Understanding Different ADC Parameters used in Software Radio for 3G/4G Mobile Receiver

A software defined radio adopts a fully reconfigurable front end and is believed to be the right answer to realize 3G/4G mobile systems. This paper will give a review of different   ADC architecture used in SDR mobile receiver with different parameter of ADC. In an ideal software radio, the data conversion    process   occurs   immediately   after the antenna in the receiver chain. This paper also presents a multi-standard reconfigurable   modulator, which are able to support the predictable standards of fourth generation of mobile communication systems (4G). The down conversion process is entirely in the digital domain. The proper selection of data converters, both analog to digital converters and digital to analog converters (DACs) is one of the most challenging steps in designing software radio. Different types of ADCs are discussed here.