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Block Coding Techniques with Cyclic Delay Diversity for OFDM Systems
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  • Block Coding Techniques with Cyclic Delay Diversity for OFDM Systems
  • Block Coding Techniques with Cyclic Delay Diversity for OFDM Systems
저자명
두정,회빙,장경희,Du. Ting,Hui. Bing,Chang. Kyung-Hi
간행물명
한국통신학회논문지. The journal of Korea Information and Communications Society. 무선통신
권/호정보
2008년|33권 |pp.867-873 (7 pages)
발행정보
한국통신학회
파일정보
정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

Cyclic delay diversity (CDD) is considered as a simple approach to exploit the frequency diversity in OFDM system. In this paper, we apply CDD to the conventional STBC/SFBC/STFBC-OFDM transmit diversity schemes for Rayleigh fading channels. We compare the performances of STBC/SFBC/STFBC with and without CDD schemes. Simulation results show that the combination of block coding with CDD works well when using the ITU-R M. 1225 channel for both Pedestrian A (Ped A) channel with the mobility of 3 km/h, and Vehicular A (Veh A) channel with the mobility of 120km/h. For a BER of $10^{-3}$, compared to the conventional block coding schemes, a gain of 2dB, 4dB, and 5dB is obtained under the Ped A channel environment by STBC-OFDM, SFBC-OFDM and STFBC-OFDM with CDD, respectively Under the Veh A channel. gains by the combined schemes are 6dB, 2dB, and 4dB, respectivcly.