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A Review on STBC Design with Two Transmit Antennas
2023
International journal of computational and electronics aspects in engineering
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The optimization of 2×2 MIMO systems is therefore receiving renewed interest. ...
Detection schemes that can outperform the conventional Orthogonal Space-Time Block Code (STBC) in real practical situations (imperfect CSI, time-varying fast fading channels, spatially correlated channels ...
For instance, authors in [15] have implemented a new STBC scheme for 2×2 MIMO systems with joint channel estimation and symbol decoding. ...
doi:10.26706/ijceae.4.4.20231105
fatcat:o2ek42hxprd57esrbt3ipi4e2i
Low Complex Standard Conformable Transceiver based on Doppler Spread for DVB-T2 Systems
2021
Journal of Information Systems and Telecommunication
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In order to evaluate the capability of that, we have implemented this scheme for the second-generation terrestrial video broadcasting (DVB-T2) system over different channels. ...
We investigate different antenna diversity concepts, which can be applied to orthogonal frequency division multiplexing (OFDM) systems over highly frequency selective channels. ...
for the MIMO system contained 2 transmit and 2 receive antennas. ...
doi:10.29252/jist.8.32.272
fatcat:2gsofuk3k5avtppoqltwngxg7a
Ordered Successive Interference Cancellation for Maximum Throughput in Multi Stream MIMO using different Modulation Schemes
2016
Indian Journal of Science and Technology
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Objective: In this article performance evaluation of Multi Input Multi Output (MIMO) system using Alamouti and Spatial multiplexing with different modulation schemes is studied and in case of multi stream ...
Methods: In communication systems without any additional bandwidth MIMO offer considerable increase in data throughput and link range. ...
The performance of MIMO system using alamouti coding over different modulation schemes is shown in Figure 3 . Maximum diversity using maximum likelihood is shown in 7 . ...
doi:10.17485/ijst/2016/v9i9/85873
fatcat:p4pjynujznc3fjut5lqdqf3d5m
DATA TRANSMISSION IN MIMO-OFDM TECHNOLOGIES FOR CURRENT AND FUTURE WIRELESS COMMUNICATION SYSTEMS: FROM THEORY TO PRACTICE
2022
Journal of Engineering & Technological Advances
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Space-time block coding (STBC) and space-frequency block coding are transmit diversity schemes used in a wireless communication system to mitigate the effect of channel fading. ...
In the proposed system, 2 transmit and 2 receive antennas are used, to transmit modulated symbols of block N across an OFDM channel, using SFBC Alamouti's based encoding algorithm (SFBC-OFDM) derives from ...
A complete system of 2x2 MIMO Alamouti' scheme
Figure 4 . 4 Figure 4. ...
doi:10.35934/segi.v7i1.43
fatcat:cpiqhdgcznavtg3lzstmh6niwu
Experimental Evaluation of Adaptive Modulation and Coding in MIMO WiMAX with Limited Feedback
2007
EURASIP Journal on Advances in Signal Processing
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The standard compliant AMC utilizes a 3-bit feedback for SISO and Alamouti coded MIMO transmissions. ...
We found that this effect is caused by the asymmetric behavior of the wireless channel and by poor channel knowledge in the two-transmit-antenna case. ...
Without their valuable contributions to the testbed, these measurements could not have been performed. ...
doi:10.1155/2008/837102
fatcat:duzltodalvcergw6bvhunugjka
Diversity Enhancement of MIMO System with GA Optimized Linear Precoding of Orthogonal Space-Time Block Codes
2021
Indonesian Journal of Electrical Engineering and Informatics (IJEEI)
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With such systems, CSI (Channel State Information) on transmission is a key point for reducing the BEP thanks to different power allocation strategies. ...
This paper proposes a MIMO system with precoded orthogonal space-time block codes (OSTBC) optimized by Genetic Algorithm with ZF and MMSE equalization. ...
The OSTBC codes give better results than the Alamouti codes. • Solutions for = {3, 4} but with ℛ Diversity Enhancement of MIMO system (Harsha Gurdasani et al)
Figure 2 . 2 Equivalent SISO diagram of ...
doi:10.52549/ijeei.v9i2.2615
fatcat:gh6awlmluzdfff772jbzbf2fmm
Performance Improvement for Vehicular Communications Using Alamouti Scheme with High Mobility
2020
Journal of Telecommunications and Information Technology
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An adaptive switching scheme is proposed to select appropriate spaceblock coding (STBC or SFBC) in vehicular channels with high mobility levels. ...
The authors investigate the impact of time-varying channel on the performance of Alamouti space-time block codes (STBC) in OFDM systems. ...
Various STBC codes have been designed so far for massive MIMO technologies, but the Alamouti 2×1 scheme has been widely used because it is the only STBC approach capable of achieving full diversity and ...
doi:10.26636/jtit.2020.140120
fatcat:2bep4zklivdihfvjv5fx4jkm5i
Mimo-Ofdm Coded For Digital Terrestrial Television Broadcasting Systems
2013
Zenodo
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Different propagation channel models and configurations are considered for each diversity scheme. This study has been carried out in the context of development of the next generation DVB-T/H and WRAN. ...
