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    • 3. 发明申请
    • Multi-pass interference reduction in a GSM communication system
    • GSM通信系统中的多通道干扰减少
    • US20050084045A1
    • 2005-04-21
    • US10688714
    • 2003-10-17
    • Kenneth StewartRaja BachuMichael BuckleyClint Wilkins
    • Kenneth StewartRaja BachuMichael BuckleyClint Wilkins
    • H04L25/03H04B1/10
    • H04L25/03038H04L2025/03407H04L2025/03477
    • An iterative method (400) and apparatus (200) for a receiver for reducing interference in a desired signal in a GSM communication system uses a finite-impulse-response filter combined with alternate quadrature component output selection for alternate linear equalization are disclosed The method includes inputting a burst of data of a received waveform including interference, training an alternate linear output filter with a midamble of known quadrature phase, providing an estimate of the desired signal by operating on the received waveform with the finite-impulse-response filter, generating log likelihood ratio estimates for a plurality of bits in the burst of data, selecting bits from the burst of data base upon a predetermined condition, and re-training the alternate linear output filter to provide a second improved estimate of the desired signal.
    • 公开了一种用于减少GSM通信系统中的期望信号的干扰的接收机的迭代方法(400)和装置(200),所述方法包括与用于替代线性均衡的交替正交分量输出选择组合的有限脉冲响应滤波器。 输入包括干扰的接收波形的数据脉冲串,训练具有已知正交相位的中间码的交替线性输出滤波器,通过利用有限脉冲响应滤波器对所接收的波形进行操作来提供期望信号的估计,生成日志 在数据突发中的多个比特的似然比估计,在预定条件下从数据库突发中选择比特,并且重新训练替代线性输出滤波器以提供期望信号的第二改进估计。
    • 9. 发明授权
    • Wireless receiver and method employing forward/backward recursive covariance based filter coefficient generation
    • 采用前向/后向递归协方差滤波系数生成的无线接收机和方法
    • US07130342B2
    • 2006-10-31
    • US10330629
    • 2002-12-27
    • Michael Eoin BuckleyRaja BachuKenneth Stewart
    • Michael Eoin BuckleyRaja BachuKenneth Stewart
    • H04H7/30
    • H04L25/03159
    • A wireless receiver and method employs a forward/backward recursive covariance based filter coefficient generation scheme for equalizing a received wireless signal, such as a CDMA signal or other suitable signal. A forward/backward recursive covariance based filter coefficient generating circuit (206) includes a forward recursion portion (300) that receives data representing channel estimates (18) of a communication channel, and data representing an auto-covariance matrix (22). The forward recursion portion (300) produces a set of output values (306) from each iteration stage (400a–400n) of the forward recursion portion (300). The set of output values (306) are stored and a backward recursion portion (302) obtains the set of output values (306) and also receives the data representing the auto-covariance matrix (22), and generates filter coefficients (208) based on this information.
    • 无线接收机和方法采用基于前向/后向递归协方差的滤波器系数生成方案来均衡接收到的无线信号,例如CDMA信号或其它合适的信号。 基于正向/反向递归协方差滤波器系数生成电路(206)包括:正向递归部分(300),其接收表示通信信道的信道估计(18)的数据,以及表示自协方差矩阵(22)的数据。 正向递归部分(300)从正向递归部分(300)的每个迭代阶段(400a〜400n)产生一组输出值(306)。 存储输出值集合(306),并且反向递归部分(302)获得输出值集合(306),并且还接收表示自协方差矩阵(22)的数据,并且生成基于滤波器系数(208)的 对此信息。