Performance Comparison of coded MIMO-OFDM with novel Diversity Technique for Mobile Communication Systems

Author

Kim, Yoon Hyun ; Kim, Jin Young

Author_Institution

Dept. of Radio Sci. & Eng., Kwangwoon Univ., Seoul

Volume

2

fYear

2008

fDate

17-20 Feb. 2008

Firstpage

1218

Lastpage

1222

Abstract

A recent trend of research on the MIMO-OFDM system pays more attention to reduce complexity for implementation in design receiver structure. So in this paper, we propose differential space time block codes (STBC) MIMO-OFDM system with cyclic delay diversity (CDD) in a frequency selective fading channel. Differential modulation provides simplification of embodiment communication system because channel estimation block is not necessary. And also we apply proposed scheme to convolutional turbo codes (CTC) for playing an important part in MIMO-OFDM system as inner codes. 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 performance of the proposed system is analyzed and 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

AWGN channels; MIMO communication; OFDM modulation; block codes; diversity reception; fading channels; maximum likelihood detection; mobile communication; space-time codes; turbo codes; 4G mobile multimedia communication systems; AWGN channel; BER performance; CDD; CTC; ML; STBC; additive white Gaussian noise channels; bit error rate; channel estimation; coded multiple input multiple output-OFDM; convolutional turbo codes; cyclic delay diversity; differential modulation; differential space time block codes; diversity technique; frequency selective fading channel; maximum likelihood detection; mobile communication systems; orthogonal frequency division multiplexing; Analytical models; Block codes; Channel estimation; Communication systems; Delay effects; Delay systems; Frequency diversity; Maximum likelihood detection; Maximum likelihood estimation; Mobile communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Advanced Communication Technology, 2008. ICACT 2008. 10th International Conference on

Conference_Location

Gangwon-Do

ISSN

1738-9445

Print_ISBN

978-89-5519-136-3

Type

conf

DOI

10.1109/ICACT.2008.4493984

Filename

4493984