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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.
Abstract: Based on the bestseller "3G Evolution - HSPA and LTE for mobile broadband" and reflecting the ongoing success of LTE throughout the world, this book focuses on LTE with full updates including LTE-Advanced to provide a complete picture of the LTE system. Overview and detailed explanations are given for the latest LTE standards for radio interface architecture, the physical layer, access procedures, broadcast, relaying, spectrum and RF characteristics, and system performance. Key technologies presented include multi-carrier transmission, advanced single-carrier transmission, advanced receivers, OFDM, MIMO and adaptive antenna solutions, advanced radio resource management and protocols, and different radio network architectures. Their role and use in the context of mobile broadband access in general is explained. Both a high-level overview and more detailed step-by-step explanations of the LTE/LTE-Advanced implementation are given. An overview of other related systems such as GSM/EDGE, HSPA, CDMA2000, and WIMAX is also provided. This book is a 'must-have' resource for engineers and other professionals in the telecommunications industry, working with cellular or wireless broadband technologies, giving an understanding of how to utilize the new technology in order to stay ahead of the competition. The authors of the book all work at Ericsson Research and have been deeply involved in 3G and 4G development and standardisation since the early days of 3G research. They are leading experts in the field and are today still actively contributing to the standardisation of LTE within 3GPP. Includes full details of the latest additions to the LTE Radio Access standards and technologies up to and including 3GPP Release 10Clear explanations of the role of the underlying technologies for LTE, including OFDM and MIMO Full coverage of LTE-Advanced, including LTE carrier aggregation, extended multi-antenna transmission, relaying functionality and heterogeneous deploymentsLTE radio interface architecture, physical layer, access procedures, MBMS, RF characteristics and system performance covered in detail
Citations
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Proceedings ArticleDOI
10 May 2015
TL;DR: These ideas are developed, using as examples some modern digital communications and broadcast modulation formats and an experimental testbed, to develop Commensal Radar.
Abstract: Commensal Radar has been proposed as a means of addressing the spectrum congestion problem. It may be defined as a passive bistatic radar (PBR) in which the communications, broadcast or radionavigation waveform is designed not only so that it fulfils its primary purpose, but also so that its properties are in some sense optimized as radar signals. This paper develops these ideas, using as examples some modern digital communications and broadcast modulation formats and an experimental testbed.

9 citations


Cites background or methods from "4G: LTE/LTE-Advanced for Mobile Bro..."

  • ...Each contains 12 subcarriers with 15kHz fixed spacing and either 6 or 7 OFDM symbols (depending on the length of the cyclic prefix used); a single subcarrier and one OFDM symbol define what is termed Resource Element (RE) which is the smallest information unit of LTE [22,24]....

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  • ...LTE uses various modulation formats depending on the type of information transmitted and the quality of the wireless channel with QPSK, 16QAM and 64QAM defined in the standard [24]....

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Proceedings ArticleDOI
31 Dec 2012
TL;DR: The results show that NLoS backhaul has obvious gain over donor-UE channel and can be good enough to support relay data forwarding and rules of thumb for NLoS relay deployment are identified that can help to minimize the diffraction loss or to utilize the strong reflections to improve the channel quality.
Abstract: Relay technologies have been standardized in 3GPP long term evolution (LTE), and can be a useful tool for coverage extension in diverse deployments. The backhaul channel between the relay and its donor eNodeB is essential to the end-to-end relay performance. Recently there has been an increased interest in deployments with non-line-of-sight (NLoS) backhaul channel conditions. In this paper, the NLoS backhaul channel quality has been measured in the real field, and the results show that NLoS backhaul has obvious gain over donor-UE channel and can be good enough to support relay data forwarding. Rules of thumb for NLoS relay deployment are identified that can help to minimize the diffraction loss or to utilize the strong reflections to improve the channel quality.

9 citations

Patent
20 Jul 2017
TL;DR: In this article, a user equipment (UE) may transmit a control message during a special subframe of a radio frame, or the UE may determine a payload size based on a number of bits associated with information to be sent in the control message.
Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may transmit a control message during a special subframe of a radio frame. The UE may determine a payload size of the control message according to a radio resource configuration, or the UE may determine a payload size based on a number of bits associated with information to be sent in the control message. The UE may identify uplink resources of the special subframe to use for the control message based on explicit signaling or implicitly based on information to be sent in the control message. Designated resources for control message transmissions in a special subframe may remain the same or may change in subsequent transmission opportunities. The UE may determine to use the same or different resources of a special subframe in a subsequent transmission opportunity depending on when the UE receives downlink messages.

9 citations

Posted Content
TL;DR: In this paper, the authors investigated the statistical QoS provisioning in next generation heterogeneous mobile cellular networks, where any active entity of the cellular network is regarded as a queuing system, whose statistical quality of service requirements depend on the specific application.
Abstract: In this paper, statistical Quality of Service provisioning in next generation heterogeneous mobile cellular networks is investigated. To this aim, any active entity of the cellular network is regarded as a queuing system, whose statistical QoS requirements depend on the specific application. In this context, by quantifying the performance in terms of effective capacity, we introduce a lower bound for the system performance that facilitates an efficient analysis. We exploit this analytical framework to give insights about the possible improvement of the statistical QoS experienced by the users if the current heterogeneous cellular network architecture migrates from a Half Duplex to a Full Duplex mode of operation. Numerical results and analysis are provided, where the network is modeled as a Matern point processes with a hard core distance. The results demonstrate the accuracy and computational efficiency of the proposed scheme, especially in large scale wireless systems.

9 citations

Patent
12 Mar 2013
TL;DR: In this paper, an apparatus and method for capturing images in visible light as well as other radiation wavelengths was described for imaging in visible and visible light, including a plurality of apertures arranged in a diffraction coded array pattern with opaque material blocking array elements.
Abstract: An apparatus and method are described for capturing images in visible light as well as other radiation wavelengths. In one embodiment, the apparatus comprises: a diffraction coded imaging system including a plurality of apertures arranged in a diffraction coded array pattern with opaque material blocking array elements not containing apertures; and a light- or radiation-sensitive sensor coupled to the diffraction coded imaging system array and positioned at a specified distance behind the diffraction coded imaging system array, the radiation-sensitive sensor configured to sense light or radiation transmitted and diffracted through the apertures in the diffraction coded imaging system array.

9 citations