Title :
Differential modulation using space-time block codes
Author :
Ganesan, Girish ; Stoica, Petre
Author_Institution :
Dept. of Syst. & Control, Inf. Technol., Uppsala Univ., Sweden
Abstract :
We consider a space-time differential modulation scheme where neither the transmitter nor the receiver has to know the channel. Our scheme is based on the theory of unitary space-time block codes. Compared to the existing differential modulation schemes for multiple antennas our scheme has a much smaller computational complexity. Moreover, our codes have a higher coding gain and lower bit error rate than the codes proposed by other researchers.
Keywords :
Rayleigh channels; block codes; diversity reception; error statistics; modulation; transmitting antennas; BER; bit error rate; coding gain; computational complexity; decoder; differential modulation; flat Rayleigh fading; multiple antennas; nonselective Rayleigh fading; transmitter diversity; unitary space-time block codes; Bit error rate; Block codes; Computational complexity; Modulation coding; Random variables; Rayleigh channels; Receiving antennas; Transmitters; Transmitting antennas; Wireless communication;
Journal_Title :
Signal Processing Letters, IEEE
