Analytical Study of the Pulse Shaping and Frequency Allocation for Software Defined Radio

Abstract

The exponential growth in the ways and means by which people need to communicate, modifying radio devices easily and cost effectively has become a potential issue. The hardware based radio device limits cross-functionality and can be modified through physical intervention. This results higher production cost and minimal flexibility in supporting multiple wave standards. newlineIn contrast, software defined radio (SDR) technology provides an efficient and comparatively inexpensive solution to these problems and allowing multimode, multiband and multi-functional wireless device that can be enhanced by using software updates. These devices include field-programmable gate array (FPGA), digital signal processing (DSP), general-purpose preprocessor (GPP), system-on-a-chip (SoC), or other application specific programmable processors with the use of these technologies, which allows new wireless features and capabilities are to be added to the existing radio system without requiring new hardware. By simply downloading a new program, the software radio is able to interoperate with different wireless protocols, incorporate new services and upgrade to new standards. Thus, the SDR is a radio communication system which can tune to any frequency band and receive any modulation across a large frequency spectrum by means of programmable hardware which is controlled by software. This means that the frequency band, performance and functionality can be upgraded with a simple software download and update. It is important to note that SDR is not confused with application software and other software not associated with radio. It provides an efficient and comparatively inexpensive solution to the problem of building multimode, multiband, multifunctional wireless devices.