The IEEE ISSPIT 2015 is the fifteenth in a series of international symposia that aims to cover most of the aspects in the fields of signal processing and information technology. Sessions will include tutorials in addition to presentations on new research results. Papers describing original work are invited in any of the areas listed below. Accepted papers will be published in the Proceedings of IEEE ISSPIT 2015 and will be available via IEEE Xplore. Acceptance will be based on quality, relevance, and originality. Contest for Best Paper Award will be held and award will be given.