Results 51 to 60 of about 48,136 (224)
An Improved Multicell MMSE Channel Estimation in a Massive MIMO System
International Journal of Antennas and Propagation, 2014 Massive MIMO is a promising technology to improve both the spectrum efficiency and the energy efficiency. The key problem that impacts the throughput of a massive MIMO system is the pilot contamination due to the nonorthogonality of the pilot sequences ...
Ke Li +3 more
doaj +1 more source
Beam Grouping Based RS Resource Reuse and De-Contamination in Large Scale MIMO Systems
Applied Sciences, 2017 It is well known that large scale multiple-input multiple-output (LS-MIMO) systems are very attractive technology to increase both spectral efficiency (SE) and energy efficiency (EE). However, one of big obstacles to the realization of the LS-MIMO system
Byung Moo Lee, Youngok Kim
doaj +1 more source
Digital Communications and Networks, 2023 In multiuser massive Multiple Input Multiple Output (MIMO) systems, a large amount of antennas are deployed at the Base Station (BS). In this case, the Minimum Mean Square Error (MMSE) detector with soft-output can achieve the near-optimal performance at
Souleymane Berthe +3 more
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Physical Layer Security for Military IoT Links Using MIMO-Beamforming at 60 GHz
Information, 2022 This paper discusses the concept and practicality of internet-of-things (IoT) link security enhancements using multiple-input multiple-output (MIMO) and beamforming solutions at the physical layer of the wireless system.
Ahmed Iyanda Sulyman, Calvin Henggeler
doaj +1 more source
Performance of Spatial Modulation using Measured Real-World Channels
, 2013 In this paper, for the first time real-world channel measurements are used to analyse the performance of spatial modulation (SM), where a full analysis of the average bit error rate performance (ABER) of SM using measured urban correlated and ...
Beach, Mark A. +6 more
core +1 more source
Low-complex channel estimation in extra-large scale MIMO with the spherical wave properties [PDF]
, 2023 Xumin Pu +3 more
openalex +1 more source
Optimal Training Sequences for Large-Scale MIMO-OFDM Systems [PDF]
IEEE Transactions on Signal Processing, 2017 This paper considers the optimal design of training sequences for channel estimation in large-scale multiple-input multiple-output orthogonal frequency-division multiplexing systems. The application scenario of interest is when the number of transmit antennas for the downlink (or the number of receive antennas for the uplink) is large, but not large ...
Zhichao Sheng +3 more
openaire +1 more source
Applied Sciences, 2017 This paper presents a method to determine transmission power based on power amplifier (PA) operations in order to improve the energy efficiency (EE) of a large-scale (LS) Multiple Input Multiple Output (MIMO)-OFDM system, which is a multi-carrier ...
Byung Moo Lee, Youngok Kim
doaj +1 more source
International Journal of Antennas and Propagation, 2021 The tripolarized MIMO system can provide one more degree of freedom and have a more compacted size over a dual-polarized MIMO system, which is attractive for high-capacity wireless communication systems.
Pan Tang +6 more
doaj +1 more source
Low-Complexity Channel Estimation in Large-Scale MIMO using Polynomial Expansion
, 2013 This paper considers pilot-based channel estimation in large-scale multiple-input multiple-output (MIMO) communication systems, also known as "massive MIMO".
Bengtsson, Mats +3 more
core +3 more sources