| TONG Zheng-rong,HU Gui-bin,CAO Ye,ZHANG Wei-hua.Research on the transmission performance of turbo codes in DDO-OFDM system[J].Optoelectronics Letters,2015,11(2):134-136 |
| Research on the transmission performance of turbo codes in DDO-OFDM system |
| Author Name | Affiliation | | TONG Zheng-rong | Key Laboratory of Film Electronics and Communication Devices and Key Laboratory of Intelligent Computing and Novel Software Technology, Tianjin University of Technology, Tianjin 300384, China | | HU Gui-bin | Key Laboratory of Film Electronics and Communication Devices and Key Laboratory of Intelligent Computing and Novel Software Technology, Tianjin University of Technology, Tianjin 300384, China | | CAO Ye | Key Laboratory of Film Electronics and Communication Devices and Key Laboratory of Intelligent Computing and Novel Software Technology, Tianjin University of Technology, Tianjin 300384, China | | ZHANG Wei-hua | Key Laboratory of Film Electronics and Communication Devices and Key Laboratory of Intelligent Computing and Novel Software Technology, Tianjin University of Technology, Tianjin 300384, China |
|
| Abstract: |
| A direct detection optical orthogonal frequency division multiplexing (DDO-OFDM) system using turbo codes is built, and the transmission performance comparison between coded system and uncoded system is analyzed. Three decoding algorithms, which are Log-maximum a posteriori (MAP), Max-Log-MAP and threshold Max-Log-MAP, are used in the turbo coded system. By comparing three decoding algorithms, the system using Max-Log-MAP algorithm has the best bit error rate (BER) performance. At the transmission distance of 240 km, the uncoded system with transmission rate of 30 Gbit/s can get the BER performance at the degree of 8.93×10-3 with optical signal to noise ratio (OSNR) of 24 dB, while the turbo coded system with transmission rate of 50 Gbit/s can achieve it within OSNR of 20 dB. |
| Hits: 3565 |
| Download times: 0 |
| This work has been supported by the National Natural Science Foundation of China (No.61107052), the Tianjin Natural Science Foundation of China (No.11JCYBJC0010), and the Tianjin Youth Foundation of China (No.13JCQNJC01800). |
| View Full Text Download reader |
|
|
|
