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IEEE International Conference on Signal Processing, Communications and Computing (ICSPCC)

作者： Marye, Yihenew Wondie Zhao, Hua-An Kumamoto Univ Dept Comp Sci & Elect Engn Kumamoto 860 Japan

ISBN: (纸本)9781479952748

space-time coding (STC) applied for multiple antenna systems has proved very important in attaining better diversity and multiplexing gains. Recently, virtual antenna system is emerging as a solution for spatially constrained wireless terminals to compensate for the lost benefit from the incapability of multiple antenna installation. Distributed space-time coding (DSTC) is the STC counterpart applied for wireless relay systems. In this paper, DSTC is applied for estimate and forward relaying strategy. The analysis shows that it attains better pairwise error probability (PEP) compared to amplify-and-forward (AF) based DSTC. In addition, the scheme is more responsive to determinant change of the code word difference matrix as the PEP upper bound with lowest singular value shows. As a result, compared to the AF based DSTC, better coding gain is obtained.

关键词： Encoding MIMO Relays Resource management Upper bound Wireless communication Wireless sensor networks space-time coding Upper bound CARRIER SYSTEM relay management of resources Wireless sensor networks multiple input multiple output systems Wireless communication systems ANTENNA SYSTEM Relay systems multiple antenna SINGLE STRIP CONTAINERS air feed equipment

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Dual-Polarized RIS-Based STBC Transmission with Polarization Coupling Analysis

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ZTE Communications 2022年第1期20卷 63-75页

作者： ZHOU Mingyong CHEN Xiangyu TANG Wankai KE Jun Chen JIN Shi CHENG Qiang CUI Tie Jun National Mobile Communications Research Laboratory Southeast UniversityNanjing 210096China State Key Laboratory of Millimeter Waves Southeast UniversityNanjing 210096China

The rapid development of the reconfigurable intelligent surface(RIS)technology has given rise to a new paradigm of wireless *** present,most research works on RIS-based transmitters focus on single-polarized *** this paper,we propose a dual-polarized RIS-based transmitter,which realizes 4-transmit space-time block coding(STBC)transmission by properly partitioning RIS’s unit cells and utilizing the degree of freedom of *** proposed scheme is evaluated through a prototype system that utilizes a fabricated dual-polarized phase-adjustable *** particular,the polarization coupling phenomenon in each unit cell of the employed dual-polarized RIS is modeled and *** experimental results are in good agreement with the theoretical modeling and analysis results,and an initial re-search effort is made on characterizing the polarization coupling property in the dual-polarized RIS.

关键词： reconfigurable intelligent surface space-time coding dual polarization coupling modeling prototyping

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Generalized Noncoherent space-time Block Codes from Quantum Error Correction

Generalized Noncoherent Space-Time Block Codes from Quantum ...

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IEEE Military Communications Conference (MILCOM)

作者： Lanham, S. Andrew Bradley, Eli La Cour, Brian R. Univ Texas Austin Dept Comp Sci Austin TX 78758 USA Univ Texas Austin Appl Res Labs Austin TX 78758 USA

ISBN: (纸本)9781665485340

This paper generalizes results in noncoherent spacetime block code (STBC) design based on quantum error correction (QEC) to new antenna configurations. Previous work proposed QEC-inspired STBCs for antenna geometries where the number of transmit and receive antennas were equal and a power of two. In this work we extend these results by providing QEC-inspired STBCs applicable to all square antenna geometries and some rectangular geometries where the number of receive antennas is greater than the number of transmit antennas. We derive the maximum-likelihood decoding rule for this family of codes for the special case of Rayleigh fading with additive white Gaussian noise. We present Monte Carlo simulations of the performance of the codes in this environment for a three-antenna square geometry and a three-by-six rectangular geometry. We demonstrate competitive performance for these codes with respect to a popular noncoherent differential code.

关键词： noncoherent communication MIMO space-time coding short-blocklength

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Generalized space-time Super-Modulation and Its Application to Grant-Free Medium Access

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IEEE TRANSACTIONS ON COMMUNICATIONS 2021年第9期69卷 5758-5772页

作者： Mehran, Farhad Nikitopoulos, Konstantinos Jafarkhani, Hamid Univ Surrey 5G Innovat Ctr Inst Commun Syst Guildford GU2 7XH Surrey England Univ Calif Irvine Ctr Pervas Commun & Comp Irvine CA 92697 USA

In this work, Generalized space-time Super-Modulation (GSTSM) is introduced which enables the transmission of an additional flexible-rate and highly-reliable information stream concurrently with the conventionally transmitted symbols, without the need for increasing the corresponding packet length. This is attained by jointly exploiting the spatial and temporal dimensions of multiple-antenna systems, which enables efficient detection for conventional and additional information subchannels even in highly correlated channel conditions or AWGN channels. In the context of machine-type communications, GSTSM enables grant-free medium access without transmitting additional headers to convey each machine's signature information. Hence, it is shown that even at an extreme case where the data packets of two users are always colliding, GSTSM offers throughput gains of up to 33% compared to the best examined header-based scheme. For the same scenario, it is shown that GSTSM based on joint multi-user detection provides throughput gains of up to 2.5x compared with the case where users' signals are detected independently. In addition, it yields over 90% improvement in achievable rates compared with the schemes that require centralized medium-access coordination. For both joint and independent signal detection schemes, it is also shown that adopting an iterative detection/decoding approach allows to further improve the throughput gains.

