OFDM-CDMA基带信号处理系统的研究与仿真  

Research and simulation of OFDM-CDMA base band signal processing system

作　　者：成洁[1] 岳瑾[1] 刘玫[1] 郭黎利[1] 

机构地区：[1]哈尔滨工程大学信息与通信工程学院,黑龙江哈尔滨150001

出　　处：《应用科技》2005年第3期23-24,27,共3页Applied Science and Technology

摘　　要：OFDM是一种串行数据的并行传输方案,它具有很高的频谱利用率.同时它在对抗窄带干扰、降低各子信道码速率进而消除ISI都有明显的优势;而CDMA技术拥有强大的多址接入能力.OFDM CDMA具有以上两者的优点,将成为 4G的核心技术.因而从应用的角度出发,阐述其基带信号处理平台的工作原理和系统结构,提出并且仿真一套理论上可行的设计方案及其主要参数.OFDM is a scheme for serial data stream to be transmitted by a parallel form, which can achieve highly effective use of frequency spectrum. Meanwhile, it has advantages in resistance of narrow band noise, reduction of the speed of sub-channel codes and elimination of ISI kinds. CDMA has strong ability in multi-addres saccess. OFDM-CDMA combines the superiorities of these two, making it become the key technique for 4G. So, from the angle of application,it is of great infortance to expatiate the wooking principle and the system architecture of the base band signal process platform, and put forward a design scheme with main parameters.

关 键 词：OFDM—CDMA 正交频分复用 多载波 SIMULINK仿真 

分 类 号：TN919.1[电子电信—通信与信息系统]