An FPGA System for Digital Signal Processing and CAD tools

高性能的信息通信和处理系统由多个快速处理数字信号的LSI（大规模集成电路）组成。在用于可变长度编码等的LSI的情况下，由于长度不是唯一确定的，因此有必要开发处理可变长度的灵活LSI。FPGA（现场可编程门阵列）是LSI，用户可以在其上通过编程设计任何电路。在本研究中，我们开发了一个新的灵活的FPGA系统的数字信号处理和CAD（计算机辅助设计）工具，实现任意的数字信号处理电路的FPGA系统。本文的主要研究成果如下：1. FPGA系统的开发.软硬件协同设计CAD工具的开发.高级综合CAD工具的开发.布局CAD工具的开发.开发的FPFA系统的应用。

High-performance information communication and processing systems consist of several LSIs (Large Scale Integrated circuits) which process digital signals rapidly. In case of LSIs for variable length coding, etc., since the length is not determined uniquely, it is necessary to develop flexible LSIs which handle variable lengths. FPGAs (Field-Programmable Gate Arrays) are LSIs on which users can design any circuits by programming. In this research, we have developed a new flexible FPGA system for digital signal processing and CAD (Computer-Aided Design) tools which realize arbitrary digital signal processing circuits on the FPGA system. Our research results are summarized as follows.1. Development of FPGA system.2. Development of hardware/software codesign CAD tools.3. Development of high-level synthesis CAD tools.4. Development of layout CAD tools.5. Applications of developed FPFA system.