一种改进的多载波并行组合扩频通信系统  

An Improved Multi-carrier Parallel Combined Spread Spectrum Communication System

作　　者：丁杰 丁丹 DING Jie;DING Dan(Department of Electronic and Optical Engineering,University of Aerospace Engineering,Beijing 101416 China)

机构地区：[1]航天工程大学电子与光学工程系,北京101416

出　　处：《自动化技术与应用》2023年第4期74-78,129,共6页Techniques of Automation and Applications

摘　　要：本文结合正交频分复用技术和并行组合扩频技术,在原有的并行组合扩频技术上加以改进,提出一种新的多载波并行组合扩频通信方式,与原有的PCSS-OFDM通信技术相比,在带宽相同的情况下,提高了频带利用率和数据传输速率。并使用MATLAB对该系统在AWGN信道、多径信道、非线性放大和多音干扰的情况下进行仿真验证。结果表明与单载波并行组合扩频技术和未改进的多载波并行组合扩频技术相比,改进的多载波并行组合扩频技术误码率更低,更适用于复杂信道以及其他恶劣的通信环境。This article combines orthogonal frequency division multiplexing technology and parallel combined spread spectrum technology to improve on the original parallel combined spread spectrum technology,and proposes a new multi-carrier parallel combined spread spectrum communication method,which is compatible with the original PCSS-OFDM communication technology,in the case of the same bandwidth,it improves the frequency band utilization rate and the data transmission rate.And use MATLAB to simulate and verify the system under the conditions of AWGN channel,multipath channel,nonlinear amplification and multi-tone interference.The results show that compared with the single-carrier parallel combined spread spectrum technology and the unmodified multi-carrier parallel combined spread spectrum technology,the improved multi-carrier parallel combined spread spectrum technology has a lower bit error rate and is more suitable for complex channels and other harsh communications surroundings.

关 键 词：并行组合扩频(PCSS) 正交频分复用(OFDM) 多载波扩频 扩频通信系统 

分 类 号：TN914[电子电信—通信与信息系统]