A Novel Design of Reconfigurable Architecture for Multistandard Communication System

The goal of future mobile communication systems will be to incorporate and integrate different wireless access technologies and mobile network architectures in a complementary manner so as to achieve a seamless wireless access infrastructure. To support this seamless user mobility across different wireless access technologies it is needed to design reconfigurable multistandard receiver architecture. This paper presents the system-level design of a wireless receiver’s baseband architecture, which supports two wireless access technologies: Wideband Code Division Multiple Access (WCDMA) and Orthogonal Frequency Division Multiplexing (OFDM). In this paper, efficient method of Fast Fourier Transform (FFT) algorithm for OFDM standard and Rake Receiver design for WCDMA standard were implemented. This architecture efficiently shares the resources needed for these two standards while reconfiguring. The proposed architecture is simulated using ModelSimSE v6.5 and mapped onto a Spartan 3E FPGA device (3s5000epq208) using the tool Xilinx ISE 9.2. Simulation results show that the proposed architecture can be efficiently reconfigured in run-time and proved as area efficient.