Guaranteed Performance Region in Fading Orthogonal Space-Time Coded Broadcast Channels

Eduard A. Jorswieck, Bjorn Ottersten, Aydin Sezgin, Arogyaswami Paulraj
2007 2007 IEEE International Symposium on Information Theory  
Recently, the capacity region of the MIMO broadcast channel (BC) was completely characterized and duality between MIMO multiple access channel (MAC) and MIMO BC with perfect channel state information (CSI) at transmitter and receiver was established. In this work, we propose a MIMO BC approach in which only information about the channel norm is available at the base and hence no joint beamforming and dirty paper precoding (DPC) can be applied. However, a certain set of individual performances
more » ... terms of MSE or zero-outage rates can be guaranteed at any time by applying an orthogonal space-time block code (OSTBC). The guaranteed MSE region without superposition coding is characterized in closed form and the impact of diversity, fading statistics, and number of transmit antennas and receive antennas is analyzed. Finally, six CSI and precoding scenarios with different levels of CSI and precoding are compared numerically in terms of their guaranteed MSE region. Depending on the longterm SNR, superposition coding as well as successive interference cancellation (SIC) with norm feedback performs better than linear precoding with perfect CSI.
doi:10.1109/isit.2007.4557210 dblp:conf/isit/JorswieckOSP07 fatcat:zvah2i6eezdedfoa3v6nd4srey