A New Study of Channel Estimation Methods for OFDM in DVB-T2
Keywords:
Digital Video Broadcasting System for Terrestrial Second Generation (DVB-T2), DomainTransform Least Square Estimation (DTLSE), Two Dimensional Linear Interpolation (2-DLI), Minimum Mean Square Estimation (MMSE).Abstract
In this paper three proposed methods of channel estimation are introduced. These methods are based on pilot-aided OFDM system with the arrangement employed in the DVB-T2 standard in time-varying frequency-selective fading channels. The first and second methods (low complexity and improved low complexity methods, respectively) are modified methods based on Domain Transform Least Square Estimation (DTLSE) method; which reduce the computational complexity by avoiding the use of the matrix inversion. The estimation matrix size for obtaining Channel Impulse Response (CIR) depends only on the length of the channel rather than the number of pilot sub-carriers or the size of OFDM symbols. The third method (high performance method), which is based on the first proposed method and a Two Dimensional Linear Interpolation 2-DIL method, uses one frame instead of one symbol and offers lesser complexity than the MMSE method, and a BER performance close to it.
References
R. Prasad, 2004. OFDM for Wireless Communications Systems, Singapore, Artech House
Yong Soo Cho, Jaekwon Kim, Won Young Yang, Chung-GuKang,
DVB Document A133, February, 2012. Implementation guidelines for a second generation Digital terrestrial television broadcasting system (DVB-T2).
Sinem Coleri, Mustafa Ergen, Anuj Puri, and Ahmad Bahai,
Zijun Zhao and Xiang Cheng, Miaowen Wen and Bingli Jiao, Cheng-Xiang Wang "Channel Estimation Schemes for IEEE 802.11p Standard" IEEE Intelligent transportation systems magazine, Vol.5, Issue. 4, pp. 38-49, Oct. 2013.
Yulin Wang, Gengxin Zhang, Zhidong Xie, and Jing Hu "Channel Estimation in DCT-Based OFDM
M. Speth, S. Fechtel, G. Fock, and H. Meyr,
M. Z. Saleh, M. Sadek and S. El Ramly,
J. Lin,
Mingchao Yu and Parastoo Sadeghi,'' Study of Pilot-Assisted OFDM Channel Estimation Methods with Improvements for DVB-T2,'' IEEE Trans. Vehicular Technology, June 2012, Vol. 61, No. 5.
O. Edfors, M. Sandell, J.-J. Van de Beek, S. Wilson, and P. Borjesson,
D. C. Chang,
J. Park, J. Kim, M. Park, K. Ko, C. Kang, and D. Hong,
Y.S. Lee, H.N. Kim, S. I. Park, and S. I. Lee,
P. C. Hansen, Rank-Deficient and Discrete Ill-Posed Problems. Philadelphia, PA: SIAM, 1998.
Ahmed H. Eldieb, Mona Z. Saleh and Salwa Elramly," A Comparative Study of Channel Estimation Techniques for OFDM in DVB-T2," IJCA (0975
Meng-Han Hsieh, Che-Ho Wei, "Channel Estimation For OFDM Systems Based On Comb-Type Pilot Arrangement In Frequency Selective Fading Channels", IEEE Transactions on Consumer Electronics, Feb 1998, Vol. 44 , No. 1, pp. 217-225.
Ahmed H. Eldieb, Mona Z. Saleh and Salwa Elramly," An Improved Technique of Channel Estimation for OFDM in DVB-T2," IJCA (0975
T. H. Cormen, C. E. Leiserson, R. L. Rivest, and C. Stein, Introduction to Algorithms. Cambridge, MA: MIT Press, 2001.
DVB Document A133 Implementation guidelines for a second generation digital terrestrial television broadcasting system (DVB-T2), Jun. 2010.
J. G. Proakis, Digital Communications. Singapore: McGraw-Hill, 1995.
Mackenzie, ABERT, SET,
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