关键词： Multiple-input multiple-output (MIMO) space-time coding grant-free machine-type communications (MTCs)

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Wireless Robotics: Generalization of an Efficient Approach with Multi-h CPM Signaling and L2-Orthogonal space-time coding

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WIRELESS PERSONAL COMMUNICATIONS 2013年第3期70卷 1183-1198页

作者： Hisojo, Miguel Angel Lebrun, Jerome Deneire, Luc Univ Nice Sophia Antipolis CNRS F-06903 Sophia Antipolis France

Wireless Robotics has become an important research topic in the last two decades. The need of controlling a robot to perform tasks remotely has significantly increased with the number of applications in fields like medicine and military, among many others. Taking advantage of current standards like Bluetooth and Wifi, Wireless Robotics calls for low power consumption components, robustness and high data rate through the wireless channel. This call can be fulfilled with a reliable signaling format, satisfying the needs of low power consumption and high spectral efficiency. Besides, continuous phase modulation (CPM) has gained increasing attention due to its favorable trade-off between power and bandwidth efficiency. Multi-h CPM recently appeared as a generalization of single-h schemes so as to further decrease the need for bandwidth expansion over the wireless channel. Despite the interesting characteristics of CPM, the decoding of the received signal is particularly difficult in a multi-path wireless environment with no diversity. To provide some level of diversity, several authors have proposed to combine CPM with space-time block coding. A new family of codes for CPM, based on -orthogonality was recently introduced in Hesse et al. (IEEE Trans Commun 59(11): 3158-3166, 2011). These full rate codes achieve full diversity and a low decoding complexity. In this paper, we detail a non trivial extension of these -orthogonal space-time codes using multi-h signaling schemes. These new codes still achieve full diversity but a better spectral compactness by utilizing the available communication bandwidth more efficiently. Also, the decoding complexity is greatly decreased by using only one correlation filter bank for the detection of all transmitted signals.

关键词： Wireless Robotics space-time coding Continuous phase modulation L2-Orthogonal design Multi-h CPM Diversity Decoding complexity

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Optimal Diversity and coding Gains for Millimeter-Wave Communication

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IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY 2021年第5期70卷 4601-4614页

作者： Aboutaleb, Ahmed Fatnassi, Wael Rezki, Zouheir Chaaban, Anas Univ Idaho Moscow ID 83844 USA Washington State Univ Dept Elect Engn & Comp Sci Pullman WA 99163 USA Univ Calif Irvine Dept Elect & Comp Engn Irvine CA 92697 USA Univ Idaho Dept Elect & Comp Engn Moscow ID 83844 USA Univ Calif Sanata Cruz Dept Elect & Comp Engn Santa Cruz CA 95064 USA Univ British Columbia Sch Engn Kelowna BC V1V 1V7 Canada

We consider a millimeter-wave communication system where the fading channel follows the Nakagami-m distribution. We derive performance limits of such a system in terms of the diversity and coding gains. First, we argue that although traditional design criteria for space-time codes (STCs) are optimal for Rayleigh and Rician fading channels, they fail to capture the optimal diversity and coding gains for Nakagami-m fading channels. Then, we derive a tight upper bound on the average pair-wise error probability at high signal-to-noise ratios. From such a bound, we obtain upper and lower bounds on the diversity and coding gains of any STC over the Nakagami-m fading channel. We then identify necessary and sufficient conditions for STCs to achieve the upper bounds, leading to a fundamental trade-off between maximizing the diversity and coding gains. We also investigate the effect of blockage using stochastic geometry. We show that the diversity and coding gains are limited by the non-line-of-sight link. Numerical simulations assuming different fading scenarios further illustrate that STCs that satisfy the new design achieve full diversity. Whereas, STCs that are otherwise optimal for Rayleigh and Rician channels do not. Furthermore, in a typical indoor environment, blockage reduces the coding gain by 1.5 dB for BERs less than 10(-3).

