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| Titel: |
New Results with Blind Time Domain Equalization for OFDM System |
| Auteur: |
S. Elahmar A. Djebbari M. Bouziani J.M. Rouvaen |
| Verschenen in: |
Information technology journal |
| Paginering: | Jaargang 6 (2007) nr. 2 pagina's 207-211 |
| Jaar: |
2007 |
| Inhoud: |
The 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 (FSTEQ`s) 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 TEQ`s 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. |
| Uitgever: |
Asian Network for Scientific Information, Pakistan (provided by DOAJ) |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 48 van 56 gevonden artikelen
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