White Space Communication Systems: An Overview of Regulation, Standardization and Trial
نویسنده
چکیده
This paper summarizes the current status of regulations, standardization efforts and trials around the world regarding white space (WS) communications, especially television band WS (TVWS). After defining WS communication systems configurations and function and the categories of white space database, the TVWS regulations in United States, United Kingdom, and Japan are summarized. Then regarding status of standardization for TVWS devices, IEEE 802 and IEEE 1900 standards are summarized. Finally ongoing pilot projects and trials of WS communications in the world are summarized, and trends and future direction of research on WS communication systems are summarized. key words: white space, IEEE, cognitive radio, database, standardization
منابع مشابه
Operational Challenges for Emerging Cognitive Radio Technologies - Wireless Devices Utilizing TV White Spaces
Cognitive radios are finally emerging in the form of White Space devices capable of accessing spectral resources allocated for communication systems but not actually in use. Temporal and geographical information on existence of White Space is obtained from dedicated database through Internet access. In this paper, technological advancements enabling commercial utilization of wireless White Spac...
متن کاملA short overview of the electrical machines control based on Flatness-technique
Optimal linear controllers and high computational non-linear controllers are normally applied to control the nonlinear systems. Flatness control method is a control technique for linear systems as well as nonlinear systems by static and dynamic feedback namely as endogenous dynamic feedback. This method takes into account the non-linear behavior of the process while preventing complicated compu...
متن کاملPlanning in a cross dock network with an operational scheduling overview
Nowadays, cross docking plays an important role in the supply chain networks especially in transportation systems. According to the cross dock system advantages such as reducing transportation costs, lead times, and inventories, scheduling in a cross-dock center would be more complicated by increasing the number of suppliers, customers and product types. Considering the cross dock limited capac...
متن کاملUrban underground development an overview of historical underground cities in Iran
The increasing rate of urbanization and rate of population growth over the 20th century has led to various problems such as traffic congestion, air pollution, and lack of open and green spaces that have affected the cities and their citizen's life. This condition has led to increasing demands for more land use, homes, and work places, more public transport and mass transit systems and modern in...
متن کاملCognitive Emotion Regulation in Aged People: Standardization of Cognitive Emotion Regulation Questionnaire in Iran
Objectives: Emotional regulation refers to strategies that reduce, maintain or increase an emotion in people. The purpose of this study is to standard the Cognitive Emotion Regulation Questionnaire in Tehran aged population. Methods: The sample was selected randomly from 20 Jahandidhgan associations and consisted of 500 aged people from whom 338 people remained till the end of study. In orde...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- IEICE Transactions
دوره 97-B شماره
صفحات -
تاریخ انتشار 2014