کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4955801 1444362 2017 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Cross layer optimization for outage minimizing routing in cognitive radio ad hoc networks with primary users' outage protection
ترجمه فارسی عنوان
بهینه سازی لایه صلیب برای قطع کردن مسیریابی حداقل در شبکه های رادیویی شناختی رادیویی با حفاظت از قطع اولیه کاربران
کلمات کلیدی
شبکه های اطلاعاتی رادیویی شناختی، رویکرد متقابل لایه مسیریابی توزیع شده، احتمال قطع شدن پایان دادن به پایان،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر شبکه های کامپیوتری و ارتباطات
چکیده انگلیسی
Path selection to minimize end-to-end (e2e) outage experience of cognitive users (CUs) in a given communication session is one of the key challenges in multi-hop cognitive radio ad hoc networks, where each CU node experiences a unique spatio-temporal variation of spectrum access opportunity. We study the problem under the constraint of probabilistic interference to primary receivers, in contrast to the popular trend of considering detection probability of primary user (PU) transmissions. This is formulated as a joint transmit power control, spectrum assignment and routing problem and a constrained optimization framework are presented for it. Further, using a standard technique for solving the convex optimization problem, a closed form expression for the transmission power of source as well as relay nodes is derived. Based on this, a centralized solution is proposed for optimal spectrum assignment and route selection. In addition, due to the prohibitive complexity of the optimal solution, a low complexity spectrum aware-outage minimizing opportunistic routing (SA-OMOR) solution is presented, along with its possible distributed implementation. Simulation results are used to validate our analytical results as well as the performance comparison between the proposed SA-OMOR scheme and the optimal one.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Network and Computer Applications - Volume 98, 15 November 2017, Pages 114-124
نویسندگان
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