Results 151 to 160 of about 6,838 (186)

Analysis of Cell Capacity in FDD-LTE Network

2012 8th International Conference on Wireless Communications, Networking and Mobile Computing, 2012
With the introduction of technologies such as OFDM， MIMO and higher order modulation，it's more complex in capacity analysis in LTE network. This paper focuses on cell capacity in FDD-LTE network. Firstly, a foundation of the theoretical upper bound on capacity will be established followed by the constraints of overhead channels.
Mingqiang Yuan, Xinzhou Cheng
openaire   +1 more source

Control Channels Performance Evaluation with the Coexistence of TD-LTE and LTE-FDD

2013 IEEE 78th Vehicular Technology Conference (VTC Fall), 2013
Coexistence research for LTE systems is indispensable to ensure that the time division duplex (TDD) Long Term evolution (LTE) system can coexist with the frequency division duplex (FDD) LTE system operating at the adjacent frequency band within the same geographical area.
Yinshan Liu, Xiaofeng Zhong, Jing Wang, Yang Lan, Atsushi Harada   +4 more
openaire   +1 more source

IDFT-VFDM for LTE FDD-NR SUL Co-existence

2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), 2019
In the paper, an inverse discrete Fourier transform-based Vandermonde-subspace frequency division multiplexing (IDFT-VFDM) waveform is proposed for the new radio (NR) supplementary uplink (SUL) to share the same time and frequency resources with the frequency division duplex (FDD) based long-term evolution (LTE) network.
Qi Feng, Jiyong Pang, Yinghui He, Qiyu Hu, Guangyao Ding, Rui Yin, Guanding Yu   +6 more
openaire   +1 more source

LTE FDD Physical Random Access Channel Dimensioning and Planning

2012 IEEE Vehicular Technology Conference (VTC Fall), 2012
A User Equipment (UE) can only be selected for uplink transmission if it is time-synchronized, so that the Physical Random Access Channel (PRACH) becomes a key factor between non-synchronized UEs and the orthogonal LTE uplink access scheme. An appropriate design is essential to provide frequent enough random access opportunities and an accurate UE ...
Carlos Úbeda, Salvador Pedraza, Miguel Regueira, Javier Romero   +3 more
openaire   +1 more source

Incremental bit rates in FDD networks for LTE advanced over LTE

2016 IEEE 7th Annual Ubiquitous Computing, Electronics & Mobile Communication Conference (UEMCON), 2016
Long Term Evolution (LTE) Networks are being planned to be upgraded to LTE Advanced along with increasing availability of Release 10 User Equipment (UEs) and Spectrum Availability for Carrier Aggregation. LTE Advanced brings a major step increase in Down Link and Uplink Throughputs and related spectral efficiencies. This paper explains the evolution of
openaire   +1 more source

Coexistence studies for LTE-FDD with TD-LTE in the band 2500-2690 MHz

IET International Conference on Communication Technology and Application (ICCTA 2011), 2011
The frequency band 2500-2690 MHz partly being planned for TD-LTE system in China draws more and more attention especially for total spectrum planning. Therefore, Studies on the technical issues associated with mixed TDD/FDD frequency arrangements band are carried out by different countries and international organizations.
null Biao Huang, null Haifeng Tan, null Wen Wei, null Jian Fang, null Na Zheng   +4 more
openaire   +1 more source

Receiver desensitization in Envelope Tracking PA based FDD LTE transceivers

2014 IEEE 11th International Multi-Conference on Systems, Signals & Devices (SSD14), 2014
This paper analyses the issue of receiver desensitization, due to the interaction with the transmitter in Envelope Tracking (ET) based FDD transceivers. The purpose of the study is to assess the possible trade-offs between the several system parameters, the implementation constraints and the system performance.
CIDRONALI, ALESSANDRO, MADDIO, STEFANO, COLLODI, GIOVANNI, MANES, GIANFRANCO   +3 more
openaire   +2 more sources

UL Performance Evaluation of Relay Enhanced FDD LTE-Advanced Networks

2011 7th International Conference on Wireless Communications, Networking and Mobile Computing, 2011
Long Term Evolution-Advanced (LTE-A) has been recently agreed by the 3rd Generation Partnership Project (3GPP) as the next evolution of LTE. Relay, which could enhance the coverage and increase the data rates in a cost efficient manner, has been taken as a promising key technique in the LTE-A network to meet its demanding requirement.
Wei Hong, Jing Han, Haiming Wang
openaire   +1 more source

Verification of OFDM error floor in time-dispersive LTE FDD DL channel

2014 4th International Conference on Wireless Communications, Vehicular Technology, Information Theory and Aerospace & Electronic Systems (VITAE), 2014
In this paper, the state-of-the-art laboratory environment is presented that is aimed for experimental verification of the earlier obtained analytical OFDM error floor model but now in concrete LTE FDD downlink channel conditions, which are for this purpose hardware and software simulated in the Communications Systems Laboratory of the University of ...
Lipovac, Adriana, Lipovac, Vladimir, Hamza, Mirza   +2 more
openaire   +2 more sources

Power Allocation-Based Adjacent Channel Interference Reduction for Coexisting TD-LTE and LTE-FDD Networks

2013 IEEE 77th Vehicular Technology Conference (VTC Spring), 2013
In Long Term Evolution (LTE) networks, two operators might deploy their networks based on frequency division multiplexing (FDD) and time division multiplexing (TDD) in the same geographical area utilizing adjacent frequency bands. In this kind of an environment, the mutual interference, also called adjacent channel interference (ACI), caused by the ...
Yang Lan, Atsushi Harada
openaire   +1 more source