Title :
An FPGA-based time-domain frequency shifter with application to LTE and LTE-A systems
Author :
Figueiredo, Felipe A.P. ; Mathilde, Fabiano S. ; Figueiredo, Fabricio L. ; Cardoso, Fabbryccio A.C.M.
Author_Institution :
Centre for Research and Development in Telecommunications (CPqD), Campinas/SP, Brazil
Abstract :
This paper presents the hardware architecture and the corresponding implementation details of a configurable and optimized FPGA-based time-domain frequency shifter with application to Long Term Evolution (LTE) and Long Term Evolution-Advanced (LTE-A) systems. The architecture is mainly based on a customized Numerically Controlled Oscillator (NCO) that is used for generating complex exponentials employing only adders, a Look-Up Table (LUT) and plain logic resources.
Keywords :
Clocks; Field programmable gate arrays; Indexes; Long Term Evolution; Table lookup; Time-domain analysis; Time-frequency analysis; FPGA; LTE; LTE-A; NCO; PRACH; time-domain frequency shift;
Conference_Titel :
Circuits & Systems (LASCAS), 2015 IEEE 6th Latin American Symposium on
Conference_Location :
Montevideo, Uruguay
DOI :
10.1109/LASCAS.2015.7250408
