A Mapped Mc-OFDM Cooperative Communications System to Reduce PAPR and Improve Data Reliability
| Autor: | Yun-Kyeong Hwang, Hyung-Yun Kong |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
business.industry
Orthogonal frequency-division multiplexing Computer science ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS Data_CODINGANDINFORMATIONTHEORY Communications system Antenna diversity Frequency-division multiplexing Modulation Electronic engineering Wireless Fading business Data transmission |
| Zdroj: | The Journal of Korean Institute of Electromagnetic Engineering and Science. 18:1254-1261 |
| ISSN: | 1226-3133 |
| Popis: | Mc-OFDM(Multi code-Orthogonal Frequency Division Multiplexing) modulation has been developed for high-speed data transmission over wireless channels. However, this system suffers critical problem from relatively high PAPR(Peak to Average Power Ratio). To reduce PAPR, we suggest a new technique, called Mapping using (N+1)PSK and demonstrate the performance of mapped Mc-OFDM system. On the other side, in OFDM system, each sub-carrier experiences different fading, thus some sub-carriers may be completely lost because of deep fade. To solve a above mention problem, we propose cooperative communications that improve the reliability of sub-carriers through spatial diversity. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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