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    • 3. 发明申请
    • CALIBRATION OF SCALE FACTOR IN ADAPTATIVE EQUALIZERS
    • 量化因子在适应均衡中的校准
    • WO2005027445A1
    • 2005-03-24
    • PCT/US2004/029055
    • 2004-09-03
    • INTEL CORPORATION
    • BALAMURUGAN, GaneshCASPER, BryanJAUSSI, JamesMOONEY, Stephen
    • H04L25/03
    • H04L25/03038H03H21/0001H03H2021/0065H04L2025/03477
    • An adaptive equalizer finite impulse response (FIR) filter for high-speed communication channels with modest complexity, where the filter is iteratively updated during a training sequence by a circuit performing the update: h ( t + 1) = h ( t ) + µ [sgn { d ( t )} - sgn { z ( t ) - Kd ( t )}]sgn {x( t )} , where h ( t ) is the filter vector representing the filter taps of the FIR filter, x( t ) is the data vector representing present and past samples of the received data x ( t ), d ( t ) is the desired data used for training, z ( t ) is the output of the FIR filter, µ determines the memory or window size of the adaptation, and K is a scale factor taking into account practical limitations of the communication channel, receiver, and equalizer. Furthermore, a procedure and circuit structure is provided for calibrating the scale factor K.
    • 用于具有适度复杂度的高速通信信道的自适应均衡器有限脉冲响应(FIR)滤波器,其中通过执行更新的电路在训练序列期间迭代地更新滤波器:h(t + 1)= h(t)+μ [sgn {d(t)} - sgn {z(t)-Kd(t)}] sgn {x(t)},其中h(t)是表示FIR滤波器的滤波器抽头的滤波器向量, t)是表示接收数据x(t)的当前和过去样本的数据向量,d(t)是用于训练的期望数据,z(t)是FIR滤波器的输出,μ确定存储器或窗口 适应的大小,K是考虑通信信道,接收机和均衡器的实际限制的比例因子。 此外,提供了用于校准比例因子K的过程和电路结构。