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IEEE Conference of Russian Young Researchers in Electrical and Electronic Engineering (EIConRus)

作者： Binh Dang Zhilenkova, Elena A. ITMO Univ Fac Control Syst & Robot St Petersburg Russia

The methods of adaptive and robust signal processing in the system of space-time coding are considered. The urgency of this problem in active radar installations and communication systems is shown.

ISBN: (纸本)9781728103396

The methods of adaptive and robust signal processing in the system of space-time coding are considered. The urgency of this problem in active radar installations and communication systems is shown.

关键词： adaptive robust signal processing space-time coding active radar communication systems

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Achievable diversity order by space-time trellis coding combined with MLED and OFDM over frequency selective fading channels

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IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS 2006年第6期5卷 1217-1222页

作者： So, Daniel K. C. Cheng, Roger S. Univ Manchester Sch Elect & Elect Engn Manchester M60 1QD Lancs England Hong Kong Univ Sci & Technol Dept Elect & Elect Engn Hong Kong Hong Kong Peoples R China

space-time trellis code (STTC) in frequency selective fading channel using maximum likelihood equalization and detection (MLED), and orthogonal frequency division multiplexing (OFDM) are compared in this paper for channels with arbitrary delay profile. The performance bound for both schemes are first derived and their performances are compared both analytically and through simulations. Code design, receiver complexity, interleaver design and the robustness issues are addressed in these comparisons.

关键词： intersymbol interference maximum likelihood detection OFDM performance evaluation space-time coding

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Cyclic Division Algebras: A Tool for space-time coding

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FOUNDATIONS AND TRENDS IN COMMUNICATIONS AND INFORMATION THEORY 2007年第1期4卷 1-95页

作者： Oggier, Frederique Belfiore, Jean-Claude Viterbo, Emanuele CALTECH Dept Elect Engn Pasadena CA 91125 USA Ecole Natl Super Telecommun Bretagne F-75013 Paris France Univ Calabria Dipartimento Elettron Informat & Sistemist Arcavacata Di Rende Italy

Multiple antennas at both the transmitter and receiver ends of a wireless digital transmission channel may increase both data rate and reliability. Reliable high rate transmission over such channels can only be achieved through space-time coding. Rank and determinant code design criteria have been proposed to enhance diversity and coding gain. The special case of full-diversity criterion requires that the difference of any two distinct codewords has full rank. Extensive work has been done on space-time coding, aiming at finding fully diverse codes with high rate. Division algebras have been proposed as a new tool for constructing space-time codes, since they are non-commutative algebras that naturally yield linear fully diverse codes. Their algebraic properties can thus be further exploited to improve the design of good codes. The aim of this work is to provide a tutorial introduction to the algebraic tools involved in the design of codes based on cyclic division algebras. The different design criteria involved will be illustrated, including the constellation shaping, the information lossless property, the non-vanishing determinant property, and the diversity multiplexing trade-off. The final target is to give the complete mathematical background underlying the construction of the Golden code and the other Perfect space-time block codes.

关键词： Cyclic algebras division algebras full diversity golden code non-vanishing determinant perfect space-time codes space-time coding

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space-frequency-polarization-division multiplexed wireless communication system using anisotropic space-time-coding digital metasurface

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National Science Review 2022年第11期9卷 149-160页

作者： Jun Chen Ke Xiangyu Chen Wankai Tang Ming Zheng Chen Lei Zhang Li Wang Jun Yan Dai Jin Yang Jun Wei Zhang Lijie Wu Qiang Cheng Shi Jin Tie Jun Cui State Key Laboratory of Millimeter Waves Southeast University Institute of Electromagnetic Space Southeast University Frontiers Science Center for Mobile Information Communication and Security Southeast University National Mobile Communications Research Laboratory Southeast University Southeast University Wuxi Campus

