Frequency-Domain Equalization Incorporated with Frequency-Domain Redundancy for OFDM Systems
| Autor: | Akihiro Shibuya, Takayuki Nagayasu, Katsuyuki Motoyoshi, Hiroshi Kubo, M. Higashinaka, Akihiro Okazaki |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Minimum mean square error
Computational complexity theory Computer science Orthogonal frequency-division multiplexing Applied Mathematics Equalization (audio) Equalizer Frequency domain equalization Computer Graphics and Computer-Aided Design Intersymbol interference Control theory Frequency domain Signal Processing Guard interval Redundancy (engineering) Forward error correction Electrical and Electronic Engineering |
| Zdroj: | PIMRC |
| DOI: | 10.1109/pimrc.2006.254430 |
| Popis: | This paper proposes a frequency-domain equalizer (FEQ) which utilizes not only guard interval but also redundancy in the frequency domain to eliminate inter-symbol and inter-carrier interferences. The proposed FEQ employs the hybrid criterion, i.e., the zero-forcing (ZF) criterion for compensating desired subcarriers and the minimum mean square error (MMSE) criterion for suppressing interference. The proposed Hybrid-FEQ achieves a good equalization performance, because it can suppress the noise enhancement caused by the ZF criterion with relatively small computational complexity exploiting soft-decision forward error correction (FEC). In this paper, we show its equalization performance and complexity compared with the conventional FEQs. |
| Databáze: | OpenAIRE |
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