ABBA-VBLAST Hybrid Space-Time Code for MIMO Wireless Communications

Download Now Free registration required

Executive Summary

Hybrid MIMO communication systems combine spatial multiplexing with diversity gain to achieve both high spectral efficiency and link reliability. The authors present a novel hybrid scheme that allows the use of any number of spatial multiplexing layers, plus one quasi-orthogonal layer (ABBA) of either 3 or 4 antennas. They transform the system equations in terms of linear dispersion codes, from which they derive a low-complexity, ordered, successive interference cancellation receiver based on sorted QR decomposition. Symbol detection is carried out in a unified manner, both for spatial and space-time coded symbols. They show that this novel scheme outperforms other recent proposals in terms of bit error rate, even those using CSI at the transmitter to pre-code.

  • Format: PDF
  • Size: 710.1 KB