摘要
为了提高短波跳频系统数据传输的实时性和可靠性,提出了一种将比特交织编码调制(BICM)与正交频分复用(OFDM)相结合以获得编码增益的BICM-OFDM/FH系统,进行理论分析,并采用Matlab进行数值仿真.仿真结果表明:在比特误码率为1.0×10-5条件下,BICM技术可有效地改善短波多径衰落信道的性能,使编码增益达到5dB;若辅以子载波快速跳频技术可获得10dB的编码增益.
In order to improve the real-time performance and reliability of data transmission of short-wave frequency-hopping system,a BICM-OFDM/FH system is proposed based on the combination of bit interleaved encoding modulation（BICM）and orthogonal frequency division multiplexing（OFDM）to acquire coding gain.Relevant theories analyzed and numerical simulation tests performed by using Matlab illustrate that the BICM can improve the performance of shortwave multipath fading channels,whose coding gain is up to 5dB;and its coding gain is up to 10 dB under the condition of bit error rate of 1.0×10^-5 with the assistance of sub-carrier FFH technology.
作者
甘海慧
熊俊俏
陈爱杰
曹新莉
GAN Haihui XIONG Junqiao CHEN Aijie CAO Xinli(Wuhan Fiber Home Networks Company Limited, Wuhan Research Institute of Posts and Telecommunication, Wuhan 430074, Hubei, China School of Electrical and Information Engineering, Wuhan Institute of Technology, Wuhan 430205, Hubei, China)
出处
《武汉大学学报（理学版）》
CAS
CSCD
北大核心
2016年第6期547-551,共5页
Journal of Wuhan University:Natural Science Edition
基金
国家自然科学基金(61072041)
湖北省自然科学基金(2014CK524)
武汉工程大学科研基金(K201421)资助项目
关键词
正交频分复用(OFDM)
比特交织编码调制(BICM)
跳频
短波信道
orthogonal frequency division multiplexing（OFDM）
bit interleaved coding modulation（BICM）
frequency-hopping
the short-wave channel
