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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2008.4
- 수록면
- 426 - 433 (8page)
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초록· 키워드
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In this paper, we present a method to improve the performance of the four transmit antenna quasi-orthogonal space-time block code (STBC) in the coded system. For the four transmit antenna case, the quasi-orthogonal STBC consists of two symbol groups which are orthogonal to each other, but intra group symbols are not. In uncoded system with the matched filter detection, constellation rotation can improve the performance. However, in coded systems, its gain is absorbed by the coding gain especially for lower rate code. We propose an iterative decoding method to improve the performance of quasi-orthogonal codes in coded systems. With conventional quasi-orthogonal STBC detection, the joint ML detection can be improved by iterative processing between the demapper and the decoder. Simulation results shows that the performance improvement is about 2㏈ at 1% frame error rate.
목차
ABSTRACT
Ⅰ. Introduction
Ⅱ. System Model
Ⅲ. Detection of the Quasi-Orthogonal STBC
Ⅳ. Quasi-Orthogonal Code with Iterative Decoding
Ⅴ. Simulation Results
Ⅵ. Conclusion
참고문헌
참고문헌 (13)
참고문헌 신청
X. Li , 2002 , Bit-Interleaved Coded Modulation with Iterative Decoding and 8-PSK Signaling , IEEE Transactions on Communications 50 : 1250 ~ 1257
J. Hagenauer , 1988 , Rate-Compatible Punctured Convolutional Codes (RCPC Codes) and their Applications , IEEE Transactions on Communications 4 : 389 ~ 400
I. Lee , 2003 , Space-Time Bit-Interleaved coded Modulation for OFDM Systems in Wireless Lan Applications , Proc. ICC'03 5 : 3413 ~ 3417
G. Foschini , 1995 , On Limits of Wireless Communication in a Fading Environment when using Multiple Antennas , AT&T Bell Laboratories Tech. Memo
X. Zhuang , 2003 , Transmit Diversity and Spatial Multiplexing in Four-Transmit-Antenna OFDM , Proc. IEEE ICC'03 4 : 2316 ~ 2320
J. Hagenauer , 1988 , Rate-Compatible Punctured Convolutional Codes (RCPC Codes) and their Applications , IEEE Transactions on Communications 4 : 389 ~ 400
I. Lee , 2003 , Space-Time Bit-Interleaved coded Modulation for OFDM Systems in Wireless Lan Applications , Proc. ICC'03 5 : 3413 ~ 3417
G. Foschini , 1995 , On Limits of Wireless Communication in a Fading Environment when using Multiple Antennas , AT&T Bell Laboratories Tech. Memo
X. Zhuang , 2003 , Transmit Diversity and Spatial Multiplexing in Four-Transmit-Antenna OFDM , Proc. IEEE ICC'03 4 : 2316 ~ 2320
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