Title :
A Low Complexity Scheme for Transmit Diversity Over Frequency Selective Channels
Author :
Xiao, Pei ; Sellathurai, Mathini ; Ratnarajah, Tharm
Author_Institution :
Queen´´s Univ., Belfast
Abstract :
A low complexity transmit diversity scheme is derived in this paper in order to overcome the prohibitive complexity imposed by the maximum likelihood detection for the systems with space-time block code (STBC) over frequency selective channels. By taking advantage of multipath propagation and exploiting temporal diversity gain, the proposed turbo equalization algorithm significantly improves the system performance compared to the original Alamouti algorithm as well as the conventional minimum mean square error (MMSE) detection scheme.
Keywords :
block codes; diversity reception; least mean squares methods; maximum likelihood detection; multipath channels; space-time codes; turbo codes; Alamouti algorithm; frequency selective channel; low complexity transmit diversity scheme; maximum likelihood detection; minimum mean square error detection; multipath propagation; space-time block code; turbo equalization algorithm; Block codes; Convolutional codes; Equalizers; Frequency diversity; Hydrogen; Intersymbol interference; MIMO; Maximum likelihood detection; Receiving antennas; Transmitting antennas;
Conference_Titel :
Global Telecommunications Conference, 2007. GLOBECOM '07. IEEE
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4244-1042-2
Electronic_ISBN :
978-1-4244-1043-9
DOI :
10.1109/GLOCOM.2007.777
