Journal ArticleDOI
LTE-advanced: next-generation wireless broadband technology [Invited Paper]
Reads0
Chats0
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
More filters
Journal ArticleDOI
An Efficient IR-HARQ Power Allocation for Relay-Aided Cellular Networks
P. Mangayarkarasi,J. Raja +1 more
TL;DR: An energy-efficient incremental redundancy-hybrid automatic repeat request (IR-HARQ) power allocation scheme to improve the reliability of the network by improving the overall network throughput is proposed and results show that the proposed IR-HarQ power allocation achieves full channel capacity with average transmission delay and maintains good throughput under less power consumption.
Journal Article
Coordinated Multi-Point Scheme Based On Channel State Information in MIMO-OFDM System
TL;DR: It is shown that the proposed scheme can reduce the ICI with fewer resources by using channel state information (CSI) smartly and more efficiently than conventional techniques.
Dissertation
Push-Pull Based High Efficiency and High Power Broadband Power Amplifiers for Wireless Base Stations
TL;DR: This work focuses on reducing the redundancy of power amplifiers in communication base stations while maintaining high back-off efficiency and proposes a new approach for designing high power DPAs with extended bandwidth.
Journal ArticleDOI
Required Specification Analysis of CPRI Link of 4G Mobile Networks for Using WDM-PON Transmission
TL;DR: The required specification of WDM-PON for the CPRI link of the 4G LTE-Advanced base station composed of DU and RU is analyzed to set a target goal of the development of WDBN system for 4G mobile networks.
References
More filters
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.