Block-Orthogonal Frequency Division Multiplexing in Multi-Path Fading Channel
| Autor: | Ryohei Kimura, Akiyoshi Monma, Mitsuru Uesugi, Jinsong Duan |
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| Rok vydání: | 2006 |
| Předmět: |
Orthogonal frequency-division multiplexing
Computer science ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS Real-time computing Data_CODINGANDINFORMATIONTHEORY Interference (wave propagation) Computer Science Applications Transmission (telecommunications) Electronic engineering Overhead (computing) Fading Electrical and Electronic Engineering Symbol rate Diversity scheme Block (data storage) |
| Zdroj: | Wireless Personal Communications. 38:27-42 |
| ISSN: | 1572-834X 0929-6212 |
| DOI: | 10.1007/s11277-006-9026-9 |
| Popis: | Orthogonal frequency division multiplexing (OFDM) is robust against multi-path interference due to using a lot of low symbol rate sub-carriers. In order to mitigate the degradation due to multi-path interference, guard time interval (GI) is inserted into each OFDM symbol. However, redundant allocation to GI leads to loss of effective transmission power. We propose the Block-OFDM which can reduce the GI overhead ratio per frame compared with conventional OFDM. In Block-OFDM system frequency domain equalization (FDE) is carried out in order to remove multi-path interference. We evaluated Block-OFDM performance in a frequency selective fading channel and compared with that of conventional OFDM. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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