多发射机干扰。 基于RAKE的接收机包括多个RAKE指，处理器和组合器。 多个RAKE拨号被配置为对接收的符号进行解扩，其中多个RAKE指中的第一个RAKE指的延迟对应于由第一发送器发送的感兴趣的符号，并且多个RAKE指中的第二个对应的延迟对应 到由第二发射机发射的干扰符号。 处理器被配置为确定感兴趣的符号和干扰符号之间的互相关。 组合器被配置为使用互相关来组合感兴趣的符号与干扰符号，以减少归因于感兴趣符号的干扰符号的干扰。

公开(公告)号：US20070047628A1

公开(公告)日：2007-03-01

申请号：US11215584

申请日：2005-08-30

Applicant: Tracy Fulghum ,  Douglas Cairns

Inventor： Tracy Fulghum ,  Douglas Cairns

IPC: H04B1/00

CPC classification number: H04B1/712 ,  H04B2201/709727

Abstract: A wireless communication device includes a Generalized RAKE (G-RAKE) receiver circuit that is configured to determine a traffic-to-pilot gain scaling parameter as part of the impairment correlation determination process that underlies (G-RAKE) combining weight generation. In this manner, the receiver circuit conveniently and accurately accounts for gain differences between the pilot channel of a received CDMA signal, as used for channel estimation, and the traffic channel(s) of the CDMA signal, which carry received data to be recovered. The gain difference accounting enables proper demodulation of amplitude-modulated traffic signals. By way of non-limiting example, such gain scaling may be used for demodulating/decoding High Speed Downlink Packet Access (HSDPA) signals used in Wideband Code Division Multiple Access (W-CDMA) systems.

Abstract translation: 无线通信设备包括广义RAKE（G-RAKE）接收器电路，其被配置为确定作为组合权重生成（G-RAKE）的基础的损害相关确定过程的一部分的业务到引导增益缩放参数。 以这种方式，接收机电路方便且准确地考虑了用于信道估计的接收的CDMA信号的导频信道与携带接收的要恢复的数据的CDMA信号的业务信道之间的增益差。 增益差计算能够对幅度调制的交通信号进行适当的解调。 作为非限制性示例，这种增益缩放可以用于解调/解码在宽带码分多址（W-CDMA）系统中使用的高速下行链路分组接入（HSDPA）信号。

公开(公告)号：US20060007990A1

公开(公告)日：2006-01-12

申请号：US11219626

申请日：2005-09-02

Applicant: Carmela Cozzo ,  Douglas Cairns ,  Gregory Bottomley ,  Ali Khayrallah ,  Hakan Eriksson

Inventor： Carmela Cozzo ,  Douglas Cairns ,  Gregory Bottomley ,  Ali Khayrallah ,  Hakan Eriksson

IPC: H04B1/69

CPC classification number: H04B1/7103 ,  H04B1/712 ,  H04B2201/709727 ,  H04L25/0212 ,  H04L25/0222 ,  H04L25/0228

Abstract: A wireless communication receiver, such as the receiver included in a wireless communication transceiver implemented in a base station or in a mobile station of a wireless communication network, includes a parametric G-RAKE receiver circuit and a method that compute parametric scaling parameters on a per transmission interval basis. In one embodiment, measured impairment correlations are obtained for an individual transmission slot and used to estimate instantaneous values of the scaling parameters. One or both of those instantaneous values are then constrained according to one or more defined limits. In other embodiments, multiple transmission slots are used to increase the number of measurements available to estimate the scaling parameters, with parameter constraining optionally applied. Further embodiments use iterative methods and/or solve for one parameter, and use the results to obtain the other parameter(s). One or more of these embodiments can be improved through the use of error correction/detection information.

Abstract translation: 无线通信接收机，例如包括在基站或无线通信网络的移动台中的无线通信收发器中的接收机，包括参数化的G-RAKE接收机电路和一个在每个接收机上计算参数缩放参数的方法 传输间隔的基础。 在一个实施例中，针对单个传输时隙获得测量的损害相关性，并用于估计缩放参数的瞬时值。 然后根据一个或多个限定的限制来限制那些瞬时值中的一个或两个。 在其他实施例中，使用多个传输时隙来增加可用于估计缩放参数的测量数量，并且可选地应用参数约束。 另外的实施例使用迭代方法和/或解决一个参数，并且使用结果来获得其他参数。 可以通过使用错误校正/检测信息来改进这些实施例中的一个或多个。

公开(公告)号：US06985518B2

公开(公告)日：2006-01-10

申请号：US10017158

申请日：2001-12-14

Applicant: Jorgen S. Nielsen

Inventor： Jorgen S. Nielsen

IPC: H04B1/707 ,  H04B7/02

CPC classification number: H04B1/7115 ,  H04B1/7093 ,  H04B2201/709727

Abstract: An adaptive generalized matched filter (AGMF) rake receiver system includes a rake receiver and an AGMF weight determination module. The rake receiver is coupled to a spread spectrum input signal and applies a vector of weight signals to the spread spectrum input signal to compensate for dependant noise and generate a decision variable. The AGMF weight determination module monitors the decision variable and generates the vector of weight signals, wherein optimal values for the vector of weight signals are calculated by the AGMF weight determination module by varying the vector of weight signals until the signal to noise ratio of the decision variable reaches a peak value

