A new multi function voltage-mode universal biquadratic filter using single Voltage Differencing Differential Input Buffered Amplifier (VD-DIBA), two capacitors and one resistor is proposed. The proposed configuration...A new multi function voltage-mode universal biquadratic filter using single Voltage Differencing Differential Input Buffered Amplifier (VD-DIBA), two capacitors and one resistor is proposed. The proposed configuration has four inputs and one output and can realize all the five standard filters from the same circuit configuration. The presented biquad filter offers low active and passive sensitivities. The validity of proposed universal biquadratic filter has been verified by SPICE simulation using 0.35 μm MIETEC technology.展开更多
无人机(unmanned air vehicle,UAV)可以作为无线通信系统的放大转发(amplify and forward,AF)中继。为提高无人机辅助中继的通信系统性能,本文考虑了一种配备混合精度模数转换器(analog-to-digital converters,ADCs)的全双工(full duple...无人机(unmanned air vehicle,UAV)可以作为无线通信系统的放大转发(amplify and forward,AF)中继。为提高无人机辅助中继的通信系统性能,本文考虑了一种配备混合精度模数转换器(analog-to-digital converters,ADCs)的全双工(full duplex,FD)大规模多输入多输出(multiple-input multiple-output,MIMO)的非正交多址接入(non-orthogonal multiple access,NOMA)传输方案,该方案中无人机在悬停状态下为地面用户提供服务。本文采用了最大比合并/最大比传输(maximum ratio combining/maximum ratio transmission,MRC/MRT)方案,并考虑非完美串行干扰消除(successive interference cancellation,SIC)等非理想条件的影响,以系统的频谱效率(spectral efficiency,SE)和能量效率(energy efficiency,EE)为指标对系统性能进行研究和分析。仿真结果表明,系统的性能与中继天线数、用户发射功率、量化比特数等参数有关,同时也证明了混合精度量化系统的优势。展开更多
文摘A new multi function voltage-mode universal biquadratic filter using single Voltage Differencing Differential Input Buffered Amplifier (VD-DIBA), two capacitors and one resistor is proposed. The proposed configuration has four inputs and one output and can realize all the five standard filters from the same circuit configuration. The presented biquad filter offers low active and passive sensitivities. The validity of proposed universal biquadratic filter has been verified by SPICE simulation using 0.35 μm MIETEC technology.
文摘无人机(unmanned air vehicle,UAV)可以作为无线通信系统的放大转发(amplify and forward,AF)中继。为提高无人机辅助中继的通信系统性能,本文考虑了一种配备混合精度模数转换器(analog-to-digital converters,ADCs)的全双工(full duplex,FD)大规模多输入多输出(multiple-input multiple-output,MIMO)的非正交多址接入(non-orthogonal multiple access,NOMA)传输方案,该方案中无人机在悬停状态下为地面用户提供服务。本文采用了最大比合并/最大比传输(maximum ratio combining/maximum ratio transmission,MRC/MRT)方案,并考虑非完美串行干扰消除(successive interference cancellation,SIC)等非理想条件的影响,以系统的频谱效率(spectral efficiency,SE)和能量效率(energy efficiency,EE)为指标对系统性能进行研究和分析。仿真结果表明,系统的性能与中继天线数、用户发射功率、量化比特数等参数有关,同时也证明了混合精度量化系统的优势。
