利用封闭形式最优(MSE)半带多速率滤波器设计从带宽有限的真实信号中提取同相和正交信号分量，并在摩托罗拉DSP56001/DSP56ADC16上实现

[Proceedings] ICASSP-92: 1992 IEEE International Conference on Acoustics, Speech, and Signal Processing Pub Date : 1992-03-23 DOI:10.1109/ICASSP.1992.226305

P. D. West, M. D. Austin

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引用次数: 1

摘要

从射频信号中提取同相分量(I)和正交分量(Q)是雷达和通信系统中的一个重要问题。在模拟系统中，图像杂散抑制是I/Q解调网络中两个通道的混频器和分配器之间相位和幅度平衡的函数。在提出的系统中，描述了一种全数字方案，该方案允许通过增加滤波器编码器来实现任意图像杂散抑制。提出了一种MMSE最优FIR半带滤波器，并给出了在摩托罗拉DSP56001数字信号处理器和DSP56ADC16 δ - σ a /D转换器上的实时实现结果。

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Extracting in-phase and quadrature signal components from a bandlimited real signal using a closed form optimal (MSE) halfband multirate filter design and its implementation on the Motorola DSP56001/DSP56ADC16

Extraction of the in-phase (I) and quadrature (Q) components from an RF signal is an important problem in radar and communication systems. In analog systems, the image spur suppression is a function of the phase and amplitude balance between the mixers and splitters in the two channel of the I/Q demodulation network. In the proposed system, an all digital scheme is described that allows arbitrary image spur rejection to be achieved by increasing the filter coder. An MMSE optimal FIR halfband filter is proposed and results are presented from a real-time implementation on the Motorola DSP56001 digital signal processor and the DSP56ADC16 delta-sigma A/D converter.<>

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[Proceedings] ICASSP-92: 1992 IEEE International Conference on Acoustics, Speech, and Signal Processing

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