公开(公告)号：US20050282500A1

公开(公告)日：2005-12-22

申请号：US10869527

申请日：2004-06-16

Applicant: Yi-Pin Wang ,  Gregory Bottomley ,  Rajaram Ramesh

Inventor： Yi-Pin Wang ,  Gregory Bottomley ,  Rajaram Ramesh

IPC: H04B7/005 ,  H04L1/00 ,  H04L1/20 ,  H04Q7/20

CPC classification number: H04L1/20 ,  H04B2201/709727 ,  H04L1/0003 ,  H04L1/0026 ,  H04L1/206

Abstract: A receiver circuit suppresses effects of “benign” impairment from the calculation of received signal quality estimates, such that the estimate depends primarily on the effects of non-benign impairment. For example, a received signal may be subject to same-cell and other-cell interference plus noise, which is generally modeled using a Gaussian distribution, and also may be due to certain forms of self-interference, such as quadrature phase interference arising from imperfect derotation of the pilot samples used to generate channel estimates for the received signal. Such interference generally takes on a distribution defined by the pilot signal modulation, e.g., a binomial distribution for binary phase shift keying modulation. Interference arising from such sources is relatively “benign” as compared to Gaussian interference and thus should be suppressed or otherwise discounted in signal quality calculations. Suppression may be based on subtracting benign impairment correlation estimates from total impairment correlation estimates, or on filtering the benign impairment in channel estimation.

Abstract translation: 接收机电路抑制从接收到的信号质量估计的计算中的“良性”损伤的影响，使得估计主要取决于非良性损伤的影响。 例如，接收到的信号可以经受相同小区和其他小区干扰加噪声，其通常使用高斯分布来建模，并且还可能是由于某些形式的自干扰，例如由 用于产生接收信号的信道估计的导频样本的不完全解旋。 这种干扰通常采用由导频信号调制定义的分布，例如二进制相移键控调制的二项分布。 与高斯干扰相比，从这些源产生的干扰相对“良性”，因此在信号质量计算中应被抑制或以其他方式折扣。 抑制可以基于从总损伤相关性估计中减去良性损伤相关估计，或者在滤波信道估计中的良性损伤。

公开(公告)号：US06956892B2

公开(公告)日：2005-10-18

申请号：US09878861

申请日：2001-06-11

Applicant: Juha Ylitalo

Inventor： Juha Ylitalo

IPC: H04B1/707 ,  H04B7/04 ,  H04L27/30

CPC classification number: H04B1/7075 ,  H04B1/7107 ,  H04B1/7117 ,  H04B7/0408 ,  H04B7/0491 ,  H04B2201/709727

Abstract: A receiver receives signals which are at least partially known and which have followed a plurality of different paths to said receiver. The receiver has an arrangement for dividing the area of coverage of said receiver into a plurality of sections. A plurality of receiving units are provided to process a different one of said signals to identify the at least partially known part of said signal. A controller is coupled to the output of said dividing arrangement for selecting the signals which are to be allocated to the respective receiving units and an interference removing arrangement is coupled to the output of the receiver units to remove interference.

Abstract translation: 接收机接收至少部分已知的信号，并且已经遵循到所述接收机的多条不同路径。 接收机具有用于将所述接收机的覆盖区域划分成多个部分的布置。 提供多个接收单元以处理不同的一个所述信号以识别所述信号的至少部分已知的部分。 控制器耦合到所述分配装置的输出端，用于选择要分配给各个接收单元的信号，并且干扰去除装置耦合到接收机单元的输出以消除干扰。

公开(公告)号：US20050201499A1

公开(公告)日：2005-09-15

申请号：US10799322

申请日：2004-03-12

Applicant: Elias Jonsson

Inventor： Elias Jonsson

IPC: H04L1/00 ,  H04L1/20 ,  H04L5/12 ,  H04L25/03

CPC classification number: H04L1/20 ,  H04B2201/709727 ,  H04L1/0026 ,  H04L25/03006

Abstract: A processing circuit and method generate signal quality estimates based on scaling measured inter-symbol interference (ISI) in a received signal according to a cancellation metric corresponding to ISI cancellation performance of the receiver. By accounting for ISI cancellation performance of the receiver based on a simple scaling metric, accurate received signal quality measurements are obtained in a manner that accounts for un-cancelled ISI in the received signal without requiring use of potentially complex multipath combining weight calculations in the signal quality calculation. Signal quality estimation results may be used for sending corresponding Channel Quality Indicators, communication link transmit power control commands, etc. In some embodiments, the cancellation metric is maintained as a dynamic value based on measured ISI cancellation performance, while in other embodiments the cancellation metric comprises a pre-configured value stored in memory, for example.

