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Volume : III, Issue : IV, May - 2013 CHANNEL ESTIMATION FOR MIMO OFDM USING PILOT CARRIER DHAVAL M. PATEL AND MITESH PATEL Published By : Laxmi Book Publication Abstract : A multiple-input multiple-output (MIMO) communication system combined with the
orthogonal frequency division multiplexing (OFDM) modulation technique can achieve reliable
high data rate transmission over broadband wireless channels. Channel state information for both
single-input single-output (SISO) and MIMO systems based on pilot aided arrangement is
investigated in this paper. The estimation of channel at pilot frequencies with conventional Least
Square (LS) and Minimum Mean Square (MMSE) estimation algorithms is carried out through
Matlab simulation. The performance of MIMO OFDM and SISO OFDM are evaluated on the
basis of Bit Error Rate (BER) and Mean Square Error (MSE) level. Further enhancement of
performance can be achieved through maximum diversity Space Time Block Coding (STBC)
and Maximum Likelihood Detection at transmission and reception ends respectively. MMSE
estimation has been shown to perform much better than LS but is more complex than LS for the
MIMO system using pilot carriers. Keywords : Article : Cite This Article : DHAVAL M. PATEL AND MITESH PATEL, (2013). CHANNEL ESTIMATION FOR MIMO OFDM USING PILOT CARRIER. Indian Streams Research Journal, Vol. III, Issue. IV, http://oldisrj.lbp.world/UploadedData/2349.pdf References : - Ramjee Prasad, “OFDM for Wireless Communications Systems”, Artech House, Inc. Publications.
- Ezio Biglieri, Robert Calderbank, Robert Calderbank, Anthony Constantinides, Andrea Goldsmith, Arogyaswami Paulraj, H. Vincent Poor, “MIMO Wireless Communications”, Cambridge Press.
- A. Petropulu, R. Zhang, and R. Lin, “Blind OFDM channel estimation through simple linear pre-coding", IEEE Transactions on Wireless Communications, vol. 3, no.2, March 2004, pp. 647-655.
- Osvaldo Simeone, Yeheskel Bar-Ness, Umberto Spagnolini, “Pilot-Based Channel Estimation for OFDM Systems by Tracking the Delay-Subspace”, IEEE Transactions on Wireless Communications, Vol. 3, No. 1, January 2004.
- D. Mavares Terán, Rafael P. Torres, “ Space-time code selection for OFDM-MISO system”, ELSEVIER journal on Computer Communications, Vol. 32, Issue 3, 25 February 2009, Pages 477-481.
- Siavash M. Alamouti, “A Simple Transmit diversity Technique for Wireless Communi- cations”, IEEE Journal on Select Areas in Communications, Vol. 16, No. 8, October 1998.
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