The performance of uncoded orthogonal frequency division multiplexing (OFDM) over fading channels is generally improved by introducing some kind of coding. Different coding schemes for OFDM has been reported in the literature. Our aim in this paper is to compare the performance of different coded OFDM systems and compare their bandwidth-complexity tradeoffs. We consider three different coded OF...

Abstract Big data becomes the key for ubiquitous computing and intelligence, Distributed Storage Systems (DSS) are widely used in large-scale centers or cloud efficient management. However, on stored likely to be unavailable due hardware failures cyberattacks, e.g. DDoS. Maximum Distance Separable (MDS) codes commonly recovery of faulty storage nodes data. usually involves access multiple nodes...

University course timetabling problem is one of the hard problems and it must be done for each term frequently which is an exhausting and time consuming task. The main technique in the presented approach is focused on developing and making the process of timetabling common lecturers among different departments of a university scalable. The aim of this paper is to improve the satisfaction of com...

The paper proposes a construction method of bilateral system using redundant manipulator. In bilateral system, it is important that operation can be realized in narrow space and at remote plate. Then the master-slave robots with redundancy are convenient and needed to achieve the bilateral motion effectively. However, human operation will become difficult because of the multifunctional mechanis...

When mobility, the number of independent variables to describe system motion exactly, is greater than the degree-of-freedom of task space, the system is called a kinematically redundant system. On the other hand, redundant actuation indicates a situation when there are more actuators than a system’s mobility. Redundant actuation yields many advantages. First, actuation redundancy can increase t...

Detection of redundant linear constraints is important for a variety of applications including linear programming, variable elimination, canonical forms, and convex hull algorithms to name a few. Systematic semantic methods (i.e. optimization) exist to identify all redundant constraints but they are generally computationally expensive. It is thus desirable to identify syntactic criteria to redu...