Mathematical Problems for Complex Systems

Mathematical Problems for Complex Systems

As most of practical systems have high complexity, complex systems have become a rapidly growing area of mathematics and attracted many researchers. The study of complex systems not only has an important theoretical interest but also is motivated by problems from applied mathematics including physics, chemistry, astronomy, technology, and natural and social sciences. It should be noted that som...

Mathematical Problems for Complex Networks

Mathematical Models and Methods for Complex Systems

channel estimation for mimo-ofdm systems

تخمین دقیق مشخصات کانال در سیستم های مخابراتی یک امر مهم محسوب می گردد. این امر به ویژه در کانال های بیسیم با ‏خاصیت فرکانس گزینی و زمان گزینی شدید، چالش بزرگی است. مقالات متعدد پر از روش های مبتکرانه ای برای طراحی و آنالیز ‏الگوریتم های تخمین کانال است که بیشتر آنها از روش های خاصی استفاده می کنند که یا دارای عملکرد خوب با پیچیدگی ‏محاسباتی بالا هستند و یا با عملکرد نه چندان خوب پیچیدگی پایینی...

Solving mathematical problems using knowledge-based systems

In this paper, a knowledge-based system is developed to teach students in a basic mathematical course how to solve problems. First, the system recognizes handwritten mathematical expressions. Then, it understands the questions, interprets the expressions, and finally, solves the problems. In addition, two mathematical topics are addressed: differentiation and finding a general term in a series ...