摘要
随着现代通信技术的发展,特别是移动通信技术的高速发展,CDMA技术越来越被人们所关注。而基于FPGA的CDMA数字基带系统正是一种新兴的具有很大可行性的技术。本文给出了CDMA数字基带收发系统的设计方案,并以Altera MAX+P1usII为硬件开发平台,利用FPGA实现了4路信息信号的扩频、编码调制和解扩、解调、验证了初始方案的可行性。运用VHDL语言,实现对CDMA通讯系统的上行链路数字部分进行设计,对有关模块的编译,编译通过后的结果,以及使用ACE1k系列芯片通过仿真得到波形,证明了整个系统原理和设计提出的正确性。
Along with the modern communication technology development,specially mobile communication technology high-speed development,the CDMA technology is more and more paid attention by the people.Yet based on FPGA component CDMA numeral baseband receiving and dispatching system simulation,it is a technology which is new and has enough feasibilities.This article introduced the system,which is a kind of design,based on the stage of the hard environment：Altera MAX＋P1usII.With using the FPGA to work out four roads about the information signals for spreading spectrum,pulsing code modulation,out spreading spectrum,and out pulsing.It had improved the abilities about the early proposal.In the end,it has made a breadboard for the CDMA numeral baseband receiving and dispatching system using the instrument of the EDA,for helping to improve it.This article using the VHDL language to achieve the design of the digital part of CDMA communication system＇s uplink,and compiled to the some relevant modules.Finally,we won the waveforms by simulation using the ACE1k series chips.It proved the accuracy of the principle and design of the system.
出处
《电子测试》
2011年第4期69-72,108,共5页
Electronic Test
