A Multi-Resolution Fast Filter Bank for Spectrum Sensing in Military Radio Receivers
A Multi-Resolution Fast Filter Bank for Spectrum Sensing in Military Radio Receivers
复制标题
DOI：
10.1109/tvlsi.2011.2151214
复制
发表时间：
2012-07
影响因子：
2.8
通讯作者：
K. G. Smitha;A. P. Vinod
中科院分区：
文献类型：
--
作者：
K. G. Smitha;A. P. Vinod
本文提出了一种基于快速滤波器组设计的多分辨率滤波器组（MRFB），用于军用无线电接收机的多分辨率频谱感知。该方法克服了传统离散傅里叶变换滤波器组（DFTFB）频谱传感器传感分辨率固定的限制。通过合理设计原型滤波器，高效地选择不同分辨率的子带，无需重新硬件实现，实现了多感测分辨率光谱传感器的灵活性。设计实例表明，所提出的MRFB的传感性能与传统的固定分辨率DFTFB相当。复杂度比较表明，与DFTFB相比，MRFB架构的门数减少了36.5%。所提出的MRFB架构比DFTFB平均功耗降低20.8%。
In this paper, we propose a multi-resolution filter bank (MRFB)-based on the fast filter bank design for multiple resolution spectrum sensing in military radio receivers. The proposed method overcomes the constraint of fixed sensing resolution in spectrum sensors based on conventional discrete Fourier transform filter banks (DFTFB). The flexibility in realizing multiple sensing resolution spectrum sensor is achieved by suitably designing the prototype filter and efficiently selecting the varying resolution subbands without hardware re-implementation. Design examples show that the sensing performance of proposed MRFB is comparable to that of conventional fixed resolution DFTFB. The complexity comparison shows that the proposed MRFB architecture has a gate count reduction of 36.5% over the DFTFB. The proposed MRFB architecture achieves an average power reduction of 20.8% over DFTFB.