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Performance analysis of MIMO systems with arbitrary number transmit antenna selection and OSTBC in the presence of imperfect CSI

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Science China(Information Sciences) 2016年第8期59卷 164-179页

作者： Xiangbin YU Xiang-Gen XIA Shuhung LEUNG Department of Electronic Engineering Nanjing University of Aeronautics and Astronautics Department of Electrical and Computer Engineering University of Delaware Department of Electronic Engineering City University of Hong Kong State Key Laboratory of Millimeter Waves City University of Hong Kong

In this paper, the performance analysis of MIMO systems with arbitrary number transmit antenna selection(TAS) and orthogonal space-time block coding(STBC) in Rayleigh fading channels for imperfect channel state information(CSI) is presented. For the performance