Design & Implementation of Data Scrambler anf Descrambler system using VHDL.
Multimedia data security is very important for multimedia commerce on the internet and real time data multicast. An striking solution for encrypting data with adequate message security at low cost is the use of Scrambler/Descrambler. Scramblers are necessary components of physical layer system standards besides interleaved coding and modulation. Scramblers are well used in modern VLSI design especially those are used in data communication system either to secure data or re-code periodic sequence of binary bits stream. However, it is necessary to have a descrambler block on the receiving side while using scrambling data in the transmitting end to have the actual input sequence on the receiving end. Scrambling and De-scrambling is an algorithm that converts an input string into a seemingly random string of the same length to avoid simultaneous bits in the long format of data. Scramblers have accomplish of uses in today’s data communication protocols. On the other hand, those methods that are theoretical proposed are not feasible in the modern digital design due to many reasons such as slower data rate, increasing information, circuit hazards, uncountable hold-up etc. Therefore it is requisite for the modern digital design to have modified architecture to meet the required goal. We will recommend here modified scrambler design which is perfectly suitable for any industrial design.
