摘要
无线通信是现代通信技术中的一种重要通信方式,信号在传输时由于受电磁波自身物理特性和环境因素的影响,其传输质量会大幅下降,并最终导致信号的多径衰落,而采用分集合并技术可以大大提高无线信道的链路性能。在充分研究分集合并技术的理论基础上,针对无线信道的多径衰落问题,设计了分别将多种合并技术和不同的调制方式相结合的信号传输模式,并对各个模式进行仿真分析。研究结果表明,与传统的单一传输模式相比,所设计的分集合并信号传输模式能在保证较低误码率的前提下,系统成本更低,更有利于实际应用。
Wireless communication is an important methodinmodern communication technologies.Influenced by the physical characteristics of electromagnetic wavesand the environmental factors,the transmission quality of information will decline dramatically,and eventually lead to multipath fading of signal.The link performance of wireless channel can be greatly improved by using diversity combining techniques.On the basis of fully studying the theory of diversity combining techniques,aiming at the multipath fading problem of wireless channel,this paper designs the signal transmission modes which combines multiple combining techniquesand different modulation methods respectively,and simulates and analyzes each mode.The research results show that compared with the traditional single transmission mode,the diversity combining signal transmission mode designed can ensure lower bit error rate,lower system cost,and more conducive to practical application.
作者
臧鹏
Zang Peng(College of Computer and Information,Hohai University,Nanjing 211100,China)
出处
《国外电子测量技术》
2020年第6期65-69,共5页
Foreign Electronic Measurement Technology
关键词
无线通信
多径衰落
分集合并技术
wireless communication
multipath fading
diversity combining techniques
