| Authors |
D. Ishikawa, C. Ben Naila, H. Okada, M. Katayama |
| Title |
Performance Analysis of LDPC coded Outdoor Long-Distance Imaging MIMO System |
| Authority |
International Conference on Computing, Networking and Communications (ICNC), pp.1139-1143 |
| Summary |
In this work, the performance of light-emitting diode-based (LED-based) imaging Multiple Input Multiple Output (MIMO) system for long-distance outdoor transmission is evaluated, and based on the results, a proposal for improving the performances is presented. We first conducted outdoor communication experiments, and error-free transmission of 200 Mbps over 100 m was achieved without using Forward Error Correction or other error control schemes. Nonetheless, communication errors occurred at distances shorter than 100 m. Furthermore, the bit error rate (BER) differed for each beam from each transmitting LED. Therefore, we introduced Low-density Parity-check (LDPC) codes along with a decoding method that takes into account the BER of each signal beam. The effectiveness of this decoding method is predicated on the time-invariance of the BER, which we have separately confirmed through experimental data. We assume that encoded bit errors for each signal beam would follow the BER observed in our non-encoded communication experiments. Under this assumption, we assessed various LDPC codes with different code lengths and coding rates. Our results demonstrated an improvement in BER performance. |
| 年月 |
2024年2月 |
| DOI/Handle |
DOI:10.1109/ICNC59896.2024.10556090
|
| 開催場所 |
Big Island, Hawaii, USA |
| 研究テーマ |
可視光通信／光無線通信
|
| 言語 |
英語 |
| 原稿/プレゼン資料 |
 /  (ローカル限定) |
