作　　者： (郭凯丰）; (刁鸣）;

机构地区： 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： 《无线电通信技术》 2017年第5期62-66,共5页

摘　　要： 短波通信由于具有技术成熟、成本低、功耗低及通信范围广等特点,因此被广泛应用。短波通信以电离层作为传输介质,其多径效应会产生码间串扰(Inter-Symbol Interference,ISI)现象,限制了无线传输的速度及质量。为了提高系统可靠性,可采用Turbo均衡技术对接收信号进行处理,该技术利用Turbo编译码思想,结合信道均衡与译码处理,通过迭代以达到消除ISI的目的,因其具有良好的性能,得到了广泛的应用。在介绍数字化短波数传通信系统方案的基础上,对Turbo均衡在短波数传体系的应用进行了重点研究,并完成了整个信号处理流程的设计及仿真,验证了其抑制ISI的功能。 Short-wave communication is widely used in military, business and other fields, due to its advantages of mature technol-ogy, low cost and power consumption and long communication distance. However, the performance of short-wave communieationsystems is seriously influenced by inter-symbol interference （ISI） caused by the reflection of ionosphere such as muhipath effect. Thesephenomena restrict the capacity of the channel and the speed of data transmission through wireless. To improve system reliability, Turboequalization is used to process the received signals. With the idea of Turbo codes, Turbo equalization combines equalization withdecoding to mitigate ISI through an iterative approach. This solution is widely used due to its outstanding performanee. The mainpurpose of this paper is to introduce the short-wave digital communication systmn, and mainly studies the application of Turboequalization in short wave digital system. The design and simulation of the whole process of signal processing are completed, anti the ISIsuppression function is verified.

关 键 词： 短波通信 均衡 算法 码间串扰