基于FPGA的直扩体制复合维度信息传输技术设计与实现

Design and Implementation of Multi-Dimensional Information Transmission Technology for Direct Sequence Spread Spectrum Based on FPGAs

为满足基于直扩体制的复合维度信息传输技术的工程化应用需求,针对多序列映射二维信息调制、多相关通道并行捕获和伪码跟踪过程进行理论分析的基础上,采用FPGA平台,对直扩体制复合维度信息传输信号的产生和接收关键功能电路进行设计和仿真实现。仿真结果证明设计实现的多序列映射二维信息调制模块可实现复合维度信息传输信号的产生功能,多相关通道并行捕获模块可实现对伪随机序列的正确捕获,跟踪模块可实现正确的伪码跟踪,极大提高了复合维度直接序列扩频技术的工程化水平,为复合维度直扩技术提供实践基础,具有较强的实际应用价值。This study aims to advance multidimensional information transmission technology using direct sequence spread spectrum for real-world engineering applications. This paper offers an in-depth theoretical analysis of multi-sequence mapping, two-dimensional information modulation, parallel acquisition of correlated channels, and pseudocode tracking. The project centers on designing and simulating key circuits for generating and receiving multidimensional transmission signals using a field-programmable gate array (FPGA) platform. Simulation results show that the multi-sequence mapping and two-dimensional modulation module effectively produces multidimensional transmission signals. Furthermore, the parallel acquisition module for multiple correlated channels accurately captures pseudo-random sequences, and the tracking module successfully performs pseudocode tracking. These advancements greatly improve the engineering capabilities of composite dimension direct sequence spread spectrum technology, offering a strong foundation and substantial practical value.