Resource Consumption in Dynamic Spectrum Access Networks: Applications and Shannon Limits

When a frequency band has been selected for a session in a dynamic spectrum access network, the initial choices for the modulation and coding must be consistent with the bandwidth that is available and the session´s quality-of-service priorities. A measure of resource consumption is developed for use in the selection of the code-modulation combination. The resource- consumption metric accounts for the bandwidth, data- transmission time, and transmitted power for the session. Shannon capacity limits are employed to bound the resource consumption and permit tradeoffs between the time-bandwidth product of the signals and the amount of power that must be transmitted to achieve reliable communication.