In the past few years, wireless communications based on digital coding metasurfaces have gained research interest owing to their simplified architectures and low cost. However, in most of the metasurface-based wireless systems, a single-polarization scenario is used, limiting the channel capacities. To solve the problem, multiplexing methods have been adopted, but the system complexity is inevitably increased. Here,a space-frequency-polarization-division multiplexed wireless communication system is proposed using an anisotropic space-time-coding digital metasurface. By separately designing time-varying control voltage sequences for differently oriented varactor diodes integrated on the metasurface, we achieve frequency-polarization-division multiplexed modulations. By further introducing different time-delay gradients to the control voltage sequences in two polarization directions, we successfully obtain space-frequency-polarization-division multiplexed modulations to realize a wireless communication system with a new architecture. The new communication system is designed with compact dual-polarized meta-elements, and can improve channel capacity and space utilization. Experimental results demonstrate the high-performance and real-time transmission capability of the proposed communication system,confirming its potential application in multiple-user collaborative wireless communications.

关键词： polarization-division multiplexing frequency-division multiplexing space-division multiplexing space-time coding wireless communication

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Using of space-time coding anti-interference techniques to improve system capacity

Using of space-time coding anti-interference techniques to i...

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4th International Conference on 3G Mobile Communication Technologies

作者： Qin Liu Jiawei Yang Jiandong Li State Key Laboratory On ISN and Information Science Institute Xidian University Xi'an China

ISBN: (纸本)085296756X

Future communication requires more advanced mobile service and has more users, so the spectrum is becoming one of factors restraining the development. To solve this problem, many new coding, modulating and transmitting techniques are being put forward. The space-time coding technique is just one important method, which has been used in the third generation communication systems. The paper focuses on the anti-interference technique to restrain the interference of co-channel users while simply introducing the concept of space-time block coding. The anti-interference technique uses the relationship among signals to remove the interference, which can enhance the capacity of the communication system by introducing co-channel users. Moreover, the paper submits a strategy to eliminate the effect of co-channel interference by decoding signals by stages while using the different performance of various modulation techniques. The system performance can be enhanced using this strategy, which is very important for enlarging the capacity of the system.

关键词： space-time codes interference suppression channel capacity cochannel interference adjacent channel interference 3G mobile communication block codes modulation coding decoding space-time coding anti-interference techniques system capacity mobile service co-channel interference decoding performance modulation third generation communication systems co-channel users block coding capacity

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Enhanced Mobile Digital Video Broadcasting with Distributed space-time coding

Enhanced Mobile Digital Video Broadcasting with Distributed ...

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IEEE International Conference on Communications

作者： Ming Liu Matthieu Crussiere Maryline Helard Jean-Francois Helard Youssef Nasser Universite Europeenne de Bretagne (UEB) INSA American University of Beirut ECE Department

ISBN: (纸本)9781457720529

This paper investigates the distributed space-time (ST) coding proposals for the future Digital Video Broadcasting-Next Generation Handheld (DVB-NGH) standard. We first theoretically show that the distributed MIMO scheme is the best broadcasting scenario in terms of channel capacity. Consequently we evaluate the performance of several ST coding proposals for DVB-NGH with practical system specifications and channel conditions. Simulation results demonstrate that the 3D code is the best ST coding solution for broadcasting in the distributed MIMO scenario.

关键词： broadcasting digital video broadcasting Distribute system specifications space-time coding time coding differential space-time coding Channel capacity multiple input multiple output systems

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Differential space-time network coding in MIMO two-way relay channel network

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INTERNATIONAL JOURNAL OF COMMUNICATION SYSTEMS 2016年第3期29卷 553-566页

作者： Jin, Xiaoping Han, Xinqiang Jin, Ning Li, Youming Li, Zhengquan Wang, Xiuming Ningbo Univ Inst Commun Technol Ningbo 315211 Zhejiang Peoples R China Southeast Univ Sch Informat Sci & Engn Nanjing 210096 Jiangsu Peoples R China China Jiliang Univ Dept Informat Engn Hangzhou 310018 Zhejiang Peoples R China

