Recovery of Image through Alamouti Channel with Incorporation of RSA Algorithm
| Autor: | Md. Imdadul Islam, Aninda Majumder, Mohammad Raihan Ruhin, Tahsina Hashem |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Wireless local loop
Computer science Real-time computing 020206 networking & telecommunications 020302 automobile design & engineering Data_CODINGANDINFORMATIONTHEORY 02 engineering and technology Full Rate symbols.namesake Additive white Gaussian noise 0203 mechanical engineering 0202 electrical engineering electronic engineering information engineering Bit error rate symbols Fading Forward error correction Error detection and correction Algorithm Communication channel |
| Zdroj: | Journal of Computer and Communications. :1-10 |
| ISSN: | 2327-5227 2327-5219 |
| DOI: | 10.4236/jcc.2016.42001 |
| Popis: | In many applications, it is necessary to transmit images at a remote station, where wired Internet service is not available. In this case, wireless local loop (WLL) can help in making wireless link between one end node of the internet and remote service center. In such link, the communication is heavily affected by large and small scale fading; hence the received signal experiences huge distortion in case of forward error correction. Otherwise, huge service delay arises due to frequent negative acknowledgements. To combat the situation, we can choose Alamouti channel of full rate and fully orthogonal space-time block code (OSTBC). Our aim is to transmit images through Alamouti channel and to observe the quality of the recovered image, in context of bit error rate (BER). We have also observed the impact of fading and additive white Gaussian noise (AWGN) on the image without application of error correction or detection technique of channel coding. To ensure security, we apply the RSA algorithm on each pixel prior transmitting and decrypt them at the receiving end, where we found no impairment from the algorithm. Finally, we observe that the relative performance of the system changes digital modulation schemes. |
| Databáze: | OpenAIRE |
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