摘要
提出一种在数字传输系统中易于实现的发、收滤波器特性的准最佳分配方案:将信道升余弦滚降特性和宽码输入补偿网络特性都以平方根形式均分于发、收两端。分析和计算了这种系统的等效信噪比损失;用计算机优化方法设计了形成滤波器;最后计算了此系统残存符号间干扰所引起的损失。
A suboptimum scheme for easily realizing the decomposed transmitting andreceiving filter characteristics in digital transmission systems is suggested.The x/sinx com-pensation frequency response is decomposed equally to both transmitter and receiver.Thedegradation of error rate performance of the suboptimum system is analyzed and compu-ea Then the shaping filters for this system are designed using computer optimizationmethod,and these filters are of good performance.At last,the degradation of error rateperformance effected by the residual intersymbol interference of this system is computed.
出处
《电子科技大学学报》
EI
CAS
CSCD
北大核心
1990年第5期470-476,共7页
Journal of University of Electronic Science and Technology of China
关键词
数字传输系统
准最佳系统
优化设计
digital transmission system
shaping filter
suboptimum system
optimization design
intersymbol interference
bit error rate
