Journal ArticleDOI
LTE-advanced: next-generation wireless broadband technology [Invited Paper]
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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
A 6th order wideband active-RC LPF for LTE application
TL;DR: In this article, a low power, highly linear active RC filter is presented, which is synthesized from a low pass 6 order Chebyshev RLC ladder, and exhibits a reconfigurable bandwidth (10 MHz, 50 MHz).
Posted Content
A Survey on Social-Physical Sensing.
TL;DR: Social-Physical Sensing (SPS) as discussed by the authors is an emerging sensing paradigm that tightly integrates social and physical sensors at an unprecedented scale, and the vision of SPS centers on mitigating the individual weaknesses of physical and social sensing while exploiting their collective strengths in reconstructing the "state of the world", both physically and socially.
Proceedings ArticleDOI
Effects of Mutual Coupling on Lattice Reduction-Aided Millimeter Wave Hybrid Beamforming
Denisa Prisiceanu,K. Satyanarayana,Mohammed El-Hajjar,Ping-Heng Kuo,Alain Mourad,Lajos Hanzo +5 more
TL;DR: It is demonstrated that the mutual coupling affects the spatial correlation of the channels between the different antennas depending on the distance between the antenna elements, which has a direct effect on the achievable rate as well as bit error ratio (BER) performance of the system.
DissertationDOI
Resource allocation in heterogeneous networks using game theory
TL;DR: This thesis investigates the application of game theoretic approaches in distributed solutions to resource allocation problems in wireless networks using a noncooperative game theoretical model and investigates some fundamental problems in the spectrum-sharing based heterogeneous networks, and provides practical and distributed algorithms to solve a series of resource allocation issues.
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.