摘要
本文针对调频差分混沌移相键控FMDCSK数字通信中误比特率问题进行了研究,通过分析相邻两比特间的调制信息与符号函数的关系,提出了一种改进的相关估算解调方法.仿真结果表明,在不降低传输速率的前提下,较以前调频差分混沌移相键控调制方式,误比特率有明显改善.
This paper presents a kind of improved method of correlation estimation demodulation in order to solve the problem of bit error rate of FM-DCSK in digital communication, through analyzing the relation between modulation information and symbol function of two adjacent bits. Simulation results show that the bit error rate is obviously improved in comparison with the former FM-DCSK system under the condition of the same transmission efficiency.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2005年第6期1032-1035,共4页
Acta Electronica Sinica
基金
国家自然科学基金(No.60372007)
教育部博士点基金(No.20040151003)
关键词
调频差分混沌移相键控
混沌调制
相关估算
Bit error rate
Chaos theory
Computer simulation
Demodulation
Electromagnetic wave transmission
Estimation
Frequency modulation
Mathematical models
Phase shift keying
Signal processing
