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    • 4. 发明授权
    • System and method for selecting parameters for compressing coefficients for nodescale vectoring
    • 用于选择用于压缩节点尺度矢量化系数的参数的系统和方法
    • US09088350B2
    • 2015-07-21
    • US13552554
    • 2012-07-18
    • Stephanie F. Pereira
    • Stephanie F. Pereira
    • H04B17/00H04B3/32H04L1/00
    • H04B3/32H04B3/487H04B7/0456H04L1/0002H04L1/0009H04L25/03343H04L25/03891H04L2025/03426
    • In general, the present invention relates to methods and systems for optimizing the precoder coefficient compression parameters for reducing the storage and other demands on a vectored DSL system. Embodiments of the invention can be implemented in conjunction with various existing coefficient compression techniques such as quantization of coefficients and decimation in frequencies. According to certain aspects, the compression parameters (e.g. Golomb modulus and quantization level) are selected for each of a plurality of macrobands so as to optimize the overall data rate of the system for any given channel condition. According to further aspects, the compression parameters are computed to ensure that the compressed coefficients for all macrobands do not exceed the available memory allocated for storing the coefficient data.
    • 通常,本发明涉及用于优化预编码器系数压缩参数以减少对向量DSL系统的存储和其他需求的方法和系统。 本发明的实施例可以结合各种现有的系数压缩技术来实现,例如系数的量化和频率的抽取。 根据某些方面,为多个宏频带中的每一个选择压缩参数(例如,哥伦布模数和量化级别),以便优化用于任何给定信道条件的系统的总体数据速率。 根据另外的方面,计算压缩参数以确保所有宏频带的压缩系数不超过分配用于存储系数数据的可用存储器。