| 摘要: |
| 采用自适应编码调制技术(ACM)的卫星数字视频广播新标准(DVB-S2)应用到宽带卫
星通信网中，将极大提升系统吞吐量，提供更丰富的交互式业务。从实际应用的角度，分析
了ACM的控制机制并提出其编码调制方案的简化方法。仿真结果表明，在几乎不影响系统性
能的前提下，该方案可以大幅降低ACM机制的复杂度。 |
| 关键词: 宽带卫星通信 自适应编码调制 DVB-S2 频谱效率 |
| DOI： |
|
| 基金项目:国家自然科学基金资助项目（60832008,60832006）；国家重点
基础研究发展计划（973计划）项目（2009CB320400）；国家科技重大专项（2009ZX03007-0
04） |
|
| ACM Technology for Broadband Satellite Communication |
| WU Tao,ZHANG Jian,LIU Ai-jun |
| (Institute of Communication Engineering,PLA University of Science and Techn
ology,Nanjing 210007,China;Institute of China Electronic Device System Engineering Corporation,Beijing
100141,China) |
| Abstract: |
| Applying the new DVB-S2 standard which exploits adaptive coding and modulation
(ACM) technique in broadband satellite communication networks will grea
tly improve the system throughput and provide more interactive services. In this
paper
, the ACM control mechanism is analysed and its coding and modulation
scheme is simplified from the practical point of view. Simulation results show t
hat the comple
xity of ACM control mechanism will decline significantly almost without decreasi
ng system throughput. |
| Key words: broadband satellite communication adaptive coding and modulation(ACM) DVB-S2 spectral efficiency |
《电讯技术》编辑部 