Analysis of error performance for Turbo coded pulse position width modulation
| Autor: | Qing-gui Tan, Feng-qin Wang, Ai-ping Huang, Wei Li, Yangyu Fan |
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| Rok vydání: | 2009 |
| Předmět: |
Iterative method
business.industry Computer science Real-time computing Data_CODINGANDINFORMATIONTHEORY Condensed Matter Physics Atomic and Molecular Physics and Optics Coding gain Electronic Optical and Magnetic Materials Turbo equalizer Pulse-position modulation Bit error rate Turbo code Electrical and Electronic Engineering Photonics business Algorithm Pulse-width modulation |
| Zdroj: | Optoelectronics Letters. 5:376-379 |
| ISSN: | 1993-5013 1673-1905 |
| DOI: | 10.1007/s11801-009-9107-6 |
| Popis: | To lower the bit error rate (BER) of the pulse position width modulation (PPM+PWM), which is the improved scheme of the pulse position modulation (PPM), correcting coding technique is necessary. After setting up the analytic model, the Turbo decoder and iterative algorithm for PPM+PWM are studied, and the system error performance of uncoded and Turbo coded PPM+PWM under the Gaussian channel is simulated and analyzed, as well as the effects of the number of iterations and frame size on the bit error rate. The results show that the introduction of Turbo code can get the encoding gain of 4.0–6.9 dB, which improves the error performance of system effectively and has advantage in military communications. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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