Inverse QR 2D-RLS Adaptive Channel Estimation for OFDM Systems

Akshay SONI  Tanvi SHARMA  Vijaykumar CHAKKA  

IEICE TRANSACTIONS on Communications   Vol.E93-B   No.10   pp.2822-2825
Publication Date: 2010/10/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E93.B.2822
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies

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This letter proposes Inverse QR two-dimensional Recursive Least Square (IQR-2D-RLS) adaptive channel estimation for Orthogonal Frequency Division Multiplexing (OFDM) systems (using Givens Rotations and Householder Transformations). It is more stable numerically than 2D-RLS algorithm. MATLAB simulations show that BER performance of IQR-2D-RLS algorithm is similar to that of 2D-RLS algorithm.