[2] [2] RAFAEL A,AYARDE M,BRIONES G C. Design and implementation in FPGA of a CIC interpolation filter for software defined radio[C]// 2017 XVII Workshop on Information Processing and Control(RPIC). Mar del Plata,Argentina:IEEE, 2017:1-5. doi:10.23919/RPIC.2017.8214372.

[4] [4] THOMAS S A, ANUSUDHA K. Comparative analysis for various parametric attributes for an optimized DUC/DDC[C]// 2017 International Conference on Inventive Computing and Informatics(ICICI). Coimbatore,India:IEEE, 2017:206-209. doi:10.1109/ICICI.2017.8365339.

[6] [6] JYOTHI N,JAYAPRAKASH S,GOWDA S K. Design and VLSI implementation of high performance DUC and DDC for software defined radio applications[C]// 2013 International Conference on Emerging Trends in Communication,Control,Signal Processing and Computing Applications(C2SPCA). Bangalore,India:IEEE, 2013:1-3. doi:10.1109/C2SPCA.2013.6749375.

[9] [9] THIEL B T, OZMERTA, GUAN Junqing, et al. Lowpass delta-sigma modulator with digital upconversion for switching-mode power amplifiers[C]// 2011 IEEE MTT-S International Microwave Symposium. Baltimore, MD, USA: IEEE, 2011: 1-4. doi:10.1109/MWSYM.2011.5972816.

[10] [10] SILVA N V, OLIVEIRA A S R, CARVALHO N B. Design and optimization of flexible and coding efficient all-digital RF transmitters[J]. IEEE Transactions on Microwave Theory and Techniques, 2013, 61(1): 625-632. doi: 10.1109/TMTT. 2012. 2228669.

[12] [12] DE-FIGUEIREDO F A P,FILHO J A B,LENZI K G. FPGA design and implementation of digital up-converter using quadrature oscillator[C]// 2013 IEEE Jordan Conference on Applied Electrical Engineering and Computing Technologies(AEECT). Amman,Jordan:IEEE, 2013:1-7. doi:10.1109/AEECT.2013.6716423.