31-08-2017, 01:32 PM
Dynamic spectrum management (DSM), also called dynamic spectrum access (DSA), is a set of techniques based on theoretical concepts of network information theory and game theory that are being researched and developed to improve the performance of a communications network as a whole. The DSM concept also draws principles from the fields of optimization between layers, artificial intelligence, machine learning, etc. It has recently been made possible by the availability of software radio due to the development of processors fast enough in both servers and terminals . These are cooperative optimization techniques. This can also be compared or related to the optimization of a link in the network due to the loss of performance on many links negatively affected by this unique optimization.
It is most commonly applied to optimize the performance of the digital subscriber line (DSL) of a network. Another potential application of DSM is for cognitive radio.
The important and common principles of DSM include:
• Link adaptation
• Bandwidth management
• Multiuser MIMO
• Pre-cancellation of estimated interference
• Combination of unused channels (not preassigned) for a single user or link
It is most commonly applied to optimize the performance of the digital subscriber line (DSL) of a network. Another potential application of DSM is for cognitive radio.
The important and common principles of DSM include:
• Link adaptation
• Bandwidth management
• Multiuser MIMO
• Pre-cancellation of estimated interference
• Combination of unused channels (not preassigned) for a single user or link