[PDF] Top 20 Radio Resource Allocation in Collaborative Cognitive Radio Networks Based on Primary Sensing Profile

... resource allocation. We then proposed a simple yet efficient collaborative spectrum monitoring scheme with very low signaling overhead to evaluate the activities level of users in the subchannels, ... See full document

... COGNITIVE radio is a promising technology aiming at better utilization of available channel resources by prescribing the coexistence of licensed (or primary) and un-licensed (secondary or ... See full document

... a cognitive radio network wherein primary and secondary users coexist, an efficient power allocation method repre- sents one of the most important key ...approach based on a game theory ... See full document

... Cognitive radio (CR), as a promising technique to solve spectrum scarcity and improve spectrum utilization by means of dynamic spectrum access, has drawn intensive interests in recent years ...CR ... See full document

... Spectrum sensing cognitive radio is the basic function of the system, and is the realization of spectrum management, the premise of spectrum ...spectrum resource management, application and ... See full document

... conducted based on assumption that the physical location or unique properties of the PU transmitter is known for CR users or the ...spectrum sensing and sends its measurements to the ...of sensing ... See full document

... the primary and the secondary providers should trade bandwidth contracts dynamically, based on time-varying demand patterns arising from their subscribers, to maximize their returns while satisfying their ... See full document

... source allocation in orthogonal frequency division multiplex- ing (OFDM)-based ...the primary and secondary systems while guaran- teeing the fairness of resource ...Specifically, based ... See full document

... wireless networks have had an exponential growth and various wireless network services have been ...under-utilized. Cognitive Radio Networks (CRNs) have attracted considerable attention in ... See full document

... Spectrum Sensing (CSS) is an effective approach to improve the detection performance of vacant frequency bands in Cognitive Radio (CR) ...CR networks. One of these common threats is ... See full document

... power allocation for underlay cognitive networks involving three differ- ent secondary transmission models: (i) OWT-RA, (ii) TWT-DL, and (iii) TWT-RA, ...joint primary outage con- straints due ... See full document

... CR networks has mainly focused on how to efficiently allocate either spectrum or power among CR users subject to interference ...spectrum sensing, spectrum decision, spectrum sharing, and spectrum mobility ... See full document

... the sensing algorithm based on receivers is needed, which usually requires infor- mation of receivers’ positions and channel gains from each SU transmitter to the corresponding PU ... See full document

... 1.2 Resource allocation in cognitive radio networks Resources used up in wireless communication systems such as power, bandwidth and spectrum have always formed the backbone on which ... See full document

... Instantaneous resource allocation (IRA) and ergodic resource allocation ...made based on the long term channel distribution information ...of primary secrecy ...of primary ... See full document

... these networks, which is a challenge in meeting the requirements of real-time and quality of service (QoS) sensitive applications such as online gaming, voice over Internet protocol (VoIP), multimedia ... See full document

... communication networks in the future requires wider ranges of ...utilized. Cognitive radio is an intelligent technique used in wireless networks to take advantage of unused or underutilized ... See full document

... It is a high-level technical computing language and interactive environment for data analysis and visualization, algorithm development and numerical computation. Wide range of applications of MATLAB like signal and image ... See full document

... Spectrum sensing plays a vital role in CRNs and can be broadly classified into two main categories: (1) non-cooperative spectrum sensing (NCSS) [7, 8] and (2) coopera- tive spectrum sensing (CSS) [9, ... See full document

... spectrum sensing methodologies for cognitive radio was presented, and various aspects of spectrum sensing problem was stu- died from a cognitive radio perspective and multi- ... See full document