Peak to Average Power Ratio Reduction in Single Carrier OFDMA Systems | ||||
The International Conference on Electrical Engineering | ||||
Article 50, Volume 7, 7th International Conference on Electrical Engineering ICEENG 2010, May 2010, Page 1-15 PDF (439.51 K) | ||||
Document Type: Original Article | ||||
DOI: 10.21608/iceeng.2010.33011 | ||||
View on SCiNiTO | ||||
Authors | ||||
Mohamed Salah1; Gamal Abdel-Fadeel2; Zaki B. Nossair3 | ||||
1Teach. Assist., MTI University. | ||||
2Prof. Dr., Helwan University. | ||||
3Associate Prof. Dr., Helwan University. | ||||
Abstract | ||||
Abstract: Single carrier frequency division multiple access (SC-FDMA) which utilizes single carrier modulation at the transmitter and frequency domain equalization at the receiver is a technique that has similar performance and essentially the same overall structure as those of an OFDMA system. One prominent advantage over OFDMA is that the SCFDMA signal has lower peak-to-average power ratio ( PAPR ). SC-FDMA has drawn great attention as an attractive alternative to OFDMA, especially in the uplink communications where lower PAPR greatly benefits the mobile terminal in terms of the transmit power efficiency. SC-FDMA is currently a working assumption for the uplink multiple access scheme in 3GPP Long Term Evolution (LTE). To achieve low PAPR , a novel scheme, SC-OFDMA with super frame using intermediate mapping (SF-IFDMA), is proposed in this paper. In our proposed scheme, B frames with N subcarriers will be combined into one super frame, then SC-OFDM technique is applied to reduce the PAPR of the super frame, the super frame with lowered PAPR will finally be divided into B OFDM frames for the transmission. The combining and dividing process is equivalent to the concatenation process. The proposed scheme requires no side information and can significantly reduce PAPR while maintaining small number of subcarriers. | ||||
Keywords | ||||
Single carrier OFDMA with intermediate mapping (IFDMA); IFDMA with super frame (SF-IFDMA); peak to average power ratio ( PAPR ) | ||||
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