[PDF] Top 20 Energy Efficient Power Allocation in Cognitive Radio Network: A Case of Imperfect Spectrum Sensing A Study

... years. Cognitive radio can play an important role in improving energy efficiency in wireless networks, because from the green perspective, spectrum is a scare natural resource which should not ... See full document

... with energy efficiency of CRNs. The devices compare current energy consumed with predefined threshold and hence increases network life ...better energy efficiency of the protocol with respect ... See full document

... the energy consumption and noticeably lessens the system life time; where CRs are battery powered terminals, therefore, research works have focused on designing energy efficient CSS ...for ... See full document

... an efficient distributed spectrum sharing scheme by describing the conflict and cooperation among CR users and hence allowing each user to rationally decide on its best ...channel allocation [10] and ... See full document

... we study a sensing-based resource allocation scenario in cognitive femtocell networks and present an efficient distributed imperfect-spectrum-sensing-based resource ... See full document

... systems. Cognitive Radio(CR) [1] is a rising technology to increase the ability of spectrum handling in present ...So, spectrum sensing technology is an important work for the ... See full document

... optimal sensing capabilities and power allocation strategy that maximizes secondary users throughput of cognitive radio ...The power allocation is the function of the ... See full document

... entropy-based spectrum sensing scheme is pro- posed by combining the entropy detection in the time domain and the matched ...entropy-based spectrum sensing scheme in the frequency domain based ... See full document

... the sensing time/period constitutes another approach that can be adopted for enhancing the energy efficiency of ...individual sensing systems. An adaptive sensing period based on the past ... See full document

... transmission power for I th =-20 dBW and = I th -10 ...transmission power increases. Hence, an energy-efficient model can be designed by selecting suitable number of SUs to avoid unnecessary ... See full document

... finite radio resources. However, conventional static spectrum allocation policies can no longer provide substantial improvements since these are subjected to an inefficient use of the wireless ... See full document

... (i.e., energy consumptions, time costs and bandwidth occupa- tion) should be analyzed carefully before designing the centralized CSS ...an energy-efficient setup and a throughput op- timization ... See full document

... to spectrum sensing, and lat- est challenges at physical and MAC layers are also dis- cussed in ...a spectrum broker, which is responsible for sharing the available spectrum band among the CR ... See full document

... pressed sensing methods (called multi-step and one- step) to recover the signal by wavelet approach [5] and then developed the signal recovery idea and performed the distributed compressive spectrum ... See full document

... finding spectrum holes by sensing the radio spectrum in the local neighborhood ver in an unsupervised manner ...The sensing function is considered to be an essential part of ... See full document

... exploiting cognitive networking in which wireless nodes intelligently sense and operate on the unused spectrum for ...the network accessibility and thus extends rising network ...dynamic ... See full document

... on spectrum utilization by exploiting the spectrum holes or on the coexistence be- tween secondary and primary users which in turns classifies the cognitive radio networks into three broad ... See full document

... from energy consumption ...of spectrum coordination messages contribute CO2 emission of ...the spectrum information from different CR ...CRNs, spectrum should minimize the explicit information ... See full document

... Various Spectrum Sensing techniques are Energy Detection, Matched Filter, Cyclostationary detection, Cooperative Spectrum Sensing ...In Energy detection, the secondary user ... See full document

... the spectrum-sensing effectiveness and provide better performance in cases of poorer SNR ...with spectrum sensing better manages the use of the spectrum, although this requires prior ... See full document