Results 21 to 30 of about 16,098 (206)

Partial Fractional Fourier Transform (PFrFT)-MIMO-OFDM for Known Underwater Acoustic Communication Channels

open access: yesInformation, 2021
Communication over doubly selective channels (both time and frequency selective) suffers from significant intercarrier interference (ICI). This problem is severe in underwater acoustic communications.
Yixin Chen   +2 more
doaj   +1 more source

Pedestrians effects on indoor MIMO-OFDM channel capacity [PDF]

open access: yes, 2009
Temporal variations caused by pedestrian movement can significantly affect the channel capacity of indoor MIMOOFDM wireless systems. This paper compares systematic measurements of MIMO-OFDM channel capacity in presence of pedestrians with predicted MIMO ...
Das Gupta, Jishu, Ziri-Castro, Karla
core   +2 more sources

Implementasi Sistem Komunikasi Nirkabel OFDM Berbasis Software Defined Radio (SDR)

open access: yesJurnal Nasional Teknik Elektro dan Teknologi Informasi, 2018
Nowadays, wireless communication technology is developing rapidly. However, this technology still has some weaknesses, e.g. large bandwidth requirement and multipath fading. To overcome these weaknesses, MIMO OFDM technique is needed.
Ida Anisah   +3 more
doaj   +1 more source

Performance Analysis of MIMO-OFDM System Using Predistortion Neural Network with Convolutional Coding Addition to Reduce SDR-Based HPA Nonlinearity

open access: yesEmitter: International Journal of Engineering Technology, 2023
In recent years, the development of communication technology has advanced at an accelerated rate. Communication technologies such as 4G, 5G, Wi-Fi 5 (802.11ac), and Wi-Fi 6 (802.11ax) are extensively used today due to their excellent system quality and ...
Melki Mario Gulo   +2 more
doaj   +1 more source

Bootstrap frequency equalisation for MIMO wireless systems [PDF]

open access: yes, 2003
The paper reports on a new class of equalisation/detection for wideband multiple input-multiple output (MIMO) communications systems. The proposed scheme is somewhat akin to a multi-carrier MIMO system, and more precisely, builds upon a single carrier ...
Fletcher, PN   +4 more
core   +2 more sources

Soft-Decision-Driven Channel Estimation for Pipelined Turbo Receivers [PDF]

open access: yes, 1999
We consider channel estimation specific to turbo equalization for multiple-input multiple-output (MIMO) wireless communication. We develop a soft-decision-driven sequential algorithm geared to the pipelined turbo equalizer architecture operating on ...
Yoon, Daejung, Moon, Jaekyun
core   +2 more sources

Duality of antennas and subcarriers in massive MIMO-OFDM downlink system [PDF]

open access: yes, 2015
Massive multiple-input-multiple-output (MIMO) can significantly outperform conventional MIMO in terms of spectrum efficiency and link reliability. For massive MIMO, there are still theoretical and practical issues that have to be addressed.
Bannour, Ahmed, Sun, Yichuang
core   +2 more sources

Effect of pedestrian movement on MIMO-OFDM channel capacity in an indoor environment [PDF]

open access: yes, 2009
Effects of pedestrian movement on multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) channel capacity have been investigated using experiment and simulation. The experiment was conducted at 5.2 GHz by a MIMO-OFDM packet
Das Gupta, Jishu   +2 more
core   +2 more sources

MIMO-OFDM Based Energy Harvesting Cooperative Communications Using Coalitional Game Algorithm [PDF]

open access: yes, 2017
This document is the Accepted Manuscript version. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or ...
Bannour, Ahmed   +2 more
core   +2 more sources

Channel Estimation for MIMO-OFDM Systems

open access: yesIndian Journal of Science and Technology, 2015
Channel estimation is a very important process in the operation of MIMO-OFDM systems, as it is vital for accurately estimating the Channel Impulse Response (CIR) of the channel under various conditions. As such, it is useful to have a Simulink simulation to model the behavior of the channel estimation process in a MIMO-OFDM system, in order to study ...
Shahid Manzoor   +2 more
openaire   +1 more source

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