The Research And Analyse On Digital Front-end Of Software Radio Reception

Software Radio technology is a whole new wireless communication technology. Because of it, the innovation of receiver technology has begun, after stable to mobile, from analog to digital the software Radio technology is another breakthrough in the wireless communication field. His message is that construction of an open, standardized, modular hardware platform generic, and broadband modules and antennas as close as possible to A/D/A.This essay researches the wireless receiver system to the digital front-end components. First introduced software radio concept and the related trends and the structure of its three forms a certain exposition. These figures remain part of the frequency conversion and filter software is part of the radio group, one of the key technologies, and the use of FPGA design, As programmable devices in the programmable nature of the achievement made more flexible system can be seen from the perspective of hardware software.The papers in the analysis of the figures orthogonal frequency conversion technology basis, More traditional LUT and CORDIC(Coordinate Rotation Digital Computer), analysis of the superiority of the latter; and the use of Verilog programming to Maxplus II software for the simulation environment, conducted in FPGA devices based on the structure of the CORDIC simulation of frequency conversion. To decimators of multi-level system designed based on the HB filter and CIC filter, analysis of the filter design parameters involved, whose theory applied to multi-level CIC filter of design, and designed half band filter with distributed algorithms. compared to the simulation results. These advanced algorithms applications, and further increase hardware efficiency and operating speed.Through this research papers,initial certification within the FPGA software radio receiver front-end figures for the feasibility. And through simulation results of the comparative analysis , demonstrated some hardware systems can enhance the effectiveness of advanced algorithms, for the final realization of efficient software radio system laid the foundation.