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IEEE INTERNATIONAL CONFERENCE ON ELECTRO/INFORMATION TECHNOLOGY (EIT)

作者： Norouzi, Mandana Attang, Edidiong Wu, Yuteng Ellis, Robert B. Atkin, G. E. IIT Dept Elect & Comp Engn Chicago IL 60616 USA

ISBN: (纸本)9781479988020

In this paper, we study the performance of space time block code (STBC) under the constraint that the receiver must rely on imperfect channel state information. This is done in order to verify and compare the performance that can be expected in an actual space time code system. The sensitivity and robustness of space-time block codes to varying levels of error in the amplitude and phase of the estimates will be illustrated using a series of simulations. This new information could be used to help design and verify the performance of a channel estimation scheme based on the insertion of pilot sequences into the data stream of each transmit antenna. The imperfect channel estimates will be created by taking the actual fading coefficients introduced into the channel and applying some degree of error into either the magnitude or the phase of those coefficients before decoding. This simulates the inability of an estimation scheme to predict the channel characteristics with perfect accuracy.

关键词： space time code channel state information(CSI) channel estimation maximum likelihood

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space time Block code for Four time Slots and Two Transmit Antennas

Space Time Block Code for Four Time Slots and Two Transmit A...

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IEEE INTERNATIONAL CONFERENCE ON ELECTRO/INFORMATION TECHNOLOGY (EIT)

作者： Norouzi, Mandana Attang, Edidong Wu, Yuteng Ellis, Robert B. Atkin, G. E. IIT Dept Elect & Comp Engn Chicago IL 60616 USA

ISBN: (纸本)9781479988020

In this paper a special space time coding is proposed for communication systems which is equipped with four time solts and two antennas. The launched code has full rate and full diversity and maximum likelihood (ML) decoding requires joint detection of four real symbols. Simulation results for bit error rate (BER) analysis show that the proposed STBC outperforms previously presented schemes.

关键词： space time code BER rate probability of error symbol error rate Maximum likelihood detection

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Orthogonal space time code Based Partial Rank Affine Projection Adaptive Filtering Algorithm

Orthogonal Space Time Code Based Partial Rank Affine Project...

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IEEE International Symposium on Circuits and Systems (ISCAS)

作者： Bhotto, Md. Zulfiquar Ali Ahmad, M. Omair Swamy, M. N. S. Concordia Univ Dept Elect & Comp Engn Montreal PQ H3G 1M8 Canada

ISBN: (纸本)9781479934324

A space time code based partial rank affine projection (PRAP) algorithm is proposed. The proposed algorithm uses an input signal where the input signal matrix X-k becomes an orthogonal matrix. For this input signal, matrix (X-k(T) X-k) becomes a diagonal matrix whose inverse can be easily computed. Thus, the proposed algorithm saves a significant amount of computations. Due to this feature the proposed PRAP algorithm is shown to offer a faster convergence speed and a smaller computational burden per iteration than the NLMS algorithm does.

关键词： space time code partial rank affine projection algorithm adaptive filter

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Symbol Error Rate Analysis for Cooperative Diversity Networks by Distributed Embedded space time code

Symbol Error Rate Analysis for Cooperative Diversity Network...

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IEEE International Conference on Electro/Information Technology (EIT)

作者： Norouzi, Mandana Attang, Edidong Wu, Yuteng Atkin, G. E. IIT Dept Elect & Comp Engn Chicago IL 60616 USA

ISBN: (纸本)9781479947744

In this paper a special version of cooperative distributed space time coding for the relays network is proposed. According to this system model relays cooperatively collaborate with the sources to transmit the space time code to the destination. Process of the transmission consists of two phases. In the first time phase source broadcast the information to the destination and relay. In the next time phase, the source and relay cooperatively send signals to the destination by using an embedded space time coding. Structure of embedded space time code is based on singular value decomposition of circulant matrix. Relays are assumed to be non-regenerative amplify-and-forward. Theoretical analysis for calculating the bit error rate (BER) has been done based on maximum ratio combining (MRC). Simulation results for the case of one relay, one source and destination through the Rayleigh fading channel has been done and compared with the scenario when transmitter and relay used the Alamouti code.

