Diversity vs. adaptivity in multiple antenna systems

R. Bohnke, V. Kahn, K.-D. Kammeyer
IEEE 6th Workshop on Signal Processing Advances in Wireless Communications, 2005.  
An information theoretic analysis of multiple antenna systems shows that the possible gain due to transmitter-sided channel knowledge is usually small for uncorrelated fading. However, it is not obvious how these results translate to real-world transmission strategies. Thus, in this paper the error performance of adaptive bit and power loading with perfect channel state information is compared to that of high-rate multistratum space-time codes relying only on transmit diversity. We demonstrate
more » ... hat the latter may even outperform the adaptive scheme if discrete rate constraints are taken into account.
doi:10.1109/spawc.2005.1506068 fatcat:sdxl4dkt6rg2rabru5u6zucj6e