A new post-coding approach for PAPR reduction in DC-biased optical OFDM systems

Abstract

The high peak-to-average power ratio (PAPR) is one of the main drawbacks in orthogonal frequency division multiplexing (OFDM) communication systems, which also exists in the optical OFDM (O-OFDM) systems. In this letter, a new approach based on the discrete Hartley transform (DHT) post-coding technique is proposed to reduce PAPR of an O-OFDM signal in visible light communication systems. The proposed method is compared with Walsh-Hadamard transform (WHT) and discrete cosine transform (DCT) techniques in terms of PAPR reduction and bit error rate (BER) performance. Experimental results indicate that the proposed DHT post-coding method remarkably reduces the PAPR of an OFDM signal for optical intensity modulated direct detection systems without any corruption in the BER performance.

References

[1] ArmstrongJ. Journal of Lightwave Technology, 2009, 27: 189

[2] Abdulkafi A. A., Mohamad Y. A., Yaseein S. H., Nazaruddin O. and Mohd K. B. S., KSII Transactions on Internet & Information Systems 12, (2018).

[3] ChenL, FangY, WangM. Journal of Computational Information Systems, 2012, 8: 2733

[4] HuWW. Electronics Letters, 2017, 54: 144

[5] YuanJG, ShenQ, WangJX, WangY, LinJZ, PangY. Optoelectronics Letters, 2017, 13: 138

[6] YuanJG, LiZC, MaJ, WangY, LinJZ, PangY. Optoelectronics Letters, 2015, 11: 375

[7] YuanJG, LiZC, MaJ, WangY, LinJZ, PangY. Optoelectronics Letters, 2015, 11: 375

[8] LiuYH, TongZR, CaoY, ZhangWH, LiL. Optoelectronics Letters, 2014, 10: 277

[9] LiuJF, LiN, LuJ, ZengX L J, WangMJ. Optoelectronics Letters, 2013, 9: 57

[10] SlimaneSB. IEEE Transactions on Vehicular Technology, 2007, 56: 686

[11] WangZP, XiaoJN, LiF, ChenL. Optoelectronics Letters, 2011, 7: 363

[12] ChenFN, WangZP. Optoelectronics Letters, 2014, 10: 295

[13] WangZP, ZhangSZ. Optoelectronics Letters, 2013, 9: 213

[14] HajomerAA, YangX, HuW. IEEE Photonics Journal, 2018, 10: 1