全数字可配置信道分路技术的设计方法

摘要

In this paper,a design method of digital reconfigurable channel-separation is proposed. It is a design of serial configu-ration for polyphase array-FFT algorithm,in which the polyphase filter banks and FFT stage number are reconfigurable flexibly accord-ing to the channel number. Even up to hundreds of channels are configured. The paper presents in detail the implementation of the poly-phase filter banks and FFT,two main modules involved in the design methods of digital reconfigurable channel-separation. Finally,the paper realizes 4-,8-,16- channel FPGA design with this design method. In addition,the hardware resource occupation and BER are presented,to prove the feasibility of this design method.%提出一种全数字可配置信道分路技术的设计方法，是针对多相阵列 FFT算法进行的一种串行结构设计，能够按照分路路数灵活配置多相滤波器组和 FFT级数，可支持甚至达到上百路的分路路数。对全数字可配置信道分路的设计方法中涉及到的多相滤波器组和 FFT两个主要模块的 FPGA实现方法进行了详细阐述。基于该设计方法进行了4路、8路和16路信道分路应用的 FPGA硬件设计，给出了硬件占用资源情况和误码测试结果，从而证明该设计方法的可实现性。