摘要
在讨论了一种无混迭无盲区的宽带数字信道化接收机设计方法的基础上,针对偶型排列宽带数字信道化接收机频带两端输出的两个实数信道不能直接用于信号检测的问题。提出了采用希尔伯特(Hilbert)正交变换的方法将两个实数信道变为复数解析信号,改进信道化接收机的结构,保证实数信道与其它复数信道一样进行信号检测和估计,解决了宽带信道化接收机频带两端的频谱利用问题,提高了宽带数字接收机的频谱覆盖宽度。通过仿真实验,验证了提出的算法的有效性。
The wide-band digital channelized receiver characterized by anti-aliasing and with no blind-zone is discussed in this paper.In order to solve the problem that the two real channels of two end-zone spectrum for wide-band digital channelized receiver based on even-arrangement cannot be directly employed for signal detection,Hilbert transformation is adopted to transform the two real channels into two plural channels.All channels,including real channels transformed by Hilbert and plural channels,are processed by signal detection and estimation.So two end-zone spectrum utilization problem is solved and spectrum bandwidth coverage is expanded for wide-band digital channelized receiver.The simulation experiments show that the proposed algorithm is feasible and effective.
出处
《通信技术》
2011年第5期42-43,174,共3页
Communications Technology
基金
973国家安全重大基础研究基金资助课题(批准号:61393010101-1)
关键词
宽带数字接收机
信道化
多相滤波
正交变换
无混迭无盲区频带划分
信道判决
wide-band digital receiver
channelization
polyphase filter
orthogonal transformation
anti-aliasing and no blind-zone frequency division
channel decision
