scholarly journals A Generalized Analytical Solution to Channel Estimation With Intersymbol Interference Cancelation and Co-Channel Interference Cancelation for Single Input Single Output/Multiple Input Single Output Digital Terrestrial Multimedia Broadcasting Systems

2013 ◽  
Vol 59 (1) ◽  
pp. 116-128 ◽  
Author(s):  
Suyue Li ◽  
Jian Xiong ◽  
Lin Gui ◽  
Youyun Xu
Keyword(s):  
Analytical Solution ◽  
Channel Estimation ◽  
Intersymbol Interference ◽  
Single Input Single Output ◽  
Single Output ◽  
Multiple Input ◽  
Channel Interference ◽  
Interference Cancelation ◽  
Single Input

Estimation Design Using Youla Parametrization With Automotive Applications

2018 ◽  
Vol 140 (8) ◽  
Author(s):  
Francis Assadian ◽  
Alex K. Beckerman ◽  
Jose Velazquez Alcantar
Keyword(s):  
Kalman Filtering ◽  
Feedback Stabilization ◽  
Estimation Technique ◽  
Single Input Single Output ◽  
Normal Forces ◽  
Single Output ◽  
Multiple Input ◽  
Single Input ◽  
Established Technique ◽  
Better Than

Youla parametrization is a well-established technique in deriving single-input single-output (SISO) and, to a lesser extent, multiple-input multiple-ouput (MIMO) controllers (Youla, D., Bongiorno, J. J., Jr., and Lu, C., 1974, “Singleloop Feedback-Stabilization of Linear Multivariable Dynamical Plants,” Automatica, 10(2), pp. 159–173). However, the utility of this methodology in estimation design, specifically in the framework of controller output observer (COO) (Ozkan, B., Margolis, D., and Pengov, M., 2008, “The Controller Output Observer: Estimation of Vehicle Tire Cornering and Normal Forces,” ASME J. Dyn. Syst., Meas., Control, 130(6), p. 061002), is not established. The fundamental question to be answered is as follows: is it possible to design a deterministic estimation technique using Youla paramertization with the same robust performance, or better, than well-established stochastic estimation techniques such as Kalman filtering? To prove this point, at this stage, a comparative analysis between Youla parametrization in estimation and Kalman filtering is performed through simulations only. In this paper, we provide an overview of Youla parametrization for both control and estimation design. We develop a deterministic SISO and MIMO Youla estimation technique in the framework of COO, and we investigate the utility of this method for two applications in the automotive domain.

scholarly journals A new Transmission and Reception Algorithms for Improving the Performance of SISO/MIMO- OFDM Wireless Communication System

2021 ◽  
Vol 28 (3) ◽  
pp. 146-158
Author(s):  
Maha Monther Shahab ◽  
Saad Mshhain Hardan ◽  
Asmaa Salih Hammoodi
Keyword(s):  
Wireless Communication ◽  
Multiple Input Multiple Output ◽  
Low Complexity ◽  
Mimo Channels ◽  
Single Input Single Output ◽  
Single Output ◽  
Multiple Input ◽  
Input Multiple Output ◽  
Mimo Ofdm ◽  
Single Input

The future wireless communication requires a reliable transmission at high data rates, so the transmission over frequency-selective fading Multiple-Input–Multiple-Output MIMO channels become interesting since the capacity of "MIMO" channels expressions enormous gains above that of their essential single-input–single-output "SISO" channels. This paper examines the performance of the Low Complexity Zero Forcing "LCZF" equalizer for both systems single-input–single-output-Orthogonal Frequency Division Multiplexing" SISO-OFDM" and spatially multiplexed-Multiple-Input–Multiple-Output "SM-MIMO-OFDM" with different "QAM" modulations. It is exploring a new algorithm to improve the performance of the "BER", spectral efficiency, and power efficiency and to reduce the complexity of the "RF" communication system under the effect of the Additive White Gaussian Noise "AWGN" and multipath fading channel. It is also improves an efficient channel by developing a Low Complexity Zero Forcing "LCZF" equalizer for both "SISO-OFDM" and "SM-MIMO-OFDM" wireless Communication systems. This is done by proposing a new algorithm at the receiver side to covert the Linear Convolution in to Cyclic Convolution by adding Zero Padding "ZP" to the channel impulse response in such a way to be the same length to the transmitted signal in the time domain which is of length N, where N is the length of "IFFT".

