Packet combining and MMSE-based turbo equalization for the MIMO-ISI channel : performance-complexity trade-off
Résumé
This paper presents a new family of packet combiners with integrated minimum mean square error (MMSE)-based turbo equalization for coded transmission over the multiple input mul- tiple output (MIMO)-intersymbol interference (ISI) channel. The basic concept behind this technique consists on creating at each transmission an additional set of virtual receive antennas, which translates into an increase in the diversity order. The paper also focuses on a second combining family where different transmissions are separately equalized. Block error rate (BLER) performance is evaluated via Monte Carlo simulations for different system configurations to investigate the performance to complexity trade- off for the two algorithms. I. INTRODUCTION