Title :
On decision-feedback detection of differential space-time modulation in continuous fading
Author :
Ling, Cong ; Li, Kwok H. ; Kot, Alex C.
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore
Abstract :
We show that linear prediction (LP)-based decision-feedback detection (DFD) for nondiagonal differential space-time modulation (DSTM) may suffer from a severe performance degradation in continuously fading channels. DSTM constellations that incur no degradation in LP-DFD are identified as those with a diagonal generator. To cater to other constellations, we propose a low-complexity DFD scheme by inserting decision-feedback symbols into the metric of multiple-symbol differential detection.
Keywords :
computational complexity; error statistics; fading channels; modulation; prediction theory; radio receivers; signal detection; space-time codes; computational complexity; continuous fading channels; decision-feedback detection; differential space-time modulation; error probability; linear prediction; multiple-symbol differential detection; radio receivers; Constellation diagram; Degradation; Design for disassembly; Differential phase shift keying; Differential quadrature phase shift keying; Fading; Modulation coding; Receiving antennas; Signal design; Transmitting antennas; 211;time modulation; 65; Continuous fading; DFD; DSTM; LP; MSDD; decision-feedback detection; differential space&#; linear prediction; multiple-symbol differential detection;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOMM.2004.836435
