Resource Allocation for Green Cognitive Radios: Energy Efficiency Maximization
نویسندگان
چکیده
منابع مشابه
Channel Allocation in Cognitive Radios
In this project we investigate the problem of channel allocation to a set of users in a centralized Cognitive Radio System. We consider three possible formulations of the problem and explain the relationship of these constraints to physical limiting factors. In the first formulation, we aim to minimize total power used in the system while fulfilling user rate requirements. This problem can be s...
متن کاملAdaptive Bandwidth Allocation Scheme for Cognitive Radios
In recent past, cognitive radio has come out to as a promising solution to the spectrum scarcity problem. It tends to increase the spectrum utilization by making use of underutilized frequencies with the help of dynamic spectrum allocation technique. In this paper, we present one such scheme for bandwidth allocation to cognitive radio. Our proposal helps the channel distributor to decide the qu...
متن کاملEnergy Efficient Techniques for Resource Allocation in Cognitive Networks
The Cognitive Radio paradigm is aimed to optimize the utilization of licensed spectrum bands thanks to coexistence within the same network of licensed (primary) and cognitive (secondary) users. In this context, one of the most important key aspects is represented by an efficient resource allocation between secondary and primary users. Modeling it as an optimization problem, this paper provides ...
متن کاملResource Allocation for Secure MISO-NOMA Cognitive Radios Relying on SWIPT
Cognitive radio (CR) and non-orthogonal multiple access (NOMA) are two promising technologies in the next generation wireless communication systems. The security of a NOMA CR network (CRN) is important but lacks of study. In this paper, a multiple-input single-output NOMA CRN relying on simultaneous wireless information and power transfer is studied. In order to improve the security of both the...
متن کاملJointly Optimal Sensing and Resource Allocation for Multiuser Overlay Cognitive Radios
Successful deployment of cognitive radios requires efficient sensing of the spectrum and dynamic adaptation of the available resources according to the sensed (imperfect) information. While most works design these two tasks separately, in this paper we address them jointly. In particular, we investigate an overlay cognitive radio with multiple secondary users that access orthogonally a set of f...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Wireless Communications and Mobile Computing
سال: 2018
ISSN: 1530-8669,1530-8677
DOI: 10.1155/2018/1327030