Title :
C42. PAPR reduction for LFDMA using a reduced complexity PTS scheme
Author :
Sayed-Ahmed, Abdelsalam ; Shokair, Mona ; El-Rabaie, El-Sayed
Author_Institution :
Fac. of Electron. Eng., Menoufia Univ., Menouf, Egypt
Abstract :
Three subcarrier mapping schemes are used for single carrier frequency division multiple access (SC-FDMA) system: interleaved (IFDMA), distributed (DFDMA) and localized (LFDMA) subcarrier mapping. Comparison between these schemes showed that the peak to average power ratio (PAPR) for both IFDMA and DFDMA systems is less than that of LFDMA system. In this paper, a low complexity Partial Transmit Sequence (PTS) technique is proposed for the reduction of PAPR in LFDMA system by generating the candidates using the time domain cyclical shift of each sub-block sequence and combining them in a recursive manner. This enables the detector to recover the original signal without needing side information. In this paper, mathematical analysis is explained in details for both the conventional PTS (C-PTS) scheme and the proposed PTS (P-PTS) scheme. Also, computational complexity comparison is performed between the C-PTS and P-PTS schemes.
Keywords :
computational complexity; frequency division multiple access; mathematical analysis; C-PTS scheme; LFDMA; P-PTS scheme; PAPR reduction; SC-FDMA system; complexity PTS reduction scheme; computational complexity; conventional PTS scheme; distributed DFDMA; distributed frequency division multiple access system; interleaved IFDMA; interleaved frequency division multiple access system; localized LFDMA subcarrier mapping; localized frequency division multiple access system; low complexity partial transmit sequence technique; mathematical analysis; proposed PTS scheme; single carrier frequency division multiple access system; subblock sequence; Computational complexity; Educational institutions; Partial transmit sequences; Peak to average power ratio; Radio transmitters; Receivers; LFDMA; LTE; PAPR; PTS; SC-FDMA; computational complexity; side information (SI);
Conference_Titel :
Radio Science Conference (NRSC), 2012 29th National
Conference_Location :
Cairo
Print_ISBN :
978-1-4673-1884-6
DOI :
10.1109/NRSC.2012.6208560
