基于FPGA的参数逐突发可变调制器设计

Design of Modulator with Alterable Parameters by Bursts Based on FPGA

提出了一种基于直接频率合成器(DDS)和现场可编程门阵列(FPGA)实现的参数逐突发可变调制器的设计方法。对变速率、变内插滤波器等进行了重点分析,并对突发基带信号进行了测试。结果表明该调制器具有多模式、多项参数可变等特点,支持卷积、Turbo、LDPC编码方式,支持突发、连续、跳频多种工作方式,可用于多频时分多址(MF-TDMA)通信系统,可适用于多载波多速率的数据传输。

An implementation scheme of modulator with alterable parameters by bursts based on DDS and FPGA is proposed.The multi-rate and the interpolation filters are analyzed respectively.It shows that the modulator has the advantages of multiple modes and alterable parameters by the test result.The coding modes of the modulator include convolution,Turbo and LDPC.The modulator works well in operation modes of burst,series and frequency hopping.It can be used in the MF-TDMA communication systems,especially for multi-carrier and multi-rate data transmission.