Results 141 to 150 of about 2,448 (179)

Analytical Channel Modeling: From MIMO to Extra Large-Scale MIMO

Chinese Journal of Electronics
Shi Jin, Jiachen Tian
exaly   +2 more sources

Large-scale multiuser SM-MIMO versus massive MIMO

2014 Information Theory and Applications Workshop (ITA), 2014
Spatial modulation (SM) is attractive for multi-antenna wireless communications. SM uses multiple transmit antenna elements but only one transmit radio frequency (RF) chain. In SM, in addition to the information bits conveyed through conventional modulation symbols (e.g., QAM), the index of the active transmit antenna also conveys information bits.
T. Lakshmi Narasimhan, Patchava Raviteja, A. Chockalingam   +2 more
openaire   +1 more source

Investigation on Key Technologies in Large-Scale MIMO

Journal of Computer Science and Technology, 2013
Large-scale MIMO (multiple-input multiple-output) systems with numerous low-power antennas can provide better performance in terms of spectrum efficiency, power saving and link reliability than conventional MIMO. For large-scale MIMO, there are several technical issues that need to be practically addressed (e.g., pilot pattern design and low-power ...
Xin Su 0001, Jie Zeng 0001, Liping Rong, Yujun Kuang   +3 more
openaire   +1 more source

Efficient stochastic detector for large-scale MIMO

2016 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2016
In this paper, a low-complexity stochastic belief propagation (BP) detector for large-scale MIMO is first proposed. Its efficient hardware architecture, with parallel pipeline, is presented in detail. Thanks to the stochastic approach, all arithmetic operations of the detector are implemented with simple logic structures.
Junmei Yang, Chuan Zhang 0001, Shugong Xu, Xiaohu You 0001   +3 more
openaire   +1 more source

An Efficient Feedback Compression for Large-Scale MIMO Systems

2014 IEEE 79th Vehicular Technology Conference (VTC Spring), 2014
Large-scale multiple-input multiple-output(MIMO) systems with a large number of antennas at the basestation have drawn considerable interest because of potential ability to achieve high spectral efficiencies. In order to achieve optimal performance of large-scale MIMO systems, the basestation needs to know channel state information (CSI) perfectly.
Byungju Lee, Byonghyo Shim
openaire   +1 more source

Successive interference cancellation for large-scale MIMO OFDM

2015 IEEE International Conference on Electro/Information Technology (EIT), 2015
In this paper, a new low complexity successive interference cancellation (SIC) technique is proposed for a QPSK mapping multiple-input multiple-output (MIMO) spatial multiplexing system based on a Quadratic Programming detector (QP-SIC). The proposed technique uses Log-Likelihood ratio (LLR) for reliability ordering of received symbols, and then ...
Ali A. Elghariani, Michael D. Zoltowski
openaire   +1 more source

Efficient Distributed Processing for Large Scale MIMO Detection

2019 27th European Signal Processing Conference (EUSIPCO), 2019
In large scale multiple-input multiple-output (MIMO), high spectral and energy efficiencies comes at the expense of a high computational complexity baseband processing. Many contributions have been proposed to reduce such complexity using matrix inversion approximation techniques for instance.
Messaoud Ahmed Ouameur, Daniel Massicotte   +1 more
openaire   +1 more source

Antenna Clustering for Distributed Large-Scale MIMO Systems

2014 IEEE International Conference on Internet of Things(iThings), and IEEE Green Computing and Communications (GreenCom) and IEEE Cyber, Physical and Social Computing (CPSCom), 2014
In addition to the advantage of high capacity in conventional multiple input multiple output (MIMO) systems, distributed large scale (DLS) MIMO systems can further enhance energy efficiency and the system performance at the cell edge. Key challenges in DLS-MIMO systems include interference mitigation and complex signal processing in a large number of ...
Ssu-Han Lu, Yan-Gui Chen, Li-Chun Wang 0001   +2 more
openaire   +1 more source

Quadrature spatial modulation for large scale MIMO systems

2017 25th Signal Processing and Communications Applications Conference (SIU), 2017
In this paper, a new multiple-input multiple-output (MIMO) transmission system, which is called space-time quadrature spatial modulation (ST-QSM), and combines quadrature spatial modulation (QSM) with space time block codes (STBCs) in order to achieve second order transmit diversity gain, is proposed.
Zehra Yiggit, Ertugrul Basar
openaire   +1 more source

Robust Large Scale Calibration for Massive MIMO

2015 IEEE Global Communications Conference (GLOBECOM), 2014
In the massive multiple-input multiple-output (MIMO) era, there are hundreds of antenna elements at one single base station (BS). It becomes critical to take full advantage of time-division duplexing (TDD) channel reciprocity to learn the downlink (DL) channel state information (CSI) from the uplink (UL) channel measurements at the BS.
openaire   +1 more source