Journal ArticleDOI
LTE-advanced: next-generation wireless broadband technology [Invited Paper]
TLDR
An overview of the techniques being considered for LTE Release 10 (aka LTEAdvanced) is discussed, which includes bandwidth extension via carrier aggregation to support deployment bandwidths up to 100 MHz, downlink spatial multiplexing including single-cell multi-user multiple-input multiple-output transmission and coordinated multi point transmission, and heterogeneous networks with emphasis on Type 1 and Type 2 relays.Abstract:
LTE Release 8 is one of the primary broadband technologies based on OFDM, which is currently being commercialized. LTE Release 8, which is mainly deployed in a macro/microcell layout, provides improved system capacity and coverage, high peak data rates, low latency, reduced operating costs, multi-antenna support, flexible bandwidth operation and seamless integration with existing systems. LTE-Advanced (also known as LTE Release 10) significantly enhances the existing LTE Release 8 and supports much higher peak rates, higher throughput and coverage, and lower latencies, resulting in a better user experience. Additionally, LTE Release 10 will support heterogeneous deployments where low-power nodes comprising picocells, femtocells, relays, remote radio heads, and so on are placed in a macrocell layout. The LTE-Advanced features enable one to meet or exceed IMT-Advanced requirements. It may also be noted that LTE Release 9 provides some minor enhancement to LTE Release 8 with respect to the air interface, and includes features like dual-layer beamforming and time-difference- of-arrival-based location techniques. In this article an overview of the techniques being considered for LTE Release 10 (aka LTEAdvanced) is discussed. This includes bandwidth extension via carrier aggregation to support deployment bandwidths up to 100 MHz, downlink spatial multiplexing including single-cell multi-user multiple-input multiple-output transmission and coordinated multi point transmission, uplink spatial multiplexing including extension to four-layer MIMO, and heterogeneous networks with emphasis on Type 1 and Type 2 relays. Finally, the performance of LTEAdvanced using IMT-A scenarios is presented and compared against IMT-A targets for full buffer and bursty traffic model.read more
Citations
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Journal ArticleDOI
On energy harvesting for augmented tags
Dahmane Allane,Dahmane Allane,Yvan Duroc,Gianfranco Andia Vera,Rachida Touhami,Smail Tedjini +5 more
TL;DR: The harmonic signals generated by UHF RFID chips, usually considered as spurious effects and unused, are exploited and harvested to feed a supplementary circuitry associated with a passive RFID tag.
Journal ArticleDOI
Signal detection enhancement in LTE-A downlink physical layer using OSIC-based K -Best algorithm
TL;DR: The proposed OSIC-based K -Best algorithm is characterized by low complexity by dividing a large MIMO detection problem into small sub-problems and is divided into several basic building blocks with small dimension to reduce complexity.
MonographDOI
From Orthogonal to Non-orthogonal Multiple Access: Energy- and Spectrum-Efficient Resource Allocation
TL;DR: The rapid pace of innovations in information and communication technology (ICT) industry over the past decade has greatly improved people’s mobile communication experience and this, in turn, has escalated the number of people using mobile devices.
eICIC 가 적용된 이종 셀룰러 망을 위한 부하 분산 기법
TL;DR: It is confirmed that almost blank subframe (ABS) and enhanced inter-cell interference coordination (eICIC) combined with eICIC will improve cell range expansion and efficiency in the coming generation of smart grids.
Journal ArticleDOI
A green radio resource allocation scheme for LTE-A downlink systems with CoMP transmission
TL;DR: A green radio resource allocation (GRRA) scheme for LTE-advanced downlink systems with coordinated multi-point (CoMP) transmission to support multimedia traffic can effectively save transmission power, enhance spectrum efficiency, and guarantee quality-of-service requirements.
References
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Proceedings ArticleDOI
Overview of UMTS Air-Interface Evolution
Brian K. Classon,Kevin L. Baum,Vijay Nangia,R. Love,Yakun Sun,R. Nory,K. Stewart,Arunabha Ghosh,Rapeepat Ratasuk,Weimin Xiao,Jun Tan +10 more
TL;DR: A preliminary look at the air interface for Evolved UTRA (E-UTRA) and associated key technologies required to reach its design objectives are provided.
Proceedings ArticleDOI
On UMTS-LTE Physical Uplink Shared and Control Channels
TL;DR: The proposed channel estimation technique is shown to have significant gains in performance compared to other well known channel estimation techniques such as the maximum-likelihood (ML) and the inverse fast Fourier transform (IFFT) channel estimation methods.