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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Proceedings ArticleDOI
Highly efficient GaN Doherty power amplifier with 100 MHz signal bandwidth for 3.5 GHz LTE-Advanced application
TL;DR: This paper presents a highly efficient GaN Doherty power amplifier (DPA) with 100 MHz signal bandwidth and 40 dBm average output power for 3.5 GHz LTE-Advanced application.
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Adaptation of hybrid beamformation for the feasible mmWave 5G mobile communication system
TL;DR: A new beamformation strategy that overcomes the limitation of RF beamformation and Baseband beamformation known as Hybrid beamformation (HBF) is presented and very narrow 3dBtransmit antenna beamwidth of almost 12 degree is achieved.
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On relay assignment strategy in wireless cellular environment
TL;DR: Under the new assignment algorithm, not only the original optimal property of ORA is preserved, but also the performance of remaining UEs assigned to RNs is maximized.
Proceedings ArticleDOI
Antenna design for femtocell LTE at frequency 2.3 – 2.4 GHz
TL;DR: In this paper, the femtocell antenna is designed to work at frequency 23-24 GHz for VSWR <2 and have 100 MHz Impedance bandwidth from measurement of S11 parameter shows that the single element antenna has 320 MHZ impedance bandwidth which covers frequency 212-247 GHz
Proceedings ArticleDOI
Statistical analysis of capacity in joint processing coordinated multi-point systems
TL;DR: This paper theoretically evaluate JP CoMP based systems in terms of statistical average of capacity and compares the performance of the two JP schemes with non CoMP scheme.
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
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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.