基于寻址的通信信号调制算法实现  

Implement of Modulation Algorithm for Communication Signal Based on Look-up Table

作　　者：龚艳琼 曾春平[1] 马琨[1] 赵建军[1] GONG Yan-qiong;ZENG Chun-ping;MA Kun;ZHAN Jian-jun(School of Science, Kunming University of Science and Technology, Kunming Yunnan 650504, China)

机构地区：[1]昆明理工大学理学院

出　　处：《软件》2019年第8期194-198,共5页Software

摘　　要：在无线通信技术中,为了充分利用无线信道的时变特性,自适应调制技术依然是当前研究热点。但不管哪种调制技术,调制器中查找表内容总是根据特定通信系统设置且固定不可变,导致查找表中内容不可编程,使输出的星座图案无法根据实际通信环境变化而变化,以致不同通信系统间调制方式不能完全兼容。本文简要介绍了自适应调制技术的发展,阐述并实现了一种基于寻址的通信信号调制算法,达到查找表可编程的目的。采用Verilog HDL语言进行算法设计,通过QuartusII和modelsim平台联合进行软件仿真,最后将程序下载到Altera公司提供的DE4(EP4SGX230KF40C2)开发板并联合MATLAB工具实现FPGA(Field-Programmable Gate Array)验证。仿真验证结果表明此方案可行。For researchers who worked on the wireless communication systems, adaptived modulation technology had been a hot topic in order to make full use of fading channels. However there was no modulator yet for making programmable look-up table(LUT) and variable constellation pattern. And different communication system also needs different modulator. This paper introduced the development of adaptive modulation scheme in wireless communication system. Besides, a modulation algorithm based on look-up table for communication signal that could get programmable LUT and variable constellation was implement. During design, modeling and simulation were conducted using Verilog HDL language in Quartus II platform with modelsim tool. This modulation scheme was implemented by downloading the related programming data files to FPGA(Field-Programmable Gate Array) development board from Altera company that named DE4(EP4 SGX230 KF40 C2). Its datas were analyzed by using MATLAB tool. The simulation and experiment results indicate that the design scheme is feasible.

关 键 词：可编程查找表 自适应调制 FPGA 无线通信 星座图 

分 类 号：TN911.3[电子电信—通信与信息系统]