超宽带数字正交变换的一种高效实现结构  

A High Effective Architecture for Ultra-Wideband Digital Orthogonal Transform

作　　者：彭小名[1] 张东坡[1] 

机构地区：[1]中国电子科技集团公司第三十六研究所

出　　处：《通信对抗》2006年第3期50-53,共4页Communication Countermeasures

摘　　要：介绍了一种基于频域数字信道化的高速数字正交变换器的设计方法和实现结构。这种结构利用数字正交变换的优化算法，通过合理的滤波器组设计，在满足应用要求的前提下，极大地拓宽了正交变换的有效处理带宽，同时大大地减少了计算量和硬件电路资源的消耗。这种正交变换器不需要高精度的正交数字本振（NCO）。此技术的实现在宽带接收机和实时信号处理等领域具有重要意义。The design of the high speed digital orthogonal transformer which architecture based on the digital channelization in frequency domain is introduced in this paper. By adopting the optimization algorithm of the digital transform and designing the filter banks properly, the proposed digital orthogonal transformer can broaden the effective processing bandwidth extremely while the application requirements is satisfied, however the calculation and hardware source can be reduced significandy. The high precise NCO is not needed in the digital orthogonal transformer. The realization of this transformer is profound for wideband digital receiver and real-time signal processing.

关 键 词：数字正交变换 多相滤波器组 数字信道化 

分 类 号：TN919.65[电子电信—通信与信息系统] TN92[电子电信—信息与通信工程]