MIMO-OFDM Channel Estimation Using Pilot Carries
Kala Praveen Bagadi,Susmita Das +1 more
TLDR
Channel state information for both single-input single-output (SISO) and MIMO systems based on pilot aided arrangement is investigated and MMSE estimation has been shown to perform much better than LS but is more complex than LS for the MIMo system using pilot carriers.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.read more
Citations
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Proceedings ArticleDOI
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References
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Ezio Biglieri,Robert Calderbank,Anthony G. Constantinides,Andrea Goldsmith,Arogyaswami Paulraj,H. Vincent Poor +5 more
TL;DR: In this article, a detailed introduction to the analysis and design of multiple-input multiple-output (MIMO) wireless systems is presented, and the fundamental capacity limits of MIMO systems are examined.
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Pilot-based channel estimation for OFDM systems by tracking the delay-subspace
TL;DR: The presented techniques are based on the observation that the wireless radio channel can be parametrized as a combination of paths, each characterized by a delay and a complex amplitude, which shows fast temporal variations due to the mobility of terminals while the delays are almost constant over a large number of OFDM symbols.
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