Title :
π/4-shifted differential QPSK space-time block codes
Author :
Tarasak, P. ; Bhargava, V.K.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Victoria, BC, Canada
Abstract :
A new power efficient modulation scheme for two transmit antennas is introduced. It is an extension of π/4-DQPSK used in single antenna systems. It achieves full diversity advantage and is suitable for nonlinear amplifiers due to its inherit π/4-phase shift in every symbol interval for both antennas.
Keywords :
block codes; differential phase shift keying; diversity reception; quadrature phase shift keying; space-time codes; transmitting antennas; π/4-shifted differential QPSK space-time block code; modulation method; nonlinear amplifier; power efficiency; spatial diversity; transmit antenna;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20030863
