PAPR Reduction in DFT- Spread OFDMA using Companding Transform |
Author(s): |
| Minal Jain , U.V.P.C.E.,Ganpat Vidyanagar, Mehsana, Gujarat-384001, India |
Keywords: |
| OFDM, PAPR, DFTS-OFDM, TPWC, LTE. |
Abstract |
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Orthogonal Frequency Division Multiplexing (OFDM) is an efficient transmission technique for high data rate communication systems. The major problem of OFDM system is Peak to Average Power Ratio (PAPR) which reduces the efficiency of the system and increases the system complexity. In this paper, the two different techniques are combined together, so as to give the effective reduction in PAPR for OFDM, namely, DFT spreading and Two Piece-wise Companding (TPWC). DFT spread OFDM (DFTS-OFDM) has been selected as the uplink transmission scheme for long-term 3G evolution (LTE) and TPWC transform can provide significant PAPR reduction with low computational complexity, which is similar to other existing linear transforms. TPWC is proposed so as to compress large signal amplitudes and expand small ones with two different linear functions. |
Other Details |
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Paper ID: IJSRDV1I10004 Published in: Volume : 1, Issue : 10 Publication Date: 01/01/2014 Page(s): 2061-2064 |
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