Content caching at base stations is a promising solution to address the large demands for mobile data services over cellular networks. challenging problem as it requires predicting future popularity of content and operating characteristics In this paper, we focus on constructing an algorithm that improves users' quality experience (QoE) reduces network traffic. The accounts behavior properties (e.g. cache size, bandwidth, load). constructed aware adaptive scheme uses extreme-learning machine...

Energy crisis is the most important issue in today's world. Conventional energy resources are not only limited but also prime culprit for environmental pollution. Renewable getting priorities whole world to lessen dependency on conventional resources. Solar rapidly gaining focus as an means of expanding renewable uses. cells those convert sun's into electrical costly and inefficient. Different mechanisms applied increase efficiency solar cell reduce cost. tracking system appropriate...

This paper studies distributed formation of femto-clouds in a UMTS LTE network. Femtocell access points (FAPs) are equipped with computational resources. They share their resources neighboring FAPs and form local clouds the aim to avoid remote cloud costs while improving user quality experience (QoE) terms handling latency. In exchange for sharing excess resources, receive monetary incentives proportional contribution performing tasks femto-cloud. The resource problem is formulated as an...

This paper studies formation of local femto-clouds in a UMTS LTE network via cooperative game- theoretic formulation. Femtocell access points (FAPs) equipped with processing power form collaborative coalitions, namely, femto-clouds, neighboring FAPs and share their computational resources exchange for monetary incentives. Femto-clouds are formed the aim to avoid remote cloud costs while improving quality experience (QoE) users terms handling latency. The core formulated game represents an...

In this paper a completely new analytical approach to the performance evaluation of turbulence induced fading on free space optical (FSO) CDMA communication system is presented. The current analysis develops an expression average SINR FSO using switched inversed keyed(SIK) correlator transmitter in presence and multiple access interference(MAI). Link evaluated terms bit error rate which numerically computed. improvement over atmospheric channel proposed by means applying diversity rake...

This paper studies formation of local femto-clouds in a UMTS LTE network via cooperative game-theoretic formulation. Femtocell access points (FAPs) equipped with processing power form collaborative coalitions, namely, femto-clouds, neighboring FAPs and share their computational resources exchange for monetary incentives. Femto-clouds are formed the aim to avoid remote cloud costs while improving quality experience (QoE) users terms handling latency. The core formulated game represents an...

This paper demonstrates an analytical approach on the bit error rate (BER) performance evaluation of a multi- carrier code division multiple access (MC-CDMA) communication link operating over terrestrial free space optical (FSO) channel considering effect atmospheric turbulence The induced intensity fading is statistically modeled by Gamma-Gamma PDF (probability density function). Bit improvement proposed using photo detector spatial diversity with Equal Gain Combining (EGC) and Turbo...

The paper presents risk-neutral and risk-averse caching policies that can be deployed in a femtocell network with limited storage capacity to reduce the time delay of servicing content requests. use forecasting algorithm estimate cumulative distribution function requests based on features. Given function, mixed-integer linear program is used compute where cache network. account for uncertainty associated estimating using coherent Conditional Value-at-Risk (CVaR) measure. For large number...

Small-cell networks (SCNs) have emerged as a potential solution to the rapidly increasing demand for high data rates. The base stations (also referred access nodes) of small cells provide service group users through link and they are connected core/global network via backhaul link. In this paper, we develop queuing analytical model that considers channel scheduling mechanisms in both links, time varying nature channels well bursty packet arrivals. For consider so-called max...

In this paper, we study rate allocation mechanisms that allocate available transmission of a particular cognitive radio (CR) user among its different class services. particular, formulate the mechanism CR between two services namely, delay sensitive (DS) and best effort (BE) as Markov decision process. Then optimal minimizes average queuing DS service while guaranteeing packet loss probabilities both is obtained using linear programming technique. Since can be complex to implement in...

In this paper a composite analytical model of DS-CDMA wireless communication system considering multipath Nakagami fading along with Doppler frequency shift, tracking jitter, local oscillator offset and multi-access interference (MAI) for different PN sequences is presented. The analysis presents the development novel approach to find pdf (probability density function) signal plus noise ratio (SINR) at output Rake receiver combined influence fading, timing jitter etc maximal combining (MRC)...

In this paper, we study rate allocation mechanisms that allocate available transmission of a particular secondary user (SU) among its different classes services assuming specific channel assignment algorithm across active SUs is in place. particular, formulate the mechanism SU between two namely, delay sensitive (DS) and best effort (BE) as Markov decision process. Then optimal minimizes average queuing DS packets while guaranteeing packet loss probabilities both obtained using linear...

In this paper, we develop a queueing analytic model that incorporates imperfect sensing in order to measure different performance parameters e.g., collision probability, packet loss probability and delay. This is useful for call admission control (CAC) decision cognitive radio network (CRN) when there certain error as well quality of service (QoS) requirements both primary (CR) users. Using our developed model, compare the random transmission protocol with traditional deterministic protocol....

In this paper, we develop a queueing analytic model that incorporates imperfect sensing in order to measure different performance parameters e.g., collision probability, packet loss probability and delay. This is useful for call admission control (CAC) decision cogniti

In this paper an analytical model of a MC-DS-CDMA with TF-domain spreading for wireless communication system spatial diversity considering channel fading, Doppler shift, multi-access interference (MAI) along AWGN is presented. The analysis presents novel approach to the development expression signal plus noise ratio (SINR) fading and shift SISO (single input single output) system. also extended SIMO multiple maximal combining (MRC) scheme probability density function (pdf) output MRC...