Design and implementation of a flexible 4×4 MIMO testbed

This paper presents the implementation of a flexible 4times4 MIMO testbed. The subsystems are designed and fabricated in RF section. Then, implementing the baseband section with FPGA and using the flexible MATLAB interfaces, the various performance studies are conducted. To validate the overall system performance, the measurement results are presented. The excellent agreement between the analytical and the measurement results shows the accuracy of the testbed operation.