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IEEE 24th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)

作者： Xu, Jiaxiang Zhang, Jianhua Beijing Univ Posts & Telecommun Wireless Technol Innovat Inst Minist Educ Key Lab Universal Wireless Commun Beijing 100088 Peoples R China

ISBN: (纸本)9781467362337

This paper investigates a spatial multiplexing MIMO scheme with beamforming and space-time block coding (STBC) for downlink transmission. It combines SM-STBC with beamforming under high spatial correlated channel, and has the advantages of the three techniques. The proposed scheme utilizes beamforming weights to build uncorrelated virtual channels based on uplink direction of arrival (DOA) estimation, and we calculate weights with the help of the water-filling power allocation. The Butler fixed beamforming network is deployed to receive parallel data streams due to its ability to form orthogonal beams. We also propose a matching algorithm linking each data stream to corresponding receive beam, and give the order of successive interference cancellation detection. So the system can transmit parallel data streams as well as providing beamforming and diversity gain. Simulation results show the proposed scheme has a better performance than the benchmark systems under the same spectrum efficiency, and it is suitable for the rich scattering environment.

关键词： Beamforming downlinking space time block coding data flow space division multiplexing spectral efficiency block codes multiple input multiple output systems Direction of arrival estimation

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space-time block coding Waveform for Suppression of Jamming in a MIMO Radar 16

Space-Time Block Coding Waveform for Suppression of Jamming ...

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16th International Radar Symposium (IRS)

作者： van Rossum, Wim Huizing, Albert Netherlands Org Appl Sci Res TNO Oude Waalsdorperweg 63 NL-2597 AK The Hague Netherlands

ISBN: (纸本)9783954048533

In a phased array radar which uses Multiple Input Multiple Output (MIMO) techniques, each (group of) element(s) transmits a different waveform. This extra degree of freedom in the design of a phased array radar potentially yields an advantage for improved suppression of sidelobe clutter and jamming. In this paper a space-time block coding (STBC) waveform for suppression of jamming in a MIMO radar is investigated and compared to space-coded waveforms such as TDMA and FDMA.

关键词： MIMO radar jamming space time block coding phased array radar waveforms Degree of freedom multiple input multiple output systems sidelobe clutter Frequency division multiaccess array radar time division multiple access Suppression

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RANDOMIZED space-time block coding FOR DISTRIBUTED AMPLIFY-AND-FORWARD COOPERATIVE RELAYS

RANDOMIZED SPACE-TIME BLOCK CODING FOR DISTRIBUTED AMPLIFY-A...

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IEEE International Conference on Acoustics, Speech, and Signal Processing

作者： Francesco Verde Anna Scaglione University Federico II Naples Italy University of California Davis CA USA

ISBN: (纸本)9781424442959

Cooperation diversity schemes employing space-time block coding (STBC) techniques have been proposed for wireless networks to increase network capacity and coverage even when each node is equipped with a single antenna. Such schemes allow several relay stations distributed in space to assist the transmission between a given source-destination pair. A key design problem in cooperative networks is to take advantage from spatial diversity by reducing the amount of signaling and processing overhead as far as possible. In this paper, capitalizing on randomized STBC (RSTBC), a coding method which has been recently developed for decode-and-forward (D&F) relay nodes, a totally decentralized cooperative communication scheme is proposed for amplify-and-forward (A&F) relays, where each relay is unaware of both the effective STBC being employed by the other nodes and the number of cooperating stations. Numerical results are provided to highlight the effectiveness of the proposed scheme in comparison to its D&F counterpart.

关键词： Amplify-and-forward relaying cooperative wireless networks relay design space-time randomized coding relay space time block coding Wireless networks Relay stations spacetime spatial diversity network capacity design problems DEUTERIUM FLUORIDES

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Doppler Compensated space-time block coding for Multistatic Radar Systems

Doppler Compensated Space-Time Block Coding for Multistatic ...

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IEEE Radar Conference

作者： Jabran Akhtar Norwegian Defence Research Establishment (FFI)

ISBN: (纸本)9781467357920

space-time block coding techniques are useful for multistatic/MIMO radar systems as they allow for the use of non-orthogonal waveforms while providing waveform diversity with full signal separation. block coding, however, necessitates the assumption of no or negligible target motion. This paper attempts to alleviate the issue of target Doppler shifts by introducing an adaptive block coding scheme. The modified block code is appropriately tailored to make certain that the detection degradation caused by Doppler shift remains tolerable at the expense of lower emit antenna power. This work can be seen as bridging the gap between the usage of a full block code in the existence of no target Doppler and the emission of a single, but Doppler resilient, waveform with extensive object motion. Simulations are used to demonstrate how adaptation of a block code significantly reduces some of the issues caused by target motion providing detectional benefits.

