The phenomenon of protein synthesis has been modeled in terms of totally asymmetric simple exclusion processes (TASEP) since 1968. In this article, we provide a tutorial of the biological and mathematical aspects of this approach. We also summarize several new results, concerned with limited resources in the cell and simple estimates for the current (protein production rate) of a TASEP with inh...

In this paper, various techniques involved like DS, FH, PN sequences in Spread Spectrum Communication system are discussed using MATLAB.

Spread Spectrum communication system is one of the most important types of the modern telecommunication systems. It involves diverse activities and processes where time restrictions are very important which formulate these systems very complex. To solve the complexity of these systems and to process the involved activities in time, the Real Time System (RTS) concept, with a vital role, came int...

We extend the sliding block code in symbolic dynamics to transform two sequences of Markov chains with time delay. Under the assumption that chains are irreducible and aperiodic, we prove the central limit theorem (CLT) for the normalized sums of extended sliding block codes from two sequences of Markov chains. We apply the theorem to evaluations of bit error probabilities in asynchronous sprea...

In a multiple access spread-spectrum communication system, the bit error performance is usually limited by the mutual interference between users. The use of multi-user detection is an effective method to reduce such interference. In this paper, we consider two linear multi-user detectors, namely, decorrelating detector and minimum mean-square-error detector, applied to a multiple access chaotic...

In this paper, we propose a new asynchronous multiuser communication system based on spread spectrum and chaotic symbolic dynamics modulation. By combining spread spectrum and chaotic modulation, the proposed system provides increased security by reducing the probability of detection while allowing multiuser transmissions. The sequence synchronization of chaos communication system is studied. A...

Cognitive radio is an encouraging technology for future wireless communication networks. Due to the rapid increase in wireless services, the RF spectrum is going through a scarcity problem. This has forced mobile operators to participate in multimillion dollar auctions to reserve some spectrum resources. Cognitive radio tries to solve this scarcity problem by effectively using the unused portio...

In this paper, different methods of modulation technique applicable in data transferring system over distribution line carries (DLC) system is investigated. Two type of modulation –analogue and digital – is evaluated completely. Different digital techniques such as direct-sequence spread spectrum (DSSS), Frequency-hopping spread spectrum (FHSS), time-hopping spread spectrum (THSS), and chirp sp...