Title :
Differential space-time modulation
Author :
Hughes, Brian L.
Author_Institution :
Dept. of Electr. & Comput. Eng., North Carolina State Univ., Raleigh, NC, USA
Abstract :
We consider the design of space-time modulation techniques that do not require channel estimates at the transmitter or receiver. We propose a general approach to differential modulation for multiple transmit antennas based on group codes. This approach can be applied to any number of transmit antennas and any signal constellation. We also derive low-complexity differential receivers, error bounds, and modulator design criteria, which we use to design optimal modulators for two transmit antennas
Keywords :
antenna arrays; block codes; differential phase shift keying; group codes; modulators; radio receivers; receiving antennas; transmitting antennas; DPSK; differential space-time modulation; error bounds; group codes; low-complexity differential receivers; modulator design criteria; multipath radio channels; multiple transmit antennas; optimal modulators; receiving antenna arrays; signal constellation; space-time block codes; transmit antenna array; Block codes; Channel estimation; Differential quadrature phase shift keying; Fading; Frequency shift keying; Modulation coding; Radio transmitters; Receiving antennas; Statistics; Transmitting antennas;
Conference_Titel :
Wireless Communications and Networking Conference, 1999. WCNC. 1999 IEEE
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-5668-3
DOI :
10.1109/WCNC.1999.797803
