Differential space time block codes using nonconstant modulus constellations
IEEE Transactions on Signal Processing
Space-time block codes from orthogonal designs
IEEE Transactions on Information Theory
Unitary space-time modulation for multiple-antenna communications in Rayleigh flat fading
IEEE Transactions on Information Theory
Differential space-time modulation
IEEE Transactions on Information Theory
Multiple transmit antenna differential detection from generalized orthogonal designs
IEEE Transactions on Information Theory
A simple transmit diversity technique for wireless communications
IEEE Journal on Selected Areas in Communications
Space-time block coding for wireless communications: performance results
IEEE Journal on Selected Areas in Communications
A differential detection scheme for transmit diversity
IEEE Journal on Selected Areas in Communications
Hi-index | 0.00 |
The simple differential designs on both space-time coded OFDM (STC-OFDM) and space-frequency coded OFDM (SFC-OFDM) are introduced when neither the transmitter nor the receiver has the channel state information. In the differential STC-OFDM (DSTC-OFDM) and the differential SFC-OFDM (DSFC-OFDM) systems, the block differential encodings are adopted in the time dimension and the frequency dimension, respectively. We give the detailed description and theoretical analysis of the two schemes. The effectiveness in achieving the transmitter diversity is illustrated by simulations in both slow and fast fading environments. By taking the advantage of the characteristics of the OFDM frame structure, the computational complexity of the introduced schemes is greatly reduced.