关键词： MIMO mmWave space-time coding Nakagami-m diversity gain coding gain blockage 5G

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Invariant Incoherent MIMO Reception Over Doubly Selective Channels

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IEEE ACCESS 2021年 9卷 67776-67785页

作者： Ramirez-Arredondo, G. Pena-Campos, F. Parra-Michel, Ramon Kontorovich, Valeri Ctr Invest Estudios Avanzados CINVESTAV Dept Elect Engn Zapopan 45017 Mexico Tecnol Monterrey EIC Mecatron Zapopan 45201 Mexico Ctr Invest Estudios Avanzados CINVESTAV Dept Commun Mexico City 07360 DF Mexico

Nowadays, there is a need for wireless communications to operate over a variety of scenarios, including high mobility multiple-input multiple-output (MIMO) applications, that bring along a challenging problem. In channels where Doppler spread and delay spread are high, complexity of coherent detectors and pilot overhead are both raised. This work proposes a non-coherent reception technique, easily scalable to any number of antennas for the MIMO case, using simple coding and decoding structures which take advantage of channel diversity addition in three domains: time, frequency and space, by using virtual trajectories along with space time block-coding. Coarse analytics on the system performance in terms of the bit error rate are computed using Chernoff Boundaries as a function of the channel diversity and the order of the differential modulation, validating the efficiency of the proposed receiver.

关键词： Differential modulation doubly selective channels invariance MIMO non-coherent receivers space-time coding

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Coordinate Interleaved Orthogonal Design With Media-Based Modulation

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IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY 2021年第3期70卷 2867-2871页

作者： Yildirim, Ibrahim Basar, Ertugrul Altunbas, Ibrahim Istanbul Tech Univ Elect & Commun Engn TR-34469 Istanbul Sariyer Turkey Koc Univ TR-34450 Istanbul Turkey

In this work, we propose a new multiple-input multiple-output (MIMO) concept, which is called coordinate interleaved orthogonal design with media-based modulation (CIOD-MBM). The proposed two novel CIOD-MBM schemes provide improved data rates as well as diversity gain while enabling hardware simplicity using a single radio frequency (RF) chain. Moreover, using the equivalent channel model, a reduced complexity can be obtained for maximum likelihood (ML) detection of the proposed system. Using computer simulations, it is shown that CIOD-MBM schemes provide remarkably better performance against the conventional MBM and CIOD systems.

关键词： Coordinate interleaved orthogonal design index modulation media-based modulation space-time coding

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space-time Coded Generalized Spatial Modulation for Sparse Code Division Multiple Access

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IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS 2021年第8期20卷 5359-5372页

作者： Liu, Yusha Xiang, Luping Yang, Lie-Liang Hanzo, Lajos Univ Southampton Sch Elect & Comp Sci Southampton SO17 1BJ Hants England

space-time coded generalized spatial modulation-aided sparse code division multiple access (STC/GSM-SCDMA) is proposed, which exploits the two-dimensional transmit diversity potential of both the spatial and of the frequency domain. Hence, it constitutes a promising solution for the pervasive connectivity of devices in next-generation nonorthogonal multiple access (NOMA) systems. More explicitly, our STC/GSM scheme achieves diversity in the spatial-domain, while the sparse signal-spreading action of SCDMA results in frequency-domain (FD) diversity. A single-user bit error rate (BER) bound is derived as the benchmark of the BER performance of our STC/GSM-SCDMA system. Furthermore, a pair of novel detectors, namely a bespoke message passing aided (MPA) detector and a tailor-made approximate message passing (AMP) detector are conceived by designing a new factor graphs for our proposed STC/GSM-SCDMA system. The performance of these detectors is characterized in terms of their BER vs. complexity. Our simulation results show that the proposed AMP detector is capable of operating within 2 dB of the MPA detector's signal-to-noise ratio (SNR) requirement, while supporting a normalized user load of 150%, despite its appealing low complexity, which is about 1000 times lower than the MPA detector.

关键词： Wireless communication NOMA Message passing Frequency-domain analysis Bit error rate Detectors Complexity theory space-time coding generalized spatial modulation sparse code multiple access nonorthogonal multiple access

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Characterization and Exploitation of Quasi Determinism in Multi-Conductor Power Line Communication Noise

IEEE OPEN JOURNAL OF THE COMMUNICATIONS SOCIETY

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IEEE OPEN JOURNAL OF THE COMMUNICATIONS SOCIETY 2021年 2卷 1809-1825页

作者： Righini, Davide Tonello, Andrea M. Univ Klagenfurt Dept Networked & Embedded Syst A-9020 Klagenfurt Austria

Several experiments and field trials have shown that deterministic components characterize the Power Line Communication (PLC) noise across multiple-conductors. This article aims at understanding the main origins of these noise components and evaluate several methods to characterize them statistically. The correlation, distance-correlation, mutual information estimation, and a proposed linear coefficient ratio, are used to analyze the noise time-series statistically. The analysis of the PLC noise deterministic components allow us to develop an enhanced noise model that includes them. The presence of deterministic noise fosters the development of coding and decoding algorithms that aim at mitigating the noise effect. New decoding techniques called Quasi-Deterministic-Decoding are detailed and tested with single-input-multiple-output (SIMO) 1x2 and multiple-input-multiple-output (MIMO) 2x2 transmission configurations using real PLC noise and channel realizations. The proposed model leads to a better representation of the PLC noise traces and, consequently, the development of improved coding algorithms for reliable data transmission at low signal-to-noise ratios.

关键词： Noise noise mitigation MIMO space-time coding space-time processing power line communications

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