Balanced Space-Time Block Code Selection with Four and Five Bits Feedback for Four Transmit Antennas

In this paper, balanced space-time block code selection schemes with four and five feedback bits are proposed for wireless communication systems using four transmit antennas, by increasing the number of transmission matrices. It is shown by computer simulations that the diversity gain is further increased by these new schemes compared to those given in (M. E. Celebi et al., 2007).