| Autor: |
Ankit M Prajapati, Preeti Dewani, Bhavin Patel, Tanish Zaveri |
| Rok vydání: |
2014 |
| Předmět: |
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| Zdroj: |
2014 2nd International Conference on Emerging Technology Trends in Electronics, Communication and Networking. |
| Popis: |
It has been observed that in the heterogeneous environment for the transmission of multimedia data packet loss rate and packet length is varying. Also, there is a need to recover the data at the receiver end even in the worst environment conditions by error correction and detection techniques. Forward error correction (FEC) provides poor performance when packet loss is higher and packet length is larger. As per survey, it is proved that multiple description coding (MDC) out performs than FEC in this condition. The performance of MDC is even better when High Efficiency Video Coding (HEVC) is used as a source coding standard. On considering this point, we have proposed a scheme in which HEVC is used as a prior stage of MDC and we use FEC as the standard encoder to implement MDC. In this scheme, three routes are defined for sending the packets, according to the environment conditions and available bandwidth the one which best suits will be selected. As HEVC is used to fulfill the demand of sending high resolution video by reducing bit rate requirement by providing better coding efficiency [3] which is the key point of using it in our scheme. Due to this, better video quality will be obtained for 4k × 2k resolution and even the problem with the heterogeneous environment will be solved. By the results we have observed that at low bit rate performance of HEVC is better than H264 in terms of PSNR and when packet length is large and packet loss rate is high then combination of MDC and FEC (a double or multiple description coding scheme) outperforms FEC (a single description coding scheme). |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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