Results 291 to 300 of about 1,869,227 (335)

Advanced carrier aggregation techniques for multi-carrier ultra-dense networks

IEEE Communications Magazine, 2016
An emerging scenario to be considered for further evolution of Long-Term Evolution and beyond is a multi-carrier ultra-dense network (MC-UDN). Advanced carrier aggregation (ACA) techniques, such as carrier switching, lightweight carriers, opportunistic transmissions, and adaptive resource optimization schemes, provide important means for the MC-UDN to ...
Jialing Liu, Weimin Xiao
openaire   +1 more source

21.3 A Reconfigurable Bidirectional 28/37/39GHz Front-End Supporting MIMO-TDD, Carrier Aggregation TDD and FDD/Full-Duplex with Self-Interference Cancellation in Digital and Fully Connected Hybrid Beamformers

IEEE International Solid-State Circuits Conference, 2019
This paper presents a 28/37/39GHz front-end applicable to beyond-5G wireless networks. It features three key contributions. First, a fully connected (FC) transmitter architecture is introduced for hybrid beamforming (HBF); it is shown that the power ...
Susnata Mondal, Rahul Singh, J. Paramesh
semanticscholar   +1 more source

Handover methods in carrier aggregation environment

IET International Conference on Communication Technology and Application (ICCTA 2011), 2011
Carrier aggregation is one of important technologies to improve the performance of LTE-A. When carrier aggregation is conducted, UE will have a set of serving cells (Component Carrier, CC), which introduces some new problems during handover decision process.
null Mingju Li, null Liu Liu, null Xiaoming She, null Lan Chen   +3 more
openaire   +1 more source

Component Carrier Management for Carrier Aggregation in LTE-Advanced System

2011 IEEE 73rd Vehicular Technology Conference (VTC Spring), 2011
This paper focuses on investigating appropriate management of Component Carriers(CCs) in carrier aggregation( CA) system, which is identified as one of the most distinct features of 4G systems including Long Term Evolution- Advanced (LTE-A). An LTE-A user equipment (UE) is allowed to concurrently utilize multiple carriers, which leads to scalable ...
Liu Liu, Mingju Li, Juejia Zhou, Xiaoming She, Lan Chen, Yuta Sagae, Mikio Iwamura   +6 more
openaire   +1 more source

A Dual-Band Dual-Output Power Amplifier for Carrier Aggregation

IEEE transactions on microwave theory and techniques, 2019
This paper demonstrates a high-efficiency dual-band RF power amplifier (PA) for sub-6 GHz 5G carrier aggregation. The dual-band PA is tested with modulated signals generated by a new algorithm designed to provide realistic waveforms for carrier ...
Tommaso A. Cappello, Allison Duh, T. Barton, Z. Popovic   +3 more
semanticscholar   +1 more source

21.4 An LTE-A Multimode Multiband RF Transceiver with 4RX/2TX Inter-Band Carrier Aggregation, 2-Carrier 4×4 MIMO with 256QAM and HPUE Capability in 28nm CMOS

IEEE International Solid-State Circuits Conference, 2019
With the increasing popularity of social media, artificial intelligence (AI) and mobile computing, higher data-rate wireless communication is required. In the existing limited 4G spectrum, 3GPP standards have defined several methods to increase the data ...
Chih-Chun Tang, Yi-Bin Lee, C. Sun, Cheng-Chieh Lin, Jin-Siang Syu, Min-Hua Wu, YangChuan Chen, Tzu-Chan Chueh, C. Bryant, M. Collados, Mohammed Hassan, J. Ramos, Yu-Lin Hsieh, Hsinhung Chen, Xiaochuan Guo, Hsinhua Chen, C. Cao, D. Li, J. Strange, Caiyi Wang, G. Dehng   +20 more
semanticscholar   +1 more source

Iterative smoothing filtering schemes by using clipping noise-assisted signals for PAPR reduction in OFDM-based carrier aggregation systems

IET Communications, 2019
Aggregating a lot of subcarriers will generate high peak-to-average power ratio (PAPR) which makes the overall system performance degradation. Among the existing PAPR reduction methods for orthogonal frequency-division multiplexing (OFDM)-based systems ...
Shu-Ping Lin, Yung-Fang Chen, S. Tseng
semanticscholar   +1 more source

Neighbor Carrier Signal Strength Estimation for Carrier Aggregation in LTE-A

2010 WASE International Conference on Information Engineering, 2010
In Advanced Long Time Evolution (LTE-A) mobile wireless communication system, the Carrier Aggregation (CA) technique feature was introduced to support large transmission bandwidth. But due to the capacity limit of UE, to measure all component carriers with low latency and cost has been a challenge.
Peng Yuan, Dengkun Xiao, Jing Han, Xiaojun Jing   +3 more
openaire   +1 more source

Dynamic Carrier Aggregation in 5G network scenario

2015 International Conference on Computing and Network Communications (CoCoNet), 2015
Carrier Aggregation (CA) is a key mechanism in order to increase per user and system throughput. Current 3GPP specifications are discussing upto 5 component carrier aggregation. Aggregation of Licensed and unlicensed bands are also under discussion as possible means of increasing available bandwidth.
null Vidhya R, null Karthik P
openaire   +1 more source

Carrier-Aggregated Timing Estimation for Radio Positioning

2019 IEEE 89th Vehicular Technology Conference (VTC2019-Spring), 2019
Next-generation wireless systems will provide services requiring accurate position information of mobile users, as e.g. in vehicular and industrial communication scenarios. Accuracy in the order of tens of centimeters will be required, which cannot be provided by standard radio positioning techniques used in legacy systems.
Wen Xu, Saeed Shojaee, Konstantinos Manolakis   +2 more
openaire   +1 more source