Jyh-Horng Wen1, 2, Gwo-Ruey Lee1 and Cheng-Ying Yang3* 1 The Institute of Electrical Engineering, National Chung Cheng UniversityNo.168, University Rd., Min-Hsiung, Chia-Yi, Taiwan, R.O.C.
2 Department of Electrical Engineering, Tunghai UniversityNo. 181 Section 3, Taichung Harbor Rd., Taichung, Taiwan, R.O.C.
3 Department of Computer Science, Taipei Municipal University of EducationNo.1, Ai-Guo W. Rd., Taipei, Taiwan, R.O.C.
Download Citation:
|
Download PDF
The non-linear distortion caused by high peak-to-average power ratio (PAPR) oftransmitted signal is a major drawback in the OFDM systems. In this paper, the proposed PAPRreduction scheme is to choose the corresponding symbol patterns with a low PAPR in the expandedsignal space. However, the scheme has a high complexity for the selection of symbolpattern with the smallest signal power in a larger expanded signal space. The scheme could berealized as a signal mapping from the original information symbols to the corresponding patterns.With the selection of the corresponded symbol patterns, the PAPR could be greatly reduced. Accordingto the simulation results with the proposed scheme, while the length of the data frame is16 and the signal expansion with adding 1 bit and 2 bits, the PAPR changing rate could be 20percents and 16 percents of the original PAPA, respectively. However, there is no prominent improvementon PAPR reduction with more than 8 bits for using the signal expansion scheme.ABSTRACT
Keywords:
OFDM system; PAPR reduction scheme; Signal mapping scheme.
Share this article with your colleagues
[1] Nee, R. V. and Prasad, R. 2000. “OFDMwireless multimedia communication”,Artech House. lnc. Norwood MA.U.S.A.REFERENCES
[2] Engels, M. 2002. “Wireless OFDM Systems:How to Make Them Work?” KluwerAcademic Publishers, 1st edition.Massachusetts. U.S.A.
[3] Prasad, R. 2004. “OFDM for WirelessCommunications Systems”, ArtechHouse. lnc. Norwood MA. U.S.A.
[4] Zou, W. Y., and Wu, Y. 1995. COFDM:An overview, IEEE Transactions onBroadcasting, 41, 1: 1-8.
[5] Hanzo, L., Webb, W., and Keller T. 2000.“Single- and multi-carrier quadratureamplitude modulation – Principles andapplications for personal communications,WLANs and broadcasting”, JohnWiley & Sons, Ltd, England.
[6] Wang, T., and Ilow J. 2004. Compensationof non-linear distortions with memoryeffects in OFDM transmitters, Proceedingof IEEE Globecom 04, 4:2398-2403.
[7] Li, J., and Ilow, J. 2006. Adaptivevolterra predistorters for compensationof non-linear effects with memory inOFDM transmitters, Proceeding ofCNSR 06: 100-103.
[8] Ochiai, H., and Imai, H. 2000. Performanceof the deliberate clipping withadaptive symbol selection for strictlyband-limited OFDM systems, IEEEJournal on Selected Areas in Communications,18, 11: 2270-2277.
[9] Ryu, H. G., Hoa, T. P., Hieu, T. H., andJin, J. 2004. BER analysis of clippingprocess in the forward link of theOFDM-FDMA communication system,IEEE Transactions on Consumer Electronics,50, 4,: 1058-1064.
[10] Richard D. J. Van Nee, 1996. OFDMcodes for peak-to-average power reductionand error correction, Proceeding ofIEEE Globecom 96: 740-744.
[11] Müller S. H., and Huber J. B. 1997. Acomparison of peak power reductionschemes for OFDM, Proceeding of IEEEGlobecom 97: 1-5.
[12] Breiling, M., Müller-Weinfurtner S., andHuber J. 2001. SLM peak-power reductionwithout explicit side information,IEEE Communications Letters, 5, 6:239-241.
[13] Müller S. H., and Huber J. B. 1997.OFDM with reduced peak- to-averagepower ratio by optimum combination ofpartial transmit sequences, IEE ElectronicsLetters, 33, 5: 368-369.
[14] Ryu H. G., and Youn K. J. 2002. A newPAPR reduction scheme: SPW (subblockphase weighting), IEEE Transactions onConsumer Electronics, 48, 1: 81-89.
[15] Ochiai H., and Imai H. 2001. On the distributionof the peak-to-average powerratio in OFDM signals, IEEE Transactionson Communications, 49, 2: 282-289.
[16] Abramowitz M., and Stegun, I. A. 1972.“Handbook of Mathematical Functionswith Formulas, Graphs, and MathematicalTables”, Dover Publications, Inc.New York, U.S.A.
ARTICLE INFORMATION
Accepted:
2007-07-30
Available Online:
2007-07-01
Wen, J.-H., Lee, G.-R., Yang, C.-Y. 2007. The PAPR reduction in OFDM system with the help of Sig-nal mapping scheme. International Journal of Applied Science and Engineering, 5, 75–80. https://doi.org/10.6703/IJASE.2007.5(1).75
Cite this article:
