INFormation ThEoretic Comparison of MIMO Systems: Single Carrier versus OFDM: INFOTEC (Under Submission)


ビジョン

 The major goal of this project is to provide fair performance comparison and efficiency assessments between single carrier- and orthogonal frequency division multiplexing (OFDM)-based multiple-input multiple-output (MIMO) systems by using the information theoretic performance metrics. Frequency domain soft cancellation minimum mean squared error (FD-SC-MMSE) turbo equalization is assumed for the both cases. To verify the transmission chain optimality, we use extrinsic information transfer (EXIT) analysis where the design parameters include modulation schemes, code parameters (polynomials, rate, constraint length, etc). Since performance tendencies are largely affected by the MIMO channel properties and antenna setup, we use channel impulse response data collected in real fields through multi-dimensional channel sounding measurement campaign, to be conducted under the cooperation framework between JAIST and Ilmenau University of Technology, Germany.
 This research objective is indeed aggressive, and requires a lot of theoretical works. Therefore, we set the primary goal of this project at making fair comparison between two well known signaling schemes, SCFDE and OFDM, where account is taken of the convergence property analysis of the turbo loops for MIMO signal detection. This project aims to evaluate performances of MU-MIMO in the both uplink and downlinks, where the MAC rate region theorem and Dirty Paper Coding (DPC) theorem provide the theoretical limits, respectively.