Accession Number:

ADA633473

Title:

Decentralized Cognitive MAC for Dynamic Spectrum Access

Descriptive Note:

Conference paper

Corporate Author:

CALIFORNIA UNIV DAVIS DEPT OF ELECTRICAL AND COMPUTER ENGINEERING

Personal Author(s):

Report Date:

2005-11-01

Pagination or Media Count:

10.0

Abstract:

We consider the problem of opportunistic dynamic spectrum access DSA in an ad hoc network in which unlicensed secondary users communicate through channels not used by the primary users. Decentralized cognitive medium access control protocols are presented that allow secondary users to recognize spectrum opportunity and transmit based on a partial observation of the instantaneous spectrum availability. Under a framework of Partially Observable Markov Decision Process POMDP, we derive optimal and suboptimal decentralized strategies for the secondary users to decide which channels to sense and access for the maximization of the overall network throughput.

Subject Categories:

  • Computer Systems
  • Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE