Performance of the differential-encoding transmit diversity with frequency offset of the carrier recovery

Recently, a new differential detection scheme for transmit diversity was proposed by Tarokh and Jafarkhani, which can achieve full diversity without the requirement to estimate the channel state at the receiver. In this paper, we investigate the effect of the carrier frequency offset on the performance of the transmit diversity with differential encoding scheme and present some results on its maximal tolerable frequency offsets for different MPSK signals. The results have shown that the differential encoding transmit diversity is very robust to the frequency offset and is very feasible in practice.