Title :
Noncoherent receivers for differential space-time modulation
Author :
Schober, Robert ; Lampe, Lutz H J
Author_Institution :
Dept. of Electr. & Comput. Eng., Toronto Univ., Ont., Canada
fDate :
5/1/2002 12:00:00 AM
Abstract :
In this paper, noncoherent receivers for differential space-time modulation (DSTM) are investigated. It is shown that the performance of the previously proposed conventional differential detection (DD) receiver is satisfactory only for very slow flat fading channels. However, conventional DD suffers from a considerable loss in performance even for moderately fast fading, especially if more than one transmit antenna is used. In order to overcome this problem, two improved noncoherent receivers are considered. The first one is the multiple-symbol detection (MSD) receiver. Because of the high computational complexity of MSD, also a low-complexity decision-feedback differential detection (DF-DD) receiver is derived. Analytical and simulation results confirm that both receivers perform equally well and can take full advantage of the enhanced diversity provided by multiple transmit antennas even for fast fading
Keywords :
Rayleigh channels; computational complexity; differential detection; diversity reception; feedback; modulation; radio receivers; transmitting antennas; Rayleigh fading; computational complexity; differential detection receiver; differential space-time modulation; diversity; low-complexity decision-feedback differential detection; multiple transmit antennas; multiple-symbol detection receiver; noncoherent receivers; simulation results; Analytical models; Channel estimation; Computational complexity; Computational modeling; Fading; Performance analysis; Performance loss; Propagation losses; Receiving antennas; Transmitting antennas;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOMM.2002.1006558
