The popularity of ubiquitous Internet services has spurred the fast growth of wireless communications by launching data hungry multimedia applications to mobile devices. Powered by spectrum agile cognitive radios, the newly emerged cognitive radio networks (CRN) are proposed to provision the efficient spectrum reuse to improve spectrum utilization. Unlicensed users in CRN, or secondary users (S...

Cognitive radio technology may offer the capability for suitably enabled terminals to sense spectrum activity and reuse free channels, thus allowing an increase in efficiency by permitting dynamic sharing of spectrum between users. Accurate spectrum sensing is a vital requirement. This work presents simulation of an algorithm that improves the accuracy of spectrum sensing by combining results f...

Code reuse attacks such as return oriented programming and jump oriented programming are the most popular exploitation methods among attackers. A large number of practical and non-practical defenses are proposed that differ in their overhead, the source code requirement, detection rate and implementation dependencies. However, a usual aspect among these methods is consideration of the common be...

Superscalar microprocessors currently power the majority of computing machines. These processors are capable of executing multiple independent instructions in each clock cycle by exploiting the Instruction-Level Parallelism (ILP) available in programs. Theoretically, there is a considerable amount of ILP available in most programs. However, the actual amount of exploitable ILP within a fixed in...

As is known, to eliminate interference, the frequency reuse approach is followed in Digital TV planning similar to cellular network, avoiding the use of the same channel in two neighboring allotments. There are large areas where a certain group of TV channels are deliberately not used. They are called white spaces in TV spectrum (TVWS). Considering the great economical value of TV spectrum, it ...

Fragmented spectrum allocations at RF and mm-Wave, increased use of carrier aggregation/MIMO dense spectrum-reuse in wireless links has led to interest the design integrated wideband, high-linearity MIMO RX that provide low noise, blocker tolerance reconfigurability across signal domains. In this paper, receive architectures for wide operating range are presented with a focus on recent developm...

Cognitive radio with spectrum sensing and spectrum reuse has great opportunities for industrial networking. Adapting to the current interference situation and utilising the available frequencies in an effective manner can greatly improve the data delivery capabilities. At the same time, real-time demands must be met. In this paper, we present a medium access control protocol supporting dynamic ...

The decision of using existing software components versus building from scratch custom software is one of the most complex and important choices of the entire development/integration process. However, the reuse of software components raises a spectrum of issues, from requirements negotiation to product selection and integration. The correct tradeoff is reached after having analyzed advantages a...

The Fractional Frequency Reuse (FFR) scheme combines the benefits of universal Frequency Reuse and Frequency Reuse Factor (FRF)3. Universal Frequency Reuse scheme has high spectral efficiency while FRF=3 scheme is normally used to mitigate Intercell Interference (ICI) in a cellular system. Nevertheless, the advancement of the wireless technology does not stop here. The trend of Long Term Evolut...

Fractional Frequency Reuse techniques can be employed to address interference in mobile networks, improving throughput for edge users. There is a tradeoff between the coverage and overall throughput achievable, as interference avoidance techniques lead to a loss in a cell’s overall throughput, with spectrum efficiency decreasing with the fencing off of orthogonal resources. In this paper we pro...