کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
447711 1443179 2012 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Power allocation in cognitive radio networks with cooperative spectrum sensing
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر شبکه های کامپیوتری و ارتباطات
پیش نمایش صفحه اول مقاله
Power allocation in cognitive radio networks with cooperative spectrum sensing
چکیده انگلیسی

This paper studies power allocation among cooperative nodes (CNs) and secondary user (SU) under the assumption that only mean channel gains are available. We aim to find the power allocation that maximizes the SU average throughput under the constraints of the total power and individual transmission power for CN. We also consider the requirement on cooperative spectrum sensing with target miss-detection probability. Due to the high computational complexity of the optimal solution, we derive a near-optimal solution with low complexity while satisfying the requirements on transmission power and miss-detection probability. Moreover, the closed-form expression of approximation of power ratio is presented. Finally, numerical results verify our analysis and show that the proposed scheme achieves significant performance gain over others, and closes to the optimal solution.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: AEU - International Journal of Electronics and Communications - Volume 66, Issue 11, November 2012, Pages 949–954
نویسندگان
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