Study of receiver design in a MIMO SAR configuration

2012 ◽  
Vol 4 (3) ◽  
pp. 335-339 ◽  
Author(s):  
Vishal Riché ◽  
Stéphane Méric ◽  
Éric Pottier
Keyword(s):  
Multiple Input Multiple Output ◽  
Real Data ◽  
Synthetic Aperture ◽  
Receiver Design ◽  
Single Input Single Output ◽  
Single Output ◽  
Multiple Input ◽  
Input Multiple Output ◽  
Single Input ◽  
Sar Processing

In this paper, we are concerned on the receiver design and the different imaging possibilities for radar multiple input multiple output (MIMO) synthetic aperture radar (SAR). The transmission of pseudo-orthogonal waveforms gives many opportunities in reception on how to manage these different signals. We proposed to compare different resolutions and robustness for SAR measurements: single input single output (SISO) and MIMO. Moreover, we developed different SAR processings based on MIMO configuration by using the Stolt interpolation on simulations. On real data, these SAR processing will be adapted for the backprojection processing.

scholarly journals Konsep Transmisi Tidak Koheren menggunakan Differential Unitary Modulation pada OFDMA

2021 ◽  
Vol 9 (3) ◽  
pp. 634
Author(s):  
DHONI PUTRA SETIAWAN ◽  
HARFAN HIAN RYANU ◽  
VINSENSIUS SIGIT WIDHI PRABOWO
Keyword(s):  
Multiple Access ◽  
High Mobility ◽  
Block Code ◽  
Differential Modulation ◽  
Frequency Division ◽  
Single Input Single Output ◽  
Single Output ◽  
Multiple Input ◽  
Modulation Techniques ◽  
Single Input

ABSTRAKDifferential modulation adalah sebuah teknik modulasi yang memungkinkan pengiriman informasi tanpa diperlukannya estimasi kondisi kanal di sisi penerima. Teknik ini biasa diimplementasikan pada kondisi dimana kanal transmisi berubah dengan sangat cepat, seperti ketika pengguna layanan dalam kondisi mobilitas yang sangat cepat. Pada artikel ini, beberapa teknik differential modulation yang dikembangkan dari Space Time Block Code (STBC) diujicobakan pada Orthogonal Frequency Division Multiple Access (OFDMA) dengan dua skema yang berbeda. Skema pertama menggunakan konsep sistem antena multiple-input multipleoutput (MIMO), dan skema kedua adalah skema single-input single-output (SISO). Hasil pengujian yang diperoleh, teknik differential modulation dengan skema yang ditawarkan pada artikel ini mampu memberikan kinerja yang lebih baik daripada teknik differential modulation yang konvensional. Hasil riset menunjukkan konsep transmisi tidak koheren dapat menjadi solusi potensial untuk sistem komunikasi nirkabel berkecepatan tinggi.Kata kunci: transmisi tidak koheren, differential modulation, mobilitas tinggi, OFDMA, STBC ABSTRACTDifferential modulation is a modulation technique that can be used without the presence of channel estimation in the receiver. This technique is usually implemented when the channel condition changes rapidly, for example, when the user is in a high mobility condition. In this paper, several differential modulation techniques, which are modified from space-time block code (STBC) are tested for Orthogonal Frequency Division Multiple Access (OFDMA) using two different schemes. The first scheme uses multiple-input multiple-output (MIMO) antenna system, while the second scheme use single-input single-output (SISO). Based on our results, the differential modulation techniques proposed in this paper can overcome the conventional differential modulation technique. This research shows the proposed non-coherent transmission could be a potential scheme for high mobility wireless communications.Keywords: non-coherent transmission, differential modulation, high mobility, OFDMA, STBC.

scholarly journals MIMO SAR Using Orthogonal Coding: Design, Performance Analysis, and Verifications

2015 ◽  
Vol 2015 ◽  
pp. 1-10
Author(s):  
Yueguan Lin ◽  
Yida Fan ◽  
Chenglong Jiang ◽  
Zhiqiang Wang ◽  
Weizeng Shao
Keyword(s):  
Performance Analysis ◽  
Imaging System ◽  
Multiple Input Multiple Output ◽  
Single Input Single Output ◽  
Single Output ◽  
Multiple Input ◽  
Input Multiple Output ◽  
Single Input ◽  
Scientists And Engineers ◽  
Azimuth Resolution

Multiple-input multiple-output (MIMO) synthetic aperture radar (SAR) is a promising technology in radar imaging which provides a better balance of azimuth resolution and swath width compared with traditional single-input single-output (SISO) SAR. It has the potential to help scientists and engineers to design ambitious SAR system with higher resolution and wider swath. This paper studies the principle of MIMO SAR using orthogonal coding waveform and then provides the performance analysis in resolution and swath width. By using orthogonal coding waveform, lower channel interference is obtained, which makes MIMO SAR achieve wider unambiguous range swath and lower azimuth ambiguity. Simulations are carried out by means of the system parameters of real spaceborne SAR platform. A ground-based MIMO SAR imaging system with up and down chirp modulation is also designed. The performances of MIMO SAR and SISO SAR are compared, and the validity and advantage of MIMO SAR are verified.

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