[PDF] Top 20 Energy Efficiency and Throughput Optimization of Cognitive Relay Networks

... whole cognitive transmit process of cog- nitive system can be divided into three phases: spectrum sensing, cognitive source broadcast- ing information to cognitive relay and cognitive ... See full document

... The cognitive radio networks with energy harvesting (EH-CRNs) have emerged as a promising way to address the problem of spectrum scarcity and energy efficiency while consistent with the ... See full document

... antenna relay energy-assisted decode forward (EDF) was not applicable for multi cognitive users that has less data ...demands energy harvesting or Simultaneous Wireless Information and Power ... See full document

... higher energy-efficient ...the energy efficient optimization problem with multiple interference power ...the energy efficient power allocation problems of OFDM- based CR under single and ... See full document

... the throughput and the energy efficiency, which are typically two inconsistent ...increased throughput and supported by the ad- vanced signal processing exploited in the physical ...the energy e ... See full document

... and relay selection scheme for energy efficient cooperation in energy harvesting-wireless sensor networks ...the energy efficiency of each node in a clustering based ...the ... See full document

... Cognitive relay networks (CRNs) combine cognitive radio technique and cooperative relay ...technology. Cognitive radio offers a tempting solution to increase spectrum usage ... See full document

... (OFDM)-based cognitive radio networks (CRNs) using underlay spectrum access model is presented under multiple secondary users (SUs) with energy harvesting ...average throughput of secondary ... See full document

... joint relay selection and energy allocation in CCNs. In the relay selection, we take into account the residual energy and channel ...The relay with maximum SNR is selected among the ... See full document

... the energy efficiency optimization problem of communication in ...WSN. Energy efficiency based packet size optimization in WSN was investigated firstly in ...[14]. Energy efficiency of ... See full document

... cellular networks provides a great attention for increasing the cellular capacity, improving throughput, energy efficiency and increasing the battery lifetime of user ...Resource ... See full document

... the optimization problem of the spectrum access oppor- ...of energy consump- tion in ...the energy efficiency, which is de- fined as the ratio of SU ’ s spectrum access opportunity to the ... See full document

... two-way relay-assisted D2D communi- cations with certain SI cancelation where the relay user and D2D users can transmit and receive signals simul- taneously, and thus, the SE gets further ...system ... See full document

... coverage, throughput, and reliability of wireless communication systems, thus attracting intense research interest in the past ...half-duplex relay systems, which encounter loss of resource ...full-duplex ... See full document

... higher throughput, improved coverage and enhanced reliability, future wireless cellular networks face significant technical ...place relay stations between transmitters and receivers in the cellular ... See full document

... reliability, throughput, and coverage areas of wireless ...spectral efficiency, the concept of cognitive radio [6] was proposed by ...In cognitive radio networks, sec- ondary users ... See full document

... • This work has many operational assumptions. For example, the relays know the channel gain they are using as well as the channel gain associated with the other relays. How this knowledge is shared has not been ... See full document

... considerable energy savings. The optimization model of the problem is NP- complete, but the authors propose LP-based heuristics resulting in 79% energy savings on the Abilene ...minimum energy ... See full document

... sensor networks (WSNs) are gaining momentum in al- most every facet of life whether it is health care, home security, forest area su- pervision, monitoring earth movement or battle field ...limited energy ... See full document

... for cognitive radio ...the cognitive TW AF relaying scheme can significantly enhance the reliability of unlicensed networks in which the transmit power at secondary users is strictly ... See full document