Device-to-device(D2D) communications are now considered as an integral part of future 5G networks which will enable direct communication between user equipment (UE) without unnecessary routing via the network infrastructure. This architecture will RESULT in higher throughputs than conventional cellular networks, but with the increased potential for co-channel interference induced by randomly located cellular and D2D UEs.
標(biāo)簽： Device-to-Device Communications Analysis of
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(biāo)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(biāo)簽： Continuous-Time Front-Ends Digital
上傳時間： 2020-05-27
上傳用戶：shancjb
Use of multiple antennas at both ends of wireless links is the RESULT of the natural progression of more than four decades of evolution of adaptive antenna technology. Recent advances have demonstrated that multiple- input-multiple-output (MIMO) wireless systems can achieve impressive increases in overall system performance.
標(biāo)簽： Technology System MIMO
上傳時間： 2020-05-28
上傳用戶：shancjb
Wireless is one of the most rapidly developing technologies in our time, with dazzling new products and services emerging on an almost daily basis. These developments present enormous challenges for communications engineers, as the demand for increased wireless capacity grows explosively. Indeed, the discipline of wireless communications presents many challenges to designers that arise as a RESULT of the demanding nature of the physical medium and the complexities in the dynamics of the underlying network.
標(biāo)簽： Communications Wireless MIMO
上傳時間： 2020-05-28
上傳用戶：shancjb
Mobile telecommunications emerged as a technological marvel allowing for access to personal and other services, devices, computation and communication, in any place and at any time through effortless plug and play. This brilliant idea became possible as the RESULT of new technologies developed in the areas of computers and communications that were made available and accessible to the user.
標(biāo)簽： Telecommunications Protocols Mobile
上傳時間： 2020-05-30
上傳用戶：shancjb
In the past few decades, a technological revolution has occurred that has changed the way we live in dramatic ways. This technological revolution is the RESULT of the emergence and evolution of a wide variety of new wireless networking tech- nologies. Now people using these technologies are able to access the network and control many applications at will with their handheld devices anywhere, anytime. Although these technologies have made a long lasting impact in the revolution, it has also opened up various challenging issues which are yet to be resolved to make them more efficient and cost-effective.
標(biāo)簽： Next-Generation Technologies Wireless
上傳時間： 2020-05-31
上傳用戶：shancjb
This book is a RESULT of the recent rapid advances in two related technologies: com- munications and computers. Over the past few decades, communication systems have increased in complexity to the point where system design and performance analysis can no longer be conducted without a significant level of computer sup- port. Many of the communication systems of fifty years ago were either power or noise limited. A significant degrading effect in many of these systems was thermal noise, which was modeled using the additive Gaussian noise channel.
標(biāo)簽： Communication Principles Simulation Systems of
上傳時間： 2020-05-31
上傳用戶：shancjb
Commoditization is a serious threat to the telecommunications industry. Most CSPs offer similar services at rates designed to win what has become a price war. As a RESULT, many face decreasing margins and difficulty sustaining differentiation based on prices or products alone. On top of commoditization, CSPs also face competition from OTT providers and an increasingly knowledgeable and demanding customer base. With access to growing amounts of data from an ever-increasing number of sources and devices, today’s empowered, savvy consumers know what they want and expect to get it.
標(biāo)簽： RestoringConnections_IBM_CPL
上傳時間： 2020-06-01
上傳用戶：shancjb
Radio frequency spectrum is a scarce and critical natural resource that is utilized for many services including surveillance, navigation, communication, and broadcast- ing. Recent years have seen tremendous growth in the use of spectrum especially by commercial cellular operators. Ubiquitous use of smartphones and tablets is one of the reasons behind an all-time high utilization of spectrum. As a RESULT, cellular operators are experiencing a shortage of radio spectrum to meet bandwidth demands of users. On the other hand, spectrum measurements have shown that much spectrum not held by cellular operators is underutilized even in dense urban areas. This has motivated shared access to spectrum by secondary systems with no or minimal impact on incumbent systems. Spectrum sharing is a promising approach to solve the problem of spectrum congestion as it allows cellular operators access to more spectrum in order to satisfy the ever-growing bandwidth demands of commercial users.
標(biāo)簽： Spectrum Sharing Between Radars
上傳時間： 2020-06-01
上傳用戶：shancjb
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