Dynamic Spectrum Access/ DSA

Definition

Dynamic Spectrum Access is the operational pattern in which radios share spectrum by sensing occupancy and policy and transmitting only on currently available channels. DSA is essential for coalition operations, congested environments, and EW conditions where fixed frequency assignments cannot be trusted. It is implemented as a cognitive-radio control loop bound to a spectrum policy engine.

Reference attributes

Inputs

Spectrum sensing, policy

Outputs

Channel selection, transmit gating

Related terms

• Cognitive Radio (CR)
  Radio that senses its RF environment and adapts waveform, frequency, and power autonomously.
• Spectrum Policy
  Machine-readable rules governing what a radio may transmit, when, and where.
• Anti-Jam Techniques (AJ)
  Waveform and protocol techniques that preserve link integrity under deliberate jamming.