基于FPGA的数字发射机的设计

Design of digital transmitter based on FPGA

软件无线电的基本思想是以一个通用、标准、模块化的硬件平台为依托,通过软件编程来实现无线电台的各种功能,从基于硬件、面向用途的电台设计方法中解放出来。随着软件无线电技术的发展,数字调制发射机具有调制中心频率可调、频移可编程、调制方式可重组、调制码速率高、可以与编码器合并扩展功能强等很多优点,成为今后发射机的发展主流。本文讨论了如何利用现场可编程器件FPGA结合VHDL语言实现了数字调制发射机。

The basic idea of software radio is a universal, standard, modular hardware platform to rely on, through software programming realize of wireless radio all sorts of functions, from hardware based and facing the USES of radio design method liberated.With the development of software radio technology, Digital modulation transmitter has frequency adjustable of Modulation center、Doppler-shift programmable、Modulation mode reconfigurable、high Modulation code rate ,many advantages of strong merge function expansion with encoder, it will be the mainstream of development of the transmitter,This paper discusses how to use field programmable device combined with VHDL language realized the FPGA digital modulation transmitter.