一种自适应并行组合扩频散射通信系统  

An Adaptive Parallel Combined Spread Spectrum Scattering Communication System

作　　者：陈浩 丁丹 CHEN Hao;DING Dan(Department of Electronic and Optical Engineering,Aerospace Engineering University,Beijing 101416;No.93448 Troops of PLA,Tianjin 300270)

机构地区：[1]航天工程大学电子与光学工程系,北京101416 [2]中国人民解放军93448部队,天津300270

出　　处：《舰船电子工程》2024年第8期72-77,共6页Ship Electronic Engineering

摘　　要：论文结合并行组合扩频技术,选用适合散射传输的并扩参数和体制方式,提出一种自适应并行组合扩频散射通信系统。根据不同散射信噪比环境自适应切换高速率和可靠性两种传输模式;高速率模式下,采用加入序列极性的PCSS解调软判决方法,提升解调解扩准确性,匹配高传输速率要求;可靠性模式下,通过降低传输扩频数量取值和低阶调制的方式使系统较为可靠。与直接扩频系统相比,提高了数据传输速率。与未改进的常用并扩系统相比,有着更低的误码率。Combined with parallel combined spread spectrum technology,this article proposes an adaptive parallel combined spread spectrum scattering communication system by selecting parallel spread parameters and system methods suitable for scattering transmission.Two transmission modes of high rate and reliability are adaptively switched according to different scattering SNR envi-ronments.In the high-rate mode,the PCSS demodulation soft judgment method with sequence polarity is adopted to improve the ac-curacy of demodulation and amplification and match the high transmission rate requirements.In reliability mode,the system is more reliable by reducing the number of spread spectrum values and low-order modulation.Compared with the direct spread spectrum sys-tem,the data transmission rate is improved.It has lower bit error rate compared with unimproved common parallel extension system.

关 键 词：并行组合扩频 散射 数据传输速率 通信系统建模 

分 类 号：TN926[电子电信—通信与信息系统]