摘要
相比传统DFT接收机,单比特数字接收机由于采用了低比特A/D量化和简化的傅里叶变换过程,具有大带宽、运算速度快等优点。但双信号瞬时动态范围偏小限制了单比特接收机的应用。文中在不增加量化位数的情况下,讨论了运用补偿矩阵来提高双信号动态范围的方法。仿真表明,该方法能有效提高双信号动态范围。
Compared with the traditional DFT receiver,the monobit digital receiver can achieve large wideband and high processing speed by adopting low bit A/D and simplifying the course of Fourier transformation.However,a problem of low two-signal instantaneous dynamic range has occurred for the monobit digital receiver.In this paper,we adopt a compensation technique to improve instantaneous dynamic range without more quantization precision.Simulation results show that this technique can enlarge the dual signal dynamic range.
出处
《电子科技》
2012年第3期17-20,共4页
Electronic Science and Technology
关键词
单比特
补偿矩阵
动态范围
monobit
compensation matrix
dynamic range