Abstract translation: 处理电路和方法根据对应于接收机的ISI消除性能的消除度量，基于接收信号中的测量符号间干扰（ISI）的缩放来生成信号质量估计。 通过基于简单的缩放度量来考虑接收机的ISI取消性能，以接收到的信号中考虑未取消的ISI的方式获得准确的接收信号质量测量，而不需要在信号中使用潜在的复数多径组合权重计算 质量计算。 信号质量估计结果可以用于发送相应的信道质量指示符，通信链路发射功率控制命令等。在一些实施例中，基于测量的ISI消除性能将消除度量维持为动态值，而在其他实施例中，消除度量 包括例如存储在存储器中的预配置值。

公开(公告)号：US20050180493A1

公开(公告)日：2005-08-18

申请号：US10783049

申请日：2004-02-19

Applicant: Kari Hooli ,  Kai Kiiskila ,  Jari Ylioinas ,  Markku Juntti

Inventor： Kari Hooli ,  Kai Kiiskila ,  Jari Ylioinas ,  Markku Juntti

IPC: H04B1/707 ,  H04B7/02 ,  H04B7/06 ,  H04J99/00 ,  H04L25/03

CPC classification number: H04B1/7105 ,  H04B7/02 ,  H04B2201/709727

Abstract: Disclosed is a chip-level or a symbol-level equalizer structure for a multiple transmit and receiver antenna architecture system that is suitable for use on the WCDMA downlink. The equalizer structure takes into account the difference in the natures of inter-antenna interference and multiple access interference and suppresses both inter-antenna interference and multiple access interference (MAI). Enhanced receiver performance is achieved with a reasonable implementation complexity. The use of the CDMA receiver architecture, in accordance with this invention, enables the realization of increased data rates for the end user. The CDMA receiver architecture can also be applied in conjunction with space-time transmit diversity (STTD) system architectures.

Abstract translation: 公开了适用于WCDMA下行链路上的多发射和接收机天线体系结构的芯片级或符号级均衡器结构。 均衡器结构考虑了天线间干扰和多接入干扰性质的差异，并抑制天线间干扰和多接入干扰（MAI）。 通过合理的实现复杂度实现增强的接收机性能。 根据本发明，使用CDMA接收机架构能够实现最终用户增加的数据速率。 CDMA接收机架构也可以结合时空发射分集（STTD）系统架构来应用。

公开(公告)号：US20050163199A1

公开(公告)日：2005-07-28

申请号：US10672492

申请日：2003-09-26

Applicant: Yi-Pin Wang

Inventor： Yi-Pin Wang

IPC: H04L25/02 ,  H04L27/38 ,  H04B1/707

CPC classification number: H04B1/712 ,  H04B2201/709727 ,  H04L25/0226 ,  H04L27/3809

Abstract: An exemplary receiver demodulates an amplitude modulated data signal received in association with a reference signal, wherein a transmit power of the data signal is unknown to the receiver circuit, by determining a scaling factor based on the reference and data signals. Thus, an exemplary receiver estimates scaling factors indicative of the received amplitude of a data channel signal that is transmitted at a power different from that of the reference channel being used to estimate the radio channel properties. The scaling factor may be used to correct the amplitude of information symbols recovered from a received data signal such that they are moved closer in amplitude to intended points within an amplitude modulation constellation and/or to scale nominal points in a reference constellation used in demodulating the received symbols.

Abstract translation: 示例性接收机解调与参考信号相关联接收的幅度调制数据信号，其中通过基于参考和数据信号确定缩放因子，数据信号的发射功率对于接收机电路是未知的。 因此，示例性接收机估计指示以与用于估计无线电信道属性的参考信道不同的功率发送的数据信道信号的接收幅度的缩放因子。 缩放因子可以用于校正从接收的数据信号恢复的信号符号的幅度，使得它们在幅度上移动到幅度调制星座图中的预期点更接近，和/或缩放用于解调所述信号的参考星座中的标称点 收到的符号。

公开(公告)号：US06922434B2

公开(公告)日：2005-07-26

申请号：US09845950

申请日：2001-04-30

Applicant: Yi-Pin Eric Wang ,  Gregory E. Bottomley ,  Kenzo Urabe

Inventor： Yi-Pin Eric Wang ,  Gregory E. Bottomley ,  Kenzo Urabe

IPC: H04B1/7117 ,  H04B1/712 ,  H04B1/69

CPC classification number: H04B1/712 ,  H04B1/7117 ,  H04B2201/709727

Abstract: 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.

Abstract translation: 提供了恢复在通信介质中根据扩展序列发送的扩频信号中编码的信息的方法，其中从通信介质接收扩频信号并与扩展序列相关联以产生多个时间偏移相关。 这些时间偏移相关中的一些可被设计为消除已知的干扰信号。 然后可以选择多个时间偏移的子集，然后可以使用加权组合来组合对应的业务相关性，以估计在所发送的扩展频谱信号中编码的信息。 还提供了实现这些方法的接收器。