This paper focuses on noncoherent detection scheme for multiple-input multiple-output two-way relay channel network with two two-antennas source nodes and one single-antenna relay node. An orthogonal differential space-time network coding (ODSTNC) scheme based on relay detection and forward protocol is proposed. The proposed scheme combines space-time coding with network coding, and the differential modulation and detection are used in both multiple access stage and broadcast stage. The multiplesymbol differential detection is employed at the relay. The maximum likelihood decision and its low-complexity sphere decoding decision are given. The upper and lower bounds on the average symbol error probability for this system under differential binary phase shift keying (DBPSK) are derived, and a diversity order of 2 is confirmed to be achieved. The simulation results show that the ODSTNC scheme has good performance, and it is available for the applications of far distance signal transmission between two terminals where channel state information is unknown. Copyright (c) 2014 John Wiley & Sons, Ltd.

关键词： differential detection space-time coding network coding two-way relay channel network symbol error probability

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Generalized Partial Feedback Based Orthogonal space-time Block coding

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IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS 2009年第6期8卷 2771-2775页

作者： Sezgin, Aydin Altay, Goekmen Paulraj, Arogyaswami Stanford Univ Informat Syst Lab Stanford CA 94305 USA

Recently, a full rate orthogonal space-time block code achieving full diversity while preserving low decoding complexity with very limited feedback was proposed. Based on a feedback of only p - 1 bits, these codes exhibit a higher coding gain as well. In this work, we propose a low complexity, though close to optimal, feedback selection scheme. Furthermore, we analyze the performance of these codes with arbitrary number of transmit and receive antennas. We show that with this feedback based codes full diversity of n(T)n(R)p is obtained. Finally, we provide closed form expressions for the ergodic and outage mutual information as well as error rates.

关键词： Feedback space-time coding MIMO quadratic forms

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space-time Complementary coding MIMO with joint spatial diversity and multiplex capability

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IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS 2008年第8期7卷 2950-2956页

作者： Chen, Hsiao-Hwa Yeh, Yu-Ching Guizani, Mohsen Huang, Yueh-Min Natl Cheng Kung Univ Dept Engn Sci Tainan 70101 Taiwan Western Michigan Univ Dept Comp Sci Kalamazoo MI 49008 USA

This paper introduces a new space-time coding scheme, namely space-time Complementary coding (STCC) scheme. With the help of pair-wise complementary codes, an STCC MIMO system can achieve both spatial diversity and multiplex transmission. The scheme requires neither bandwidth expansion nor feedback information from receiver, and it offers a nearly interference-free and multipath-resist performance due to a widely open interference-free window of the pair-wise complementary codes. The analytical results reveals that it provides a uniquely high diversity-multiplex gain product for its applications in flat or frequency-selective fading channel.

关键词： space-time coding MIMO complementary code spatial diversity spatial multiplex

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Application on space-time coding Technology in Ultrasonic Back-propagation Method

Application on Space-time Coding Technology in Ultrasonic Ba...

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IEEE International Conference on Bioinformatics and Biomedicine

作者： Xiaonian HE Weixiang LIU Siping CHEN Zhengdi QIN National-Regional Key Technology Engineering Laboratory of China for Medical Ultrasound Guangdong Provincial Key Laboratory of Biomedical Information Detection

ISBN: (纸本)9781479913114

When applying the space-time coding technique into the ultrasound imaging system, the signal-to-noise-ratio (SNR) can be improved. However when the space-time coding combines with the conventional synthetic aperture techniques can result some ghost images because the conventional synthetic aperture technique cannot suppress the axial direction of the side-lobe which emerges after pulse compression and thereby reducing the image quality. To solve the problem of ghost imaging, this paper introduces a new method, which combines the techniques of space-time coding and ultrasonic back-propagation synthetic aperture. The main idea of the method is that different locations using different coding pulse emission. It can be achieved by using the Truncated long code[l]. The synthetic aperture technique based on the ultrasonic back-propagation is then applied for processing the echo signals to further improve the SNR as well as suppress the axial side-lobe. The crosstalk among echo signals can also be reduced. Simulation shows positive results of the new method. Both detection sensitivity and robustness against noise are improved and overall performance of the image system is enhanced.

关键词： space-time coding back-propagation axial sidelobe SNR

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