Title :
Design of a low power Digital Down Converter for 802.16m - 4G WiMAX on FPGA
Author :
Rupanagudi, Sudhir Rao ; Bhat, Varsha G. ; Hemalatha, S.G. ; Bhavana, N. ; Archana, M. ; Chandrika, B.V. ; Ashwini, R. ; Torvi, Keerti G. ; Darshan, S.R. ; Abhilash, B.G. ; Anil, K.S. ; Vinayak, Swamy K. M.
Author_Institution :
WorldServe Educ., Bangalore, India
Abstract :
The Digital Down Converter also known as the DDC is one of the most integral parts of a baseband wireless receiver system. The major function of the DDC is to down convert an Intermediate Frequency (IF) signal to Baseband. It achieves this by performing complex tasks such as mixing, decimation and filtering and it is due to this reason, the architecture of the DDC occupies a significant on-chip area and consumes a large amount of power as well. In this paper, a novel methodology to implement the DDC architecture has been presented. The paper focuses on the 4G WiMAX standard. The DDC has been designed and implemented on a Xilinx Virtex 4 FPGA utilizing a CORDIC based NCO, Vedic math based mixer and a CIC based filter. A 93% reduction in area was achieved and a 3.5 times reduction in power with respect to previous architectures has also been attained.
Keywords :
WiMax; digital arithmetic; field programmable gate arrays; power convertors; 4G WiMAX; 4G WiMAX standard; 802.16m; CIC based filter; CORDIC; DDC architecture; Vedic math based mixer; Xilinx Virtex 4 FPGA; baseband wireless receiver system; intermediate frequency signal; low power digital down converter; Baseband; Computer architecture; Field programmable gate arrays; Finite impulse response filters; Mixers; Receivers; WiMAX; 4G; 5G; 802.16m; CIC Filter; CORDIC algorithm; Cascaded Integrator Comb Filter; DDC; Digital Down Converter; Low power multiplier; NCO; Numerically Controlled Oscillator; Vedic Maths; WiMAX;
Conference_Titel :
Advances in Computing, Communications and Informatics (ICACCI, 2014 International Conference on
Conference_Location :
New Delhi
Print_ISBN :
978-1-4799-3078-4
DOI :
10.1109/ICACCI.2014.6968583