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A Study on Design of a Low Complexity TCM Decoder Combined with Space-Time Block Codes  

박철현 (연세대학교 전기전자공학과 정보통신용 SoC설계 연구실)
정윤호 (연세대학교 전기전자공학과 정보통신용 SoC설계 연구실)
이서구 (연세대학교 전기전자공학과 정보통신용 SoC설계 연구실)
김근회 (연세대학교 전기전자공학과 정보통신용 SoC설계 연구실)
김재석 (연세대학교 전기전자공학과 정보통신용 SoC설계 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.29, no.3A, 2004 , pp. 324-330 More about this Journal
Abstract
In this paper, we propose the TCM(Trellis coded modulation) decoding scheme that reduces the number of operations in branch metric with STBC(space time block codes) channel information and present the implementation results. The proposed TCM decoding scheme needs only 1 signal point in each TCM subset. Using bias point scheme, It detects the minimum distance symbol. The proposed TCM decoding scheme can reduce the branch metric calculations. In case of 16QAM 8 subset, the reduction ratio is about 50％ and for 64QAM 8 subset, about 80％ reduction can be obtained. The results of logic synthesis for the TCM and STBC decoder with the proposed scheme are 57.6K gate count.
Keywords
STBC; TCM; OFDM; Wireless LAN;
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  • Reference
1 OFDM wireless LANs : A Theoretical and Practical Guide /
[ Juha Heiskala;john Terry ] / Ph.D
2 Space-time block coding for wireless communications : performance results /
[ Tarokh,V.;Jafarkhani,H.;Calderbank,A.R. ] / IEEE Journal on Selected Areas in Communications   DOI
3 A computationally efficient algorithm for space-time block coding /
[ Enver Cavus;Babak Daneshrad ] / International Conference on Communication, ICC'01
4 Space-time block codes versus space-time trellis codes /
[ Sandhu,S.;Heath,R.;Paulraj,A. ] / Communications, ICC 2001. IEEE International Conference on
5 Channel coding with Multievel/Phase Signals /
[ Ungerbeock,G. ] / IEEE Transactions on Information theory
6 On limits of wireless communication in a fading environment hen using multiple antennas /
[ G.J.Foschini,Jr.;M.J.Gans ] / wireless personal communication
7 A simple transmit diversity technique for wireless communications /
[ Alamouti,S.M. ] / IEEE Journal on Selected Areas in Communications   DOI
8 Space-time codes for high data rate wireless communication: performance criterion and code construction /
[ Tarokh,V.;Seshardri,N.;Calderbank,A.R. ] / Information Theory, IEEE Transactions on   DOI
9 시공간 블록 부호가 결합된 TCM 디코더의 복잡도 감소 방안 /
[ 박철현;정윤호;김근희;이정혁;김재석 ] / 한국통신학회 하계종합학술대회