RETRACTED ARTICLE: Improved SOVA decoding for UEP wireless transmission of JPEG 2000 images over MIMO-OFDM systems
| Autor: | V. R. Sarma Dhulipala, V. Aarthi |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
General Computer Science
Computer science 020206 networking & telecommunications Data_CODINGANDINFORMATIONTHEORY 02 engineering and technology computer.file_format MIMO-OFDM symbols.namesake Additive white Gaussian noise JPEG 2000 0202 electrical engineering electronic engineering information engineering Turbo code symbols Bit error rate 020201 artificial intelligence & image processing Algorithm computer Decoding methods Soft output Viterbi algorithm Computer Science::Information Theory Communication channel Rayleigh fading |
| Zdroj: | Journal of Ambient Intelligence and Humanized Computing. 12:5931-5942 |
| ISSN: | 1868-5145 1868-5137 |
| Popis: | In this paper, improved Joint Source Channel (JSC) decoding using turbo codes is employed that are unified into JPEG 2000 decoder architecture. Rather than using conventional decoding approach, the proposed system provides reduced BER and complexity. This work deliberates Soft Output Viterbi Algorithm (SOVA) for its real time implementation features. Nevertheless, the algorithm suffers from performance degradation due to optimistic and correlation effects. The objective of this work is to enhance the performance of SOVA by using appropriate reduction factors that integrates and eliminates both these distortions. Acquired Integrated Factor is incorporated in the turbo decoders of the image transmission system. Bit Error rate and Peak Signal to Noise Ratio (PSNR) analysis is made by considering Additive White Gaussian Noise and Rayleigh fading channel through MATLAB simulation. To illustrate the visual quality improvement of the proposed scheme, comparison with other FEC codes is done with significant PSNR gains. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink