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http://dx.doi.org/10.3745/KIPSTC.2005.12C.4.511

PAPR Reduction Improvement for WHT-based OFDM System using Data Grouping Technique  

Kong Hyung-Yun (울산대학교 전기전자정보시스템공학부)
Khuong Ho Van (울산대학교 전기전자정보시스템공학부)
Nam Doo-Hee (울산대학교 전기전자정보시스템공학부)
Publication Information
The KIPS Transactions:PartC / v.12C, no.4, 2005 , pp. 511-518 More about this Journal
Abstract
The conventional OFDM (Orthogonal Frequency Division Multiplexing) modulation can be combined with WHT (Walsh-Hadamard Transform) to reduce PAPR (Peak-to-Average Power Ratio) and improve BER (Bit Error Rate) performance. However, this WHT-based OFDM system still suffers a relatively high PAPR. Therefore, we suggest a new technique, called DGT (Data Grouping Technique) and design an OFDM system employing it and WHT to further decrease PAPR without the BER performance degradation. h salient property of DGT is the independence of the side information which is inherently a principal drawback of the well-known PAPR reduction techniques for OFDM system as well as WHT-based OFDM. The simulation programs have been also performed to verify the validity of the proposed system.
Keywords
OFDM; WH Transform; DGT; PAPR;
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1 D.N. Kalofonos, M. Stajanovic, J.G. Proakis, 'On the performance of Adaptive MMSE Detectors for a MC-CDMA System in Fast Fading Rayleigh Channels', The ninth IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, Vol.3, pp.1309-1313, 8-11 Sept., 1998   DOI
2 John G. Proakis, 'Digital communications', Fourth Edition, McGraw-Hill, 2001
3 Zhongding Lei, Yan Wu, Chin Keong Ho, Sumei Sun, Ping He, Yuan Li, 'Iterative detection for Walsh-Hadamard transformed OFDM', VTC 2003-Spring, Vol.1, pp.637-640, 22-25 April, 2003   DOI
4 C. Tellambura, 'Computation of the Continuous-Time PAR of an OFDM Signal with BPSK Subcarriers', IEEE Communications Letters, Vol.5, pp.185-187, May, 2001   DOI   ScienceOn
5 James K. Cavers, 'Mobile Channel Characteristics', Kluwer Academic Publishers, 2000
6 Richard van Nee, Ramjee Prasad, 'OFDM for Wireless Multimedia Communications', Artech House, 2000
7 H. Ochiai, H. Imai, 'OFDM-CDMA with peak power reduction based on the spreading sequences', ICC 98, Vol.3, pp.1299-1303, 7-11 June, 1998   DOI
8 Z. Dlugaszewski, K. Wesolowski, 'WHT/OFDM - an improved OFDM transmission method for selective fading channels', SCVT-2000, pp.144-149, 19 Oct., 2000   DOI
9 B.M. Popovic, 'Spreading sequences for multicarrier CDMA systems', IEEE Trans. Commun., Vol.47, Issue 6, pp.918-926, June, 1999   DOI   ScienceOn
10 Yan Wu, Chin Keong Ho, Sumei Sun, On some properties of Walsh-Hadamard transformed OFDM', VTC 2002-Fall, Vol.4, 24-28 Sept., 2002. pp.2096-2100   DOI