Space-time-frequency block code for OFDM systems : design and performance analysis = OFDM시스템을 위한 새로운 시간-공간-주파수 블록 코드 design and performance analysis

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In this paper, I propose a novel orthogonal space-time-frequency block code for orthogonal frequency division multiplexing (STFBCOFDM) systems using Alamouti scheme with two transmit antennas. In the proposed code, Alamouti code is applied over two successive OFDM symbols and neighboring subcarriers simultaneously with a scaling factor in order to enhance the system performance over time varying or frequency selective fading channel. The performance of the proposed system is also analyzed in spatially uncorrelated time-varying multipath Rayleigh-fading channels. The analytic results involve a single finite-range integral, which can be easily computed numerically. The analytic results, which closely matches the numerical results, show that the proposed system outperforms STBC-OFDM in time-varying channels and SFBC-OFDM in frequency-selective fading channels.
Advisors
Kang, Joon-Hyukresearcher강준혁researcher
Description
한국정보통신대학교 : 공학부,
Publisher
한국정보통신대학교
Issue Date
2008
Identifier
392932/225023 / 020064583
Language
eng
Description

학위논문(석사) - 한국정보통신대학교 : 공학부, 2008.2, [ viii, 35 p. ]

Keywords

performance analysis; OFDM; STC; space-time-code; fading environments; 알라모티; 페이딩 환경; 성능 분석; 직교주파수분할; 시공간코드; alamouti

URI
http://hdl.handle.net/10203/54961
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=392932&flag=dissertation
Appears in Collection
School of Engineering-Theses_Master(공학부 석사논문)
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