| 講演抄録/キーワード |
| 講演名 |
2016-10-13 15:15
A study on 64APSK Coded Modulation ○Yuki Koizumi・Yoichi Suzuki・Masaaki Kojima・Kyoichi Saito・Shoji Tanaka(NHK) SAT2016-55 |
| 抄録 |
(和) |
We’re engaged in improving the performance of 64APSK coded modulation with the purpose of further increasing transmission capacity for 12GHz-band satellite broadcasting. For designing 64APSK coded modulation, we use channel capacity equivalent to the modulation constrained Shannon limit. The 64APSK constellation and bit allocation for set partitioning are designed so that channel capacity is maximized. We also improve transmission performance by applying LDPC code with a different coding rate for each bit as error-correcting code for 64APSK coded modulation. The transmission performance of this method under additive white Gaussian noise (AWGN) is evaluated by computer simulation. The results show that the required C/N for our proposed methods can be improved by about 1.0 dB compared with the conventional one under the same coding rate of 4/5. |
| (英) |
We’re engaged in improving the performance of 64APSK coded modulation with the purpose of further increasing transmission capacity for 12GHz-band satellite broadcasting. For designing 64APSK coded modulation, we use channel capacity equivalent to the modulation constrained Shannon limit. The 64APSK constellation and bit allocation for set partitioning are designed so that channel capacity is maximized. We also improve transmission performance by applying LDPC code with a different coding rate for each bit as error-correcting code for 64APSK coded modulation. The transmission performance of this method under additive white Gaussian noise (AWGN) is evaluated by computer simulation. The results show that the required C/N for our proposed methods can be improved by about 1.0 dB compared with the conventional one under the same coding rate of 4/5. |
| キーワード |
(和) |
64APSK / Coded Modulation / Set partitioning / LDPC code / Satellite Broadcasting / / / |
| (英) |
64APSK / Coded Modulation / Set partitioning / LDPC code / Satellite Broadcasting / / / |
| 文献情報 |
信学技報, vol. 116, no. 243, SAT2016-55, pp. 51-56, 2016年10月. |
| 資料番号 |
SAT2016-55 |
| 発行日 |
2016-10-06 (SAT) |
| ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します.(許諾番号:10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
| PDFダウンロード |
SAT2016-55 |