DVB-S2 has one very important new element called Adaptive Coding and Modulation (ACM), hence DVB-S2/ACM. For VSAT services, ACM alters the modulation and coding to optimize the QoS and throughput, adapting to varying link conditions and this is …

Adaptive Coding and Modulation (ACM) is an enhancement to the DVB-S2 standard that dramatically improves its performance in the two-way VSAT environment, by dynamically optimizing the operating parameters of the outbound carrier.

2023年4月15日 · Newtec面向DVB-S2X推出的FlexACM解决方案，为了更好地实现ACM功能，还加入了噪声及失真预估技术），如图4所示，DVB-S2X相比于DVB-S2的频谱效率提高了51%，更接近香农极限。

Adaptive Coding and Modulation (ACM) is a feature incorporated into the DVB-S2 satellite specification, allowing real-time adaptation of transmission parameters...

Variable Coding and Modulation (VCM) and Adaptive Coding and Modulation (ACM) are techniques that are strongly associated with the DVB-S2 standard. VCM can be used to provide different levels of error protection to different components within the service.

2021年1月1日 · To utilize the ACM feature in DVB-S2 and to additionally adapt power, in this paper, an adaptive modulation, coding (MODCOD) and power scheme is proposed. By investigating a fuzzy system and differential evolution algorithm, to select the set of MODCODs and optimum power vector, respectively, for the next transmission interval.

2004年6月16日 · This paper focuses on the profiles supporting interactive type of services, for which Adaptive Coding and Modulation (ACM) has been included in the new generation of the standard. Following the DVB-S2 specifications, a number of modem configurations and tools are made available for implementing ACM in interactive systems.

2025年1月6日 · 本文首先概述了ACM技术及其在DVB-S2X标准中的基础，重点介绍了ACM的工作原理、优势以及与其它调制技术的比较。 随后，文章详细分析了ACM技术在DVB-S2X中的应用，包括实现过程、卫星链路性能优化以及配置与管理等方面。 在实践案例分析部分，文中通过选定的成功案例深入探讨了ACM技术的实际应用，并对遇到的挑战提供了相应的解决方案。 最后，文章展望了ACM技术的未来发展趋势，包括其在新通信技术融合中的角色以及行业应用和标准 …

2011年2月16日 · 设计和分析了DVB-S2系统中自适应编码调制(ACM)模式下基于里德-穆勒 (Reed-Muller,RM)码的帧同步技术. 从最大似然角度分析了一阶RM码基于快速哈达玛变换(FHT)的译码算法.

2012年4月13日 · 本文研究设计了基于dvb-s2 标准的宽带多媒体卫星acm模 型，分析了降雨对于该多媒体卫星系统通信链路的影响，在此基础上提出了ACM技术，并 创新性的采用链路和网络两种软件相结合的方式对其进行仿真。