Journal of Signal and Information Processing, 2011, 2, 1-10 1 doi:10.4236/jsip.2011.21001 Published Online February 2011 (http://www.SciRP.org/journal/jsip) An Efficient Noise Generator for Validation of Channels Equalizers Nihar Panda1, Siba P. Panigrahi1, Sasmita Kumari Padhy2 1Electrical Engineering, Konark Institute of Science & Technology, Bhubaneswar, Orissa, India; 2ITER, SOA University, Bhu- baneswar, India Email:
[email protected] Received December 10th, 2010; revised January 11th, 2011; accepted February 18th, 2011 ABSTRACT This paper develops an efficient pseudo-random number generator for validation of digital communication channels and secure disc. Drives. Simulation results validates the effectiveness of the random number generator. Keywords: Digital Communication, Channel Equalization 1. Introduction encryption keys, and so forth, that is, loss of security. Physical entropy sources are used to initialize genera- Digital data while transmission over communication chan- tors for cryptographic random number at every power up, nels becomes corrupted because of Inter Symbol Inter- and at special requests, like at reinitializing the firmware, ference (ISI), Co-Channel Interference (CCI), multi- or before generating long used cryptographic keys. Seed- path-fading etc. All the parameters that make a data cor- ing with physical values that can not be predicted makes rupted are known as noise. Extraction of transmitted data a cryptographic random number generator to supply mitigating this noise is known as equalization. Details pseudorandom sequences, with negligible probability of about the algorithms used in the channel equalization repetition. Correspondingly generated secure random se- filters can be found in [1,2]. However in order to validate quences this way needs no secure protected storage for an equalizer, the same need to be tested in presence of a keys or for the internal state of the generator, therefore it noise or random number generator.