Constellations rotation for quasi-orthogonal space time polarization block code in keyhole channel

A new kind of constellation rotation for quasi-orthogonal space time polarization block code in keyhole channel is introduced in this paper. This kind of space time block code of 4 and 8 transmit antennas are designed, the new codes with full diversity can transmitted through dual-polarized antennas and received through dual-polarized antennas. Last the new codes is compared with the traditional quasi-orthogonal space-time block code in keyhole channel. Simulation result show that the new code can increase bit error rate compared with the constellation rotation for quasi-orthogonal space-time polarization block code in keyhole channel, and can reduce bit error rate compared with the traditional quasi-orthogonal space-time block code in keyhole channel.