Information Technology Journal1812-56381812-5646Asian Network for Scientific Information10.3923/itj.2007.207.211ElahmarS. DjebbariA. BouzianiM. RouvaenJ.M. 2200762The Multicarrier Equalization by Restoration of RedundancY (MERRY) algorithm has been shown to blindly and adaptively shorten a channel to the length of the guard interval in an OFDM system. Most published works on blind Time Domain Equalization (TEQ) convergence analysis are confined to Ts-spaced equalizers. The common belief is that analysis of fractionally-spaced TEQ (FSTEQs) is a straightforward extension with similar results. This belief is, in fact, untrue. In this study, we present a convergence analysis of MERRY fractionally-spaced TEQs that proves the important advantages provided by the FSTEQ structure. We show that the FSTEQ MERRY algorithm converges significantly faster than the non-fractional TEQ MERRY algorithm. The main reason is that a fractionally-spaced blind adaptive TEQ admits infinitely many realizations of perfect channel shortening for a specific delay whereas a non-fractionally-spaced TEQ admits only one realization. Computer simulation demonstrates the performance improvement provided by the blind adaptive fractionally-spaced TEQ using MERRY algorithm for OFDM system.]]>Al-Dhahir, N. and J.M. Cioffi,1996445664Arslan, G., B.L. Evans and S. Kiaei,20014931233135Chen, Y. and C. Nikias,19921992pp: 221225Chow, J.S., J.M. Cioffi and J.A.C. Ingham,19932761765Farhang-Boroujeny, B. and M. Ding,200149554562Gitlin, R.D. and S.B. Weinstein,198160275296Martin, R.K., J. Balakrishnan, W.A. Sethares and C.R. Johnson, Jr.,20022002pp: 372376Martin, R.K., J.M. Walch and C.R. Johnson,20055313241334Melsa, P.J.W., R.C. Younce and C.E. Rohrs,19964416621672Vaidyanathan, P.P. and B. Vrcelj,20022002pp: 12771280Wang, Z. and G.B. Giannakis,2000172948Ye, L. and Z. Ding,199644818826