关键词： block codes Doppler effect space time block coding waveform diversity multistatic radar non-orthogonal Codes Targets waveforms

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Performance Results of space-time block coding Over Nakagami-m Fading Channels

Performance Results of Space-time Block Coding Over Nakagami...

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2005年无线通信、网络和移动计算国际会议

作者： Xudong Wang Dianwu Yue Bin Lin Yu Gong National Key Laboratory of Antenna and Microwave Technology Xidian University Xi'an 710071 China College of Information Engineering Dalian Maritime University Dalian 116026 China

ISBN: (纸本)078039335X

We study the performance of space-time block coding in terms of different transmission matrices over Nakagami-m fading channels in multiple-input multiple-output (MIMO) environments. A closed-form expression for the exact symbol error rate (SER) of orthogonal space-time block coding (OSTBC) over independent identically distributed Nakagami-m fading channels can be derived by means of the equivalent single-input single-output (SISO) model. The exact SERs of OSTBC with M-PSK and M-QAM modulations are expressed in terms of the moment generating function (MGF) of instantaneous SNR as well as the higher transcendental functions. In this paper, we provide performance evaluation results of several codes of OSTBC with the closed-form expressions;also, Monte Carlo simulation results are given, which demonstrate the accuracy of closed-form solutions. In addition, some new observations on the performance results of different code matrices are made.

关键词： MIMO systems Monte Carlo methods Nakagami channels block codes channel coding error statistics method of moments space-time codes Monte Carlo simulation Nakagami-m fading channels moment generating function multiple-input multiple-output orthogonal space multiple input multiple output systems Monte Carlo technique block codes space time block coding Nakagami channels Moment generating function space-time codes Channel coding METHOD OF MOMENTS Fading channels

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Power-efficient relay selection in cooperative networks using decentralized distributed space-time block coding

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EURASIP JOURNAL ON ADVANCES IN SIGNAL PROCESSING 2008年第unknown期2008卷 362809-1-362809-10-0页

作者： Zhang, Lu Cimini, Leonard J., Jr. Univ Delaware Dept Elect & Comp Engn Newark DE 19716 USA

Distributed space-time block coding (Dis-STBC) achieves diversity through cooperative transmission among geographically dispersed nodes. In this paper, we present a power-efficient relay-selection strategy for decentralized Dis-STBC in a selective decode-and-forward cooperative network. In particular, for a two-stage network, each decoded node broadcasts a small amount of information with limited power. This node then utilizes its own and its neighbors' information to decide whether or not to act as a relay for the source information. In this way, only part of the decoded set will act as relays. Further, by applying the idea of this relay-selection strategy to each relaying hop in a multihop network, a power-efficient hop-by-hop routing strategy is formulated. The outage analyses and simulations are presented to illustrate the advantage of these strategies. Copyright (c) 2008 L. Zhang and L. J. Cimini Jr.. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

关键词： Information source relay wireless multi-hop networks space time block coding Distribute block codes Decentralized

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Design of Two Way Relay Network Using space-time block Coded Network coding and Linear Detection

Design of Two Way Relay Network Using Space-Time Block Coded...

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IEEE 79th Vehicular Technology Conference (VTC-Spring)

作者： Duc Hiep Vu Van Bien Pham Xuan Nam Tran Chi Hieu Ta Le Quy Don Tech Univ Cau Giay Ha Noi Vietnam

ISBN: (纸本)9781479944828

This paper presents a design of two-way two-hop relay network using physical layer network coding (PNC) in which multiple antennas are used at all nodes. For transmission over the multiple-input multiple-output channels, the Alamouti's space-time block code (STBC) is used for transmission while linear detection is used for signal estimation at all nodes. In order to facilitate linear detection, we develop an equivalent multiuser STBC model for the proposed network and design the sum-and-difference matrix which is suitable for signal estimation. Simulation results show that the proposed network achieves diversity order 2 with polynomial complexity.

关键词： MIMO communication antenna arrays computational complexity matrix algebra network coding relay networks (telecommunication) signal processing space-time block codes Alamouti space-time block code MIMO channels PNC diversity order 2 equivalent multiuser STBC model linear detection multiple antennas multiple-input multiple-output channels physical layer network coding polynomial complexity signal estimation sum-and-difference matrix two-way two-hop relay network design Antennas Estimation MIMO Network coding Relay networks (telecommunications) Vectors linear detection Network coding Signal estimation space time block coding multiple antenna PNC MIMO communication matrix algebra Antenna arrays multiple input multiple output systems ANTENNA signal processing complexity classes Relay networks

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Relationships between Diversity Techniques and Channel coding Rates for OFDM Systems

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IEICE TRANSACTIONS ON COMMUNICATIONS 2010年第1期E93B卷 195-197页

