Performance Analysis of Different Estimators for Channel Estimation in OFDM Systems

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Provided by: International Journal of Electrical, Electronics and Computer Engineering (IJEECE)
Topic: Mobility
Format: PDF
In this paper, the authors address channel estimation based on the Minimum Mean Square Error (MMSE) and Least Square (LS) criteria and also consider time-domain channel statistics. It presents an optimal criterion for the pilots, and corresponding optimal designs enabling complexity reductions. Using a general model for a slowly fading channel, the MMSE and LS estimators and a method for modifications compromising between complexity and performance is presented. The symbol error rate for a 16-QAM system is estimated by means of simulation results.
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