3 / 2018-11-22 11:31:22

A Simple and Low Cost Land-Mobile-Radio Design for Interoperability Among Radio Networks in a Public Safety Scenario

multiband radio, land mobile radio,,public safety communication, spectrum management

Interoperability amongst various radio networks
is one of the core objectives of software defined radios. To
address this core concept for public safety, future radio networks
would benefit, only if those would be dynamically adaptable
and reconfigurable in order to ensure interoperability. These
radios are supposed to be multi-band, multi-standard across wide
radio frequency spectrum and also be compatible with legacy
transceivers systems. In this paper we propose a land-mobileradio
design as a simple and low cost solution for this key issue
of interoperability in a public safety scenario. Our proposed
radio design is capable to receive and simultaneously downconvert
and digitize desired channels from the bands allocated
by Federal Communications Commission, USA, for public safety
radio. Based on direct RF bandpass sampling, our design requires
a low speed ADC upto 10 Msps, having wide input bandwidth
of 800 MHz and hence gives assurance in reduction of system
cost, complexity without any compromise on fast detection and
processing of radio channels.