Underwater Acoustic Multimedia Communication Based on MIMO–OFDM
| Autor: | Kao-Hung Chang, Chin-Feng Lin, Wei-Hua Chen, Ivan A. Parinov, Shun-Hsyung Chang, Jenny Chih-Yu Lee, Wen-Chin Wu, Chia-Chang Lee |
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| Rok vydání: | 2012 |
| Předmět: |
Block code
Audio signal Multimedia Computer science Orthogonal frequency-division multiplexing MIMO Link adaptation Data_CODINGANDINFORMATIONTHEORY MIMO-OFDM computer.software_genre Multiplexing Computer Science Applications Transmission (telecommunications) Modulation Electrical and Electronic Engineering computer |
| Zdroj: | Wireless Personal Communications. 71:1231-1245 |
| ISSN: | 1572-834X 0929-6212 |
| DOI: | 10.1007/s11277-012-0871-4 |
| Popis: | A transmission scheme is proposed based on multi-input multi-output orthogonal frequency-division multiplexing (OFDM) for underwater acoustic multimedia (UWAM) communication. The proposed scheme integrates direct mapping and space-time block code strategies, a power assignment mechanism, OFDM, adaptive modulation, and unequal error protection in a UWAM system. The proposed UWAM system employs high power, low speed modulation, with schemes providing significant error protection for transmission of sensor data messages requiring a stringent bit-error rate (BER). In contrast, low power, high speed modulation schemes with reduced error protection are provided for messages that can tolerate a high BER, such as image and audio signals. Simulation results show that the proposed scheme not only fulfils the quality of services requirements of a UWAM system, but also maximizes transmission bit rates or minimizes transmission power requirements. |
| Databáze: | OpenAIRE |
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