Adaptive Coding and Modulation

Adaptive Coding and Modulation (ACM) is a method of data transmission in which the receiver provides feedback on the quality of the received data and adapts the data coding and data modulation of the data transmission channel. For example, ACM is used in DVB-S2 , with the return channel being set up terrestrially or via satellite.

The constant coding and modulation (CCM) and variable coding and modulation (VCM) methods do not expect any or almost no feedback from the receiver, but do not achieve the transmission rates of ACM.

literature

• Andrea Goldsmith: Wireless Communications. Cambridge University Press, New York 2005, ISBN 0-521-83716-2 .
• Mohamed Ibnkahla: Adaptive Signal Processing in Wireless Communications. Taylor & Francis Group, Boca Raton 2009, ISBN 978-1-4200-4601-4 .

See also

• Adaptive Differential Pulse Code Modulation
• Fading (electrical engineering)

Web links

• Briefing on Adaptive Coding and Modulation (accessed July 30, 2018)
• Adaptive Coding and Modulation Experiment with NASA's Space Communication and Navigation Testbed (accessed July 30, 2018)
• Adaptive Coding and Modulation Techniques for Advanced Satellite Mobile Systems, (accessed July 30, 2018)