针对一般无线通信系统抗干扰、抗噪声以及抗多径性能力差的缺点，提出了一种基于FPGA 的直接序列 扩频系统设计。该设计采用63 位的pn 码作为扩频调制的码序列，在发送端，对信息码进行扩频调制; 在接收端，对 收到的扩频调制信号进行解扩，增强了系统的抗干扰性和可靠性。同时在Altera 公司的Quartus II 软件中，使用硬件描 述语言VHDL 和原理图相结合的方法进行了电路的设计实现。通过把电路下载到Altera 公司的CycloneIII 的 EP3C10E144C8N 芯片中调试

This user guide describes the Altera megafunction IP cores that implement the following memory modes: ■ RAM:1-Port—Single-port RAM ■ RAM:2-Port—Dual-port RAM ■ ROM:1-Port—Single-port ROM ■ ROM:2-Port—Dual-port ROM Altera provides two IP c

FPGA design software that easily integrates into your design flow saves time and improves productivity. The Altera® Quartus® II software provides you with a command-line executable for each step of the FPGA design flow to make the design

本文介绍了AES加密算法通过不同的功能结构的FPGA实现，语言背景为VHDL-This paper details Implementation of the Encryption algorithm AES under VHDL language In FPGA by using different architecture of mixcolumn. We then review this research investigates the AES algorithm in FPGA