作者： Rim, Minjoong Dongguk Univ Dept Informat & Commun Engn Seoul South Korea

This paper addresses the relationships between diversity techniques and channel coding rates for OFDM systems. While a low channel coding rates is required if cyclic delay diversity is applied, the necessity of a low ... 详细信息

关键词： OFDM channel coding rate diversity space time block coding cyclic delay diversity

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space-time block Coded Reconfigurable Intelligent Surface-Based Received Spatial Modulation

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IEEE TRANSACTIONS ON MOBILE COMPUTING 2024年第12期23卷 11564-11575页

作者： Bayar, Ferhat Salan, Onur Ilhan, Haci Aydin, Erdogan Sci & Technol Res Council Turkey TUBITAK TR-41470 Kocaeli Turkiye TUBITAK BILGEM Commun & Signal Proc Res HISAR Lab TR-41470 Kocaeli Turkiye Yildiz Tech Univ Dept Elect & Commun Engn TR-34220 Istanbul Turkiye Istanbul Medeniyet Univ Dept Elect & Elect Engn TR-34857 Istanbul Turkiye

Reconfigurable intelligent surface (RIS) structures reflect incident signals by adjusting phase adaptively according to the channel condition during transmission to increase signal quality at the receiver. Spatial modulation (SM) technique is a potential candidate for future energy-efficient wireless communications due to its ability to provide better throughput, low-cost implementation, and good error performance. Also, Alamouti's space-time block coding (ASBC) is an important space and time coding technique for the diversity gain and simplified maximum likelihood (ML) detection. In this paper, we propose the RIS-assisted received spatial modulation (RSM) scheme with ASBC, namely RIS-RSM-ASBC, for next-generation wireless networks. The RIS in the proposed system model is separated into two parts, each used as an access point (AP) to transmit its Alamouti coded information while reflecting passive signals to the selected receive antenna. We design the optimal ML detector for the proposed RIS-RSM-ASBC scheme. Furthermore, we present the greedy detector (GD) to reduce the complexity of the ML detector. Extensive computer simulations are performed to corroborate theoretical derivations. The results show that the RIS-RSM-ASBC system is highly reliable and provides data rate enhancement compared to traditional RIS-assisted transmit SM (RIS-TSM), RIS-assisted transmit quadrature SM (RIS-TQSM), RIS-assisted received SM (RIS-RSM), RIS-assisted transmit space shift keying with ASBC (RIS-TSSK-ASBC), and RIS-assisted TSSK with Vertical-Bell Laboratories Layered space-time (RIS-TSSK-VBLAST) schemes.

关键词： Modulation Reconfigurable intelligent surfaces Receiving antennas MIMO communication Detectors Wireless communication Indexes space time block coding Alamouti's scheme performance analysis reconfigurable intelligent surface spatial modulation maximum likelihood greedy detector

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Blind digital modulation classification for STBC-OFDM system in presence of CFO and channels estimation errors

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IET COMMUNICATIONS 2019年第17期13卷 2827-2833页

作者： Dehri, Brahim Besseghier, Mokhtar Djebbar, A. B. Dayoub, Iyad Univ Djillalil Liabes Sidi Bel Abbes Lab TTNS Sidi Bel Abbes Algeria Univ Mustapha Stambouli Mascara Mascara Algeria Univ Lille Univ Polytech Hautsde De France CNRS ISENCent LilleUMR 8520IEMNDOAE Valenciennes France

Here, the authors propose a robust blind digital modulation classification (BDMC) algorithm for space time block coding (STBC)-based MIMO-OFDM system in the presence of carrier frequency offset (CFO) and channel estimation errors. Previous papers published on the topic of modulation identification were limited to single-carrier systems operating over frequency-flat channels. The problem of joint channel and CFO estimation in conjunction with blind digital modulation classification for STBC-OFDM in frequency selective channel and in the presence of the impulsive noise has not been addressed before to the best of their knowledge. To cope with performance degradation of BDMC due to CFO and channels errors, they propose joint semi-blind CFO and channels estimation methods. Higher order statistics (HOS), used for feature extraction, are combined with pattern recognition methods to solve the modulation identification problem. The main contribution of their work is the development of estimators, the study of their impacts on the blind classification capability, and the use of simulations to demonstrate the superior performance of the proposed algorithms.

关键词： higher order statistics channel estimation feature extraction OFDM modulation signal classification MIMO communication space-time block codes impulse noise frequency selective channel modulation identification problem STBC-OFDM system channel estimation errors single-carrier systems frequency-flat channels carrier frequency offset robust blind digital modulation classification algorithm space time block coding MIMO-OFDM system semiblind CFO estimation BDMC algorithm higher order statistics HOS feature extraction impulsive noise pattern recognition methods

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