Multi-Standard WIMAX/UMTS System Framework Based on SDR

In this work, we are proposing a novel approach targeted to handling signal processing and data transmission tasks related to a multi-standard terminal encompassing WiMAX and UMTS standards. We shall present an innovative software-defined-radio (SDR)-based framework which will be able to arrange the digital processing tasks concerning the baseband level of the multi-standard transceiver architecture. In particular, an object-oriented model will be proposed for the baseband level implementation. The general structure consists of a number of modules for each specific and/or common component of UMTS and WiMAX signal processing chain. We start to design the SDR architecture model as a software prototype. The framework model was built as C++ class library in order to evaluate how SDR-based implementation works and to assess its quantitative performances. This model allows to consider the process of the packet interaction between transmitter and receiver and, moreover, the inter-packet interaction inside each module of the terminal. After all, the proposed software model will be integrated into the hardware platform and the final tests will be performed.