Random Articles
Reseach Article
Partial Transmit Sequence used in OFDM to Increase PAPR and Analysis of Phase Sequences and Data Blocks
| International Journal of Computer Applications |
| Foundation of Computer Science (FCS), NY, USA |
| Volume 65 - Number 22 |
| Year of Publication: 2013 |
| Authors: Ajay Kumar Jaiswal, Chandrakant Kshyap, Sunil R Gupta |
10.5120/11215-6263
|
Ajay Kumar Jaiswal, Chandrakant Kshyap, Sunil R Gupta . Partial Transmit Sequence used in OFDM to Increase PAPR and Analysis of Phase Sequences and Data Blocks. International Journal of Computer Applications. 65, 22 ( March 2013), 12-16. DOI=10.5120/11215-6263
Abstract
The high data rate transmission is the today's most demanding parameter hence one of the popular technique used in the communication is OFDM. Partial transmit sequence (PTS) combining can improve the PAR statistics of an OFDM signal. For PTS, the search complexity increases exponentially with the num-ber of subblocks. Here, we present a new algorithm for computing the phase factors that achieves better performance than the exhaustive bi-nary search approach. We also investigate the effects of non-linear am-plifiers on the performance of the new algorithm, including the power spectral density and in-band distortion. In this paper with the help of new algorithm the PAPR reduction with the PTS technique is about 1. 78 dB for 0. 01 % of input symbols. This reduction in PAPR with PTS can be increased by increasing the number of phase sequences and the size of input data block. The simulation results show that PAPR is reduced to 2. 69 dB for 0. 01 % of input symbols for increasing the number of phase sequences from 16 to 36.
References
- C. V. Chong and V. Tarokh, "A Simple Encodable/Decodable OFDM QPSK Code with Low Peak-to-Mean Envelope Power Ration,"IEEE Trans. Info. Theory,vol. 47, no. 7, Nov. 2001, pp. 3025–29.
- J. Tellado, Peak to Average Power Reduction for Multicarrier Modulation, Ph. D. dissertation, Stanford Univ. , 2000.
- B. S. Krongold and D. L. Jones, "PAR Reduction in OFDM via Active Constellation Extension," IEEE Trans. Broadcast. , vol. 49, no. 3, Sept. 2003, pp. 258–68.
- Heung-Gyoon Ryu, Jae-Eun Lee, and Jin-Soo Park, "Dummy sequence insertion (DSI) for PAPR reduction in the OFDM communication system," IEEE Transactions on Consumer Electronics, vol. 50, pp. 89-94, Feb. 2004
- J. Armstrong, "Peak-to-Average Power Reduction for OFDM by Repeated Clipping and Frequency Domain Filtering," Elect. Lett. , vol. 38, no. 8, Feb. 2002, pp. 246–47.
- A. E. Jones, T. A. Wilkinson, and S. K. Barton, "Block Coding Scheme for Reduction of Peak to Mean Envelope Power Ratio of Multicarrier Transmission Scheme," Elect. Lett. , vol. 30, no. 22, Dec. 1994, pp. 2098–99
- Ben Slimane, S. , "Peak-to-average power ratio reduction of OFDM signals using pulse shaping", Proceedings of IEEE Vehicular Technology Conference, USA, September 2002, pp. 889-893.
- Xiuyan, Z. , and Guobin,T. , "The research of improved PTS method for peak-to-average power ratio reduction", Proceedings of IEEE 3rd international conference on wireless, mobile and multimedia networks, Beijing, China, September 2010, pp. 104-107.
- Xinchun Wu, Zhigang Mao, Jinxiang Wang, Bin Zho, " A novel PTS technique with combinative optimization in real part and imaginary part for PAPR reduction in OFDM systems", Proceedings of Third International Conference on Next Generation Mobile Applications, Services and Technologies, Cardiff, Wales, UK, September 2009, pp. 215-218.
- Mukunthan, P. , and Dananjayan, P. , "Modified PTS with interleaving and pulse shaping method for PAPR reduction of OFDM signal with QPSK subcarriers", Proceedings of International Conference on Information and Communication Technology, Chennai, India, 24th December 2011, pp. 65-71.
- Sharif, M. , Gharayi-Alkhansari, M. , and Khalaj, B. H. , "On the peak-to-average power of OFDM signals based on oversampling", IEEE Transactions on Communications, January 2003, pp. 72-78.
- Tellambura, C. , "Improved phase factor computation for the PAP reduction of an OFDM signal using PTS", IEEE Communications Letters, vol. 5, no. 4, April 2001,pp. 135- 137.
- Kang, S. G. , and Kim,J. G. , "A novel subblock partition scheme for partial transmit sequence OFDM", IEEE Transactions on broadcasting, vol. 45, no. 3, September 1999, pp. 333-338. PAPR Reduction of an OFDM Signal using Modified PTS Combined with Interleaving and Pulse Shaping Method 486.
Index Terms
Keywords