Title :
Differential STBC MIMO-OFDM System with Cyclic Delay Diversity for Mobile Multimedia Communication Systems
Author :
Kim, Yoon Hyun ; Kim, Jin Young
Author_Institution :
Dept. of Wireless Commun. Eng., Kwangwoon Univ., Seoul
Abstract :
In a conventional MIMO-OFDM system, it is well known that cyclic delay diversity (CDD) and space-time block coding (STBC) can increase data rate, capacity and bit error rate (BER) performance. However, a recent trend of research on the MIMO-OFDM system pays more attention to simplified implementation of receiver structure. In this paper, we propose differential STBC MIMO-OFDM system with CDD. This structure can provide a very close performance to that of the conventional diversity scheme with maximum likelihood (ML) detection without channel estimation block while the receiver structure is highly simplified. BER (bit error rate) performance of the proposed system is simulated for an AWGN channel by theoretical and simulated approaches. The results of this paper can be applicable to the 4G mobile multimedia communication systems.
Keywords :
4G mobile communication; AWGN channels; MIMO communication; OFDM modulation; block codes; channel coding; channel estimation; diversity reception; error statistics; maximum likelihood detection; mobile radio; modulation coding; multimedia communication; space-time codes; 4G mobile multimedia communication systems; AWGN channel; BER; bit error rate; channel estimation block; cyclic delay diversity; differential STBC MIMO-OFDM system; maximum likelihood detection; mobile multimedia communication systems; receiver structure; space-time block coding; AWGN channels; Bit error rate; Block codes; Channel estimation; Communication systems; Delay systems; Maximum likelihood detection; Maximum likelihood estimation; Multimedia communication; Multimedia systems;
Conference_Titel :
Advanced Communication Technology, The 9th International Conference on
Conference_Location :
Gangwon-Do
Print_ISBN :
978-89-5519-131-8
DOI :
10.1109/ICACT.2007.358689
