Optimized ARM-based implementation of DAB Time and Frequency Synchronization

Abstract

Optimized ARM-based implementation of DAB Time and Frequency Synchronization All digital communication systems require proper synchronization for decoding of the received signal in order to obtain the original information transmitted. In Digital Audio Broadcasting (DAB), Synchronization plays an important role by locating each frame precisely. Digital Audio Broadcasting system explores the Null symbol and the phase reference symbol for synchronization purpose. Software Defined Radio-DAB is a system where components that have been traditionally implemented in hardware (example: Filters, modulators/ demodulators) are implemented by means of software on a computer or embedded system. Traditional hardware based radio devices can only be modified through physical invention. This results in higher production costs and minimal flexibility in supporting multiple waveforms standards. Whereas Software Defined Radio technology provides an efficient and comparatively inexpensive solution allowing multiple mode, multi-band and multi-functional wireless devices that can be enhanced using software upgrades. However, a pure software solution (Software Defined Radio) consumes more memory than a hardware solution. Existing techniques are still challenging in optimizing the memory requirement for Software Defined Radio to achieve overall cost effectiveness and flexibility. This work aims to produce an efficient algorithm for reducing the memory requirement for SDR DAB.