التفاصيل البيبلوغرافية
| العنوان: |
Opportunistic Spectrum Access via Periodic Channel Sensing. |
| المؤلفون: |
Qianchuan Zhao, Geirhofer, Stefan, Lang Tong, Sadler, Brian M. |
| المصدر: |
IEEE Transactions on Signal Processing; Feb2008, Vol. 56 Issue 2, p785-796, 12p, 1 Black and White Photograph, 1 Chart, 1 Graph |
| مصطلحات موضوعية: |
CONSTRAINTS (Physics), MARKOV processes, MILITARY strategy, MICROSPORIDIOSIS, RESOURCE allocation, QUALITATIVE chemical analysis, ALGORITHMS, ELECTRONIC equipment, ENGINEERING |
| مستخلص: |
The problem of opportunistic access of parallel channels occupied by primary users is considered. Under a continuous-time Markov chain modeling of the channel occupancy by the primary users, a slotted transmission protocol for secondary users using a periodic sensing strategy with optimal dynamic access is proposed. To maximize channel utilization while limiting interference to primary users, a framework of constrained Markov decision processes is presented, and the optimal access policy is derived via a linear program. Simulations are used for performance evaluation. It is demonstrated that periodic sensing yields negligible loss of throughput when the constraint on interference is tight. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
