Performance Analysis of Pilot Based Channel Estimation in OFDM System using Recursive Least Square Estimator
Journal Title: International Journal of Research in Computer and Communication Technology - Year 2016, Vol 5, Issue 5
Abstract
For a wireless communication system, the channel is unknown a priori to the receiver. Channel parameter estimation is used for improving data transmission performance. To estimate the channel properties and correct the received signal pilot based approaches are widely used. The previous works consider Least Square (LS) and Minimum Mean Square Error (MMSE) channel estimators. Here, pilot based Channel Estimation (CE) employing Recursive Least Square (RLS) estimator is proposed. Two types of pilot based estimation methods are block-type pilot arrangement and comb-type pilot arrangement. Interpolation techniques are used in comb type pilot to infer the channel frequency values of non-pilot subcarriers. Mean Square Error (MSE) Vs Signal to Noise Ratio (SNR) is the parameter used for estimation. MATLAB is used for the simulation of the system model.
Authors and Affiliations
Siyana Shukkoor, Dhanya. G
Keywords
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