WE review the current applications of photonic technologies to Smart Cities. Inspired by the future needs of Smart Cities, WE then propose potential applications of advanced photonic technologies. WE find that photonics already has a major impact on Smart Cities, in terms of smart lighting, sensing, and communication technologies. WE further find that advanced photonic technologies could lead to vastly improved infrastructure, such as smart water‐supply systems. WE conclude by proposing directions for future research that will have the greatest impact on realizing Smart City initiatives.
上傳時間： 2020-05-26
上傳用戶：shancjb
The Internet of Things is considered to be the next big opportunity, and challenge, for the Internet engineering community, users of technology, companies and society as a whole. It involves connecting embedded devices such as sensors, home appliances, WEather stations and even toys to Internet Protocol (IP) based networks. The number of IP-enabled embedded devices is increasing rapidly, and although hard to estimate, will surely outnumber the number of personal computers (PCs) and servers in the future. With the advances made over the past decade in microcontroller,low-poWEr radio, battery and microelectronic technology, the trend in the industry is for smart embedded devices (called smart objects) to become IP-enabled, and an integral part of the latest services on the Internet. These services are no longer cyber, just including data created by humans, but are to become very connected to the physical world around us by including sensor data, the monitoring and control of machines, and other kinds of physical context. WE call this latest frontier of the Internet, consisting of wireless low-poWEr embedded devices, the Wireless Embedded Internet. Applications that this new frontier of the Internet enable are critical to the sustainability, efficiency and safety of society and include home and building automation, healthcare, energy efficiency, smart grids and environmental monitoring to name just a few.
標簽： Embedded Internet Wireless 6LoWPAN The
上傳時間： 2020-05-26
上傳用戶：shancjb
A decade ago, I first wrote that people moved, and networks needed to adapt to the reality that people worked on the go. Of course, in those days, wireless LANs came with a trade-off. Yes, you could use them while moving, but you had to trade a great deal of throughput to get the mobility. Although it was possible to get bits anywhere, even while in motion, those bits came sloWEr. As one of the network engineers I worked with put it, “WE’ve installed switched gigabit Ethernet everywhere on campus, so I don’t understand why you’d want to go back to what is a 25-megabit hub.” He un- derestimated the allure of working on the go.
上傳時間： 2020-05-26
上傳用戶：shancjb
In this paper, WE consider the channel estimation problem in Millimeter wave (mmWave) wireless systems with large antenna arrays. By exploiting the inherent sparse nature of the mmWave channel, WE develop a novel rate-adaptive channel estimation (RACE) algorithm, which can adaptively adjust the number of required channel measurements based on an expected probability of estimation error (PEE).
標簽： Estimation Millimeter Adaptive Approach Channel Systems Rate MIMO Wave for
上傳時間： 2020-05-26
上傳用戶：shancjb
Emerging technologies such as WiFi and WiMAX are profoundly changing the landscape of wireless broadband. As WE evolve into future generation wireless networks, a primary challenge is the support of high data rate, integrated multi- media type traffic over a unified platform. Due to its inherent advantages in high-speed communication, orthogonal frequency division multiplexing (OFDM) has become the modem of choice for a number of high profile wireless systems (e.g., DVB-T, WiFi, WiMAX, Ultra-wideband).
標簽： Broadband Wireless Networks
上傳時間： 2020-05-26
上傳用戶：shancjb
The idea of writing this book entitled “Cognitive Networked Sensing and Big Data” started with the plan to write a briefing book on wireless distributed computing and cognitive sensing. During our research on large-scale cognitive radio network (and its experimental testbed), WE realized that big data played a central role. As a result, the book project reflects this paradigm shift. In the context, sensing roughly is equivalent to “measurement.”
標簽： Cognitive Networked Sensing Data Big and
上傳時間： 2020-05-26
上傳用戶：shancjb
The book you’re holding, physically or electronically, is the result of a very interesting, challenging but also rewarding research project. The research was carried out in different contexts and cooperations but it was centered around the following question: how can WE make the RF transmitters of our modern com- munication systems (WiFi, GSM, LTE, and so on) more flexible and more efficient at the same time.
標簽： Continuous-Time Front-Ends Digital
上傳時間： 2020-05-27
上傳用戶：shancjb
Cooperation is not a natural characteristic attributed to humans. The typical human horizon is focused on short-term gains, which might be due to our instinct-driven subconscious occupying a grander importance than WE dare to admit [1]. Cooperating with other individuals or entities, hoWEver, usually means that short-term losses may translate into long-term gains – something history has proved to hold true but humans for some reason rarely ever understand.
標簽： Communications Cooperative
上傳時間： 2020-05-27
上傳用戶：shancjb
It is commonly accepted today that optical fiber communications have revolutionized telecommunications. Indeed, dramatic changes have been induced in the way WE interact with our relatives, friends, and colleagues: WE retrieve information, WE entertain and educate ourselves, WE buy and sell, WE organize our activities, and so on, in a long list of activities. Optical fiber systems initially alloWEd for a significant curb in the cost of transmission and later on they sparked the process of a major rethinking regarding some, generation-old, telecommunication concepts like the (OSI)-layer definition, the lack of cross-layer dependency, the oversegmentation and overfragmentation of telecommunica- tions networks, and so on.
上傳時間： 2020-05-27
上傳用戶：shancjb
In the preparation of this book, our objective was to provide an advanced understanding of emerging telecommunications systems, their significance, and the anticipated role these systems will play in the future. With the help of our talented associated editors and contributors, WE believe WE have accomplished this. By addressing voice, Internet, traffic management, and future trends, WE feel our readers will be knowledgeable about current and future telecommunications systems.
標簽： CRC Handbook of Modern Telecommunications
上傳時間： 2020-05-27
上傳用戶：shancjb