关键词： space time code relay network BER rate probability of error symbol error rate Maximum ratio combiner

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space time code of High Diversity Gain for Dual Polarized MIMO in Hybrid Mobile Satellite Systems

Space Time Code of High Diversity Gain for Dual Polarized MI...

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IEEE 78th Vehicular Technology Conference (VTC Fall)

作者： Cui, Qimei Wang, Kaidong Tao, Xiaofeng Beijing Univ Posts & Telecommun Minist Educ Key Lab Universal Wireless Commun Beijing 100088 Peoples R China

ISBN: (纸本)9781467361873

The hybrid mobile satellite system operating in a single frequency network (SFN) mode is more and more popular, since the combination of satellite component (SC) and terrestrial component (TC) can provide better Quality of Service (QoS). This paper presents a novel way to realize the dual polarization MIMO transmission by using layered space time block code (LSTBC). The theoretical analysis and simulations indicate that the application of LSTBC can improve the system performance dramatically by making use of the space, time and polarization diversity. It provides a higher diversity gain than the previous space time (ST) codes when satellite and terrestrial link are both available. Even if one of the links is lost, it can still work properly and offers a performance equals to the satellite-only or terrestrial-only broadcasting system. Furthermore, it can be extended to the hybrid systems with multiple SCs and TCs.

关键词： MIMO dual polarization mobile satellite system MBMS SFN space time code diversity gain

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Unified OSTBC-based communication scheme for cooperative space vehicles

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JOURNAL OF ENGINEERING-JOE 2019年第21期2019卷 7577-7580页

作者： Geng, Jian Liu, Hongyan Jin, Wen Yan, Xinfeng Xu, Jin Beijing Inst Space Long March Vehicle Beijing Peoples R China Natl Key Lab Sci & Technol Test Phys & Numer Math Beijing Peoples R China

In many spatial cooperative vehicle networks, omni-directional communication is preferred due to its flexibility for networking. In the recent studies, space time code was shown to be an effective approach for improving the performance of the omni-directional communication between space vehicles. This paper studies the unified scheme for the orthogonal space time block code-based transmission between two space vehicles equipped with different numbers of antennas. It is obtained that at most six passive antennas and four RF chains are enough for the typical use. In the proposed scheme, the receiver can perform a unified detection procedure regardless of the actual number of the transmit antennas, which facilitates the practical application. Simulation results validate the proposed scheme in terms of the cumulative distribution function of the received signal-to-noise ratios.

关键词： orthogonal codes transmitting antennas space-time block codes MIMO communication diversity reception space-time codes block codes antenna arrays unified OSTBC-based communication scheme space vehicles spatial cooperative vehicle networks omni-directional communication space time code unified scheme orthogonal space time block code-based transmission unified detection procedure

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A Hybrid Digital Analog Scheme for MIMO Multimedia Broadcasting

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IEEE WIRELESS COMMUNICATIONS LETTERS 2017年第3期6卷 322-325页

作者： Tan, Bin Wu, Jun Cui, Hao Wang, Rui Wu, Jian Liu, Dian Tongji Univ Coll Elect & Informat Engn Shanghai 201804 Peoples R China Jinggangshan Univ Coll Elect & Informat Engn Jian 343009 Jiangxi Peoples R China Coll Elect & Informat Engn Shanghai Peoples R China Tongji Univ Minist Educ Embedded Syst & Serv Comp Key Lab Shanghai 201804 Peoples R China

A new scenario for wireless broadcasting is the antenna heterogeneity. In this letter, we propose a new hybrid digital analog design to make the users attain the perceptual quality commensurate with their antenna numbers. A high resolution video is decomposed into a base layer and an enhancement layer. The base layer is transmitted by the conventional digital space time coding scheme. The enhancement layer is transmitted by the pseudo analog and spatial multiplexing that is applied to provide signal quality commensurate with antenna number of users. Compared with the conventional frameworks, the proposed system achieves a notable margin in the peak signal-to-noise ratio and much better performances for receivers with more antennas.

