Object-Oriented Model of SDR Library for WiMAX/UMTS System Baseband Level

Emerging standards in the area of mobile services, such as Worldwide Interoperability for Microwave Access (WiMAX) and Universal Mobile Telecommunication System (UMTS), require new capabilities from mobile devices. As a result, these devices should be aware of how to download and correctly install particular software. For this purpose, the Software Defined Radio (SDR) technology is used at present. SDR allows the co-existence of different independent standards, protocols, and services. This signal processing approach is broadly spreading because of the reprogramming and reconfiguring of mobile devices is of great importance. Due to the availability of SDR in the device architecture, a user can update and replace necessary services without changing the hardware. In this paper the object-oriented framework of model for SDR implementation are presented. The main accent was made on possibility to co-exist two types of standards and to describe it by high-level language software, which allows to simulate the complex systems. The base construction of proposed model was built. Furthermore this model shows that the SDR technique can be acceptable for the co-existence of WiMAX and UMTS structure independently from the physical layer.