DESIGN OF THE ALAMOUTI SCHEME FOR A MIMO RECEIVER AND ITS IMPLEMENTATION ON AN FPGA

Abstract

This paper analyses the Alamouti scheme for different antenna configurations and different modulation types, namely BPSK, QPSK and QAM. All configurations were modeled and simulated in MATLAB. A MIMO receiver for a 21 antenna configuration and BPSK modulation was implemented in a FPGA. The FPGA results indicate that the Alamouti scheme is a good design option for hardware implementation of a MIMO receiver. The receiver uses only about 10% of the resources of a medium-sized FPGA and achieves almost 300 Msymbols per second.

Keywords

• Alamouti
• MIMO Receiver
• FPGA