关键词： Hybrid digital analog MIMO multimedia broadcasting space time code antenna heterogeneity

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A Study on Turbo Equalization for MIMO System based on LDPC codes 8

A Study on Turbo Equalization for MIMO System based on LDPC ...

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8th International Conference on Ubiquitous and Future Networks (ICUFN)

作者： Baek, Chang-uk Jung, Ji-won Korea Maritime & Ocean Univ Dept Radio Commun Engn 727 Taejong Ro Busan South Korea

ISBN: (纸本)9781467399913

In this paper, MIMO (Multiple-Input-Multiple Output) system based on turbo equalization techniques which LDPC (Low Density Parity Check) codes were outer code and STTC (space time Trellis code) were employed as an inner code are studied. LDPC may be applied these system, it must make BCJR output be hard decision data. It caused performance degraded. This paper proposed turbo equalization model for LDPC codes able to apply MIMO system combined with STTC codes. By the simulation results, we confirmed performance of proposed turbo equalization model was improved about 2.5 dB than that of turbo codes and about 11.5dB than that of conventional LDPC codes.

关键词： Multiple-Input Multiple-Output space time code Low Density Parity Check code Layered space time code

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Simulation and experimental research on the Alamouti code for ultraviolet communication

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OPTICAL ENGINEERING 2016年第1期55卷 015101-015101页

作者： Guo, Li Liu, Kunlun Meng, Dedan Mu, Xidong Han, Dahai Beijing Univ Posts & Telecommun Key Lab Univ Wireless Commun Minist Educ 10 Xitucheng Rd Beijing 100876 Peoples R China Inst Informat Photon & Opt Commun 10 Xitucheng Rd Beijing 100876 Peoples R China

The Alamouti code can obtain the diversity gain utilizing the transmitting signal orthogonally without the use of a complicated decoding scheme. The modified Alamouti code for the ultraviolet (UV) communication system is studied in theoretical analysis, MATLAB (R) simulation, and offline experiment. The theoretical analysis and simulation results indicate that the usage of the Alamouti code in the UV communication system can achieve a higher diversity gain and reduce the system bit error rate more effectively than the single-input single-output and single-input multiple-output technologies. The experiments were performed to verify the simulation results. Next, we analyzed the discrepancy between the simulation results and the experimental results. These studies are helpful for UV multiple-input multiple-output communication system design and implementation. (C) The Authors. Published by SPIE

关键词： multiple-input multiple-output space time code Alamouti ultraviolet communication

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Effect of Synchronization Errors on Alamouti Coding in Wireless Sensor Networks

Effect of Synchronization Errors on Alamouti Coding in Wirel...

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IEEE Wireless Communications and Networking Conference

作者： Wan, Haitao Diouris, Jean-Francois Andrieux, Guillaume Univ Nantes IREENA Ecole Polytech F-44035 Nantes France

ISBN: (纸本)9781424429479

Cooperative transmission using space time codes can be used to reduce transmission energy consumption for long range communication in wireless sensor networks (WSN). However, differing from traditional (multi-input-multi-output) MIMO systems, distributed cooperative communication systems in WSN usually lack of perfect synchronization. For the cooperative systems using Alamouti code, the effect of synchronization error on the receive bit error rate (BER) performance over Rayleigh fading channel is investigated in this paper. Taking also path loss effect and the propagation delay into account, the optimal transmit power allocation and the optimal reception areas are presented. The analytical and simulation results show that, for a small range of synchronization error and using the optimal transmit power allocation, the degradation of receive BER performance is negligible for some reception area.

关键词： Distributed cooperative communication space time code Synchronization error

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