Title :
Joint Quasi-Orthogonal SFBC and Spatial Multiplexing in OFDM-MIMO Systems
Author :
Rahman, Muhammad Imadur ; Marchetti, Nicola ; De Carvalho, Elisabeth ; Prasad, Ramjee
Author_Institution :
Center for TelelnFrastruktur (CTiF), Aalborg Univ., Aalborg
Abstract :
In this work, we have combined quasi-orthogonal space-frequency block code (QSFBC) and spatial multiplexing (SM) in one joint diversity and multiplexing (JDM) structure. Minimum mean square error (MMSE) and zero forcing (ZF) nulling based ordered successive interference cancellation (OSIC) receivers are derived for above mentioned JDM scheme. Performance comparison is done in realistic wireless scenario. It is observed through simulations that our JDM scheme performs very well in presence of spatial correlation caused by antenna separation and by line of sight (LOS) situation. The gains in frame error rate (FER) and outage spectral efficiency for JDM schemes with studied receivers are very high compared to corresponding SM only schemes.
Keywords :
MIMO communication; OFDM modulation; block codes; correlation methods; diversity reception; error statistics; interference suppression; least mean squares methods; multiplexing; orthogonal codes; radio receivers; JDM scheme; MMSE; OFDM-MIMO system; OSIC receiver; antenna separation; frame error rate; joint diversity and multiplexing structure; line-of-sight situation; minimum mean square error; ordered successive interference cancellation; outage spectral efficiency; quasi-orthogonal space-frequency block code; spatial correlation; spatial multiplexing; zero forcing nulling; Block codes; Error analysis; Interference cancellation; MIMO; Mean square error methods; Quadrature amplitude modulation; Receiving antennas; Samarium; Signal to noise ratio; Transmitters;
Conference_Titel :
Vehicular Technology Conference, 2006. VTC-2006 Fall. 2006 IEEE 64th
Conference_Location :
Montreal, Que.
Print_ISBN :
1-4244-0062-7
Electronic_ISBN :
1-4244-0063-5
DOI :
10.1109/VTCF.2006.284
