Journal ArticleDOI
The requirements, challenges, and technologies for 5G of terrestrial mobile telecommunication
Shanzhi Chen,Jian Zhao +1 more
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In this article, the authors summarize the 5G mobile communication requirements and challenges and present a potential step change for the evolution toward 5G, which shows that macro-local coexisting and coordinating paths will replace one macrodominated path as in 4G and before.Abstract:
In this article, we summarize the 5G mobile communication requirements and challenges. First, essential requirements for 5G are pointed out, including higher traffic volume, indoor or hotspot traffic, and spectrum, energy, and cost efficiency. Along with these changes of requirements, we present a potential step change for the evolution toward 5G, which shows that macro-local coexisting and coordinating paths will replace one macro-dominated path as in 4G and before. We hereafter discuss emerging technologies for 5G within international mobile telecommunications. Challenges and directions in hardware, including integrated circuits and passive components, are also discussed. Finally, a whole picture for the evolution to 5G is predicted and presented.read more
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OTFS - Orthogonal Time Frequency Space.
TL;DR: A new 2D modulation technique called OTFS (Orthogonal Time Frequency & Space) that transforms information carried in the Delay-Doppler coordinate system to the familiar time-frequency domain utilized by traditional modulation schemes such as OFDM, CDMA and TDMA, thus realizing the full promise of Massive MIMO throughput gains even in challenging 5G deployment settings.
Proceedings ArticleDOI
A small microstrip patch antenna for future 5G applications
TL;DR: In this paper geometry of the antenna and various parameters such as return loss plot, gain plot, radiation pattern plot and VSWR plot are presented & discussed and they are in good match with simulated results.
Journal ArticleDOI
Analysis and Design of Commutation-Based Circulator-Receivers for Integrated Full-Duplex Wireless
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Journal ArticleDOI
How Many Small Cells Can be Turned Off via Vertical Offloading Under a Separation Architecture
TL;DR: In this paper, two sleeping schemes (i.e., random and repulsive schemes) with vertical inter-layer offloading are considered, and the expected ratio of sleeping small cells is inversely proportional to the traffic load of small cells.
Posted Content
Effective Capacity of Licensed-Assisted Access in Unlicensed Spectrum for 5G: From Theory to Application
TL;DR: In this paper, the authors developed new theories of the effective capacity to measure LAA under statistical QoS requirements, where a new four-state semi-Markovian model was developed to capture transmission collisions, random backoffs, and lossy wireless channels of LAA in distributed heterogeneous network environments.
References
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Journal ArticleDOI
Device-to-device communication as an underlay to LTE-advanced networks
TL;DR: Device-to-device (D2D) communication underlaying a 3GPP LTE-Advanced cellular network is studied as an enabler of local services with limited interference impact on the primary cellular network.
Book
4G: LTE/LTE-Advanced for Mobile Broadband
TL;DR: In this article, the authors focus on LTE with full updates including LTE-Advanced to provide a complete picture of the LTE system, including the physical layer, access procedures, broadcast, relaying, spectrum and RF characteristics, and system performance.
Proceedings ArticleDOI
Practical, real-time, full duplex wireless
Mayank Jain,Jung-Il Choi,Taemin Kim,Dinesh Bharadia,Siddharth Seth,Kannan Srinivasan,Philip Levis,Sachin Katti,Prasun Sinha +8 more
TL;DR: Experimental results show that a re- design of the wireless network stack to exploit full duplex capability can result in significant improvements in network performance.
Book
Mobile Communications Engineering
TL;DR: In this article, the authors describe the characteristics of mobile radio signals and apply statistical communication theory to propagation and received signal characteristics, and provide a discussion of system performance and how to evaluate a new system.
Journal ArticleDOI
Encoding many channels on the same frequency through radio vorticity: first experimental test
Fabrizio Tamburini,Elettra Mari,Anna Sponselli,Bo Thid,Bo Thid,Antonio Bianchini,Filippo Romanato +6 more
TL;DR: In this paper, it was shown experimentally that two beams of incoherent radio waves, transmitted on the same frequency but encoded in two different orbital angular momentum states, can simultaneously transmit two independent radio channels.