This paper proposes and analyses the wireless telecommunication system with multiple antennas to the emission and reception MIMO (multiple input multiple output) with space diversity in a OFDM context. ...
Table II gives the comparison result between SISO (no diversity), MIMO Alamouti and MIMO system without encoder for particular C/N.
V. ...
doi:10.5281/zenodo.1074697
fatcat:qrkzr2fl6vetfhw2ppk6cfyjza
Adaptive Switching between Space-Time and Space-Frequency Block Coded OFDM Systems in Rayleigh Fading Channel
2013
International Journal of Communications, Network and System Sciences
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We focus on the application of space-time block codes (STBC) and space-frequency block codes (SFBC) in OFDM systems over time-varying and frequency-selective channels. ...
This work explores the performances of Space-Time and Space Frequency Coded Orthogonal Frequency Division Multiplexing (OFDM) with simple two branches transmit diversity scheme. ...
(3) and (4) give the symbol's estimation by the Alamouti combining scheme. ...
doi:10.4236/ijcns.2013.66034
fatcat:kncywjkss5erhol24m4w2fiixm
Joint Spatial Multiplexing and Transmit Diversity in MIMO Ad Hoc Networks
[article]
2017
arXiv
pre-print
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This paper investigates the performance of MIMO ad hoc networks that employ transmit diversity, as delivered by the Alamouti scheme, and/or spatial multiplexing, according to the Vertical Bell Labs Layered ...
Hence, each pair of nodes is allowed to select the best MIMO configuration for the impending data transfer. ...
The Alamouti Scheme The Alamouti scheme [11] is a transmit diversity technique that supports maximum-likelihood detection without requiring channel state information (CSI) at the transmitter. ...
arXiv:1704.02797v1
fatcat:w5bo6e5alvaxhocsswi5nudwea
Pilot assisted channel estimation in MIMO-STBC systems over time-varying fading channels
2014
2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt)
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At the receiver, we propose a straightforward MIMO channel estimation method before being used by STBC decoder. ...
We develop a novel MIMO channel estimation algorithm that adopts a pilot symbol assisted modulation (PSAM) which has been proven to be effective for fading channels. ...
For decoding purpose, the MIMO-STBC systems require the channel state information which is basically obtained through channel estimation techniques at the receiver side. ...
doi:10.1109/wiopt.2014.6850288
dblp:conf/wiopt/SlimaneJMB14
fatcat:ztggoqgewfhvraadp7bab2c234
Space-Time Block Coding (STBC) for Wireless Networks
2012
International Journal of Distributed and Parallel systems
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The STBC which includes the Alamouti Scheme as well as an orthogonal STBC for 4 transmit antenna case has been simulated and studied. ...
More advanced MIMO techniques are planned for future mobile networks in wireless Local Area Network (LANs) and Wide Area Network (WANs). ...
The Alamouti scheme has been simulated for BPSK modualation in Rayleigh channel. ...
doi:10.5121/ijdps.2012.3419
fatcat:jcb2evk2nvbabcg7fnmj2id77q
MIMO for DVB-NGH, the next generation mobile TV broadcasting [Accepted From Open Call]
2013
IEEE Communications Magazine
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MIMO techniques can be used to improve the robustness of the transmitted signal by exploiting the spatial diversity of the MIMO channel, but also to achieve increased data rates through spatial multiplexing ...
This paper describes the benefits of MIMO that motivated its incorporation in DVB-NGH, reviews the MIMO schemes adopted and discusses some aspects related to the deployment of MIMO networks in DVB-NGH. ...
Acknowledgment The authors would like to thank all his colleagues from the DVB TM-H working group that have contributed to the development of the DVB-NGH specification, in particular to the MIMO working ...
doi:10.1109/mcom.2013.6553689
fatcat:iyglww3m5zbodnzbzpuq25whui
Performance of extended space-time coding techniques for MIMO MC-CDMA systems
2006
2006 First European Conference on Antennas and Propagation
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An extended spacetime coding technique, the Double Alamouti, is evaluated considering a MIMO channel. ...
This assessment is made against standard Alamouti coding, for two different Tx/Rx antenna schemes (2x1 and 2x2). ...
NUMERICAL RESULTS In order to evaluate the performance of the proposed Double Alamouti space-time coding scheme, we used a MIMO channel derived from the system level channel model specified by the 3GPP ...
doi:10.1109/eucap.2006.4584673
fatcat:lbkgmmpxnvgalfdstwe7d5j2ie
On Differential Modulation in Downlink Multiuser MIMO Systems
[article]
2017
arXiv
pre-print
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As a space time block code, we use the Alamouti code that can be encoded/decoded using DM thereby eliminating the need for channel knowledge at the receiver. ...
In this paper, we consider a space time block coded multiuser multiple-input multiple-output (MU-MIMO) system with downlink transmission. ...
Furthermore, DM is considered for both schemes based on the Alamouti STBC in order to eliminate the need for estimating the composite channels formed by the precoders and the channels at the receivers. ...
arXiv:1707.01603v1
fatcat:mdndvx35abcmbgfj6a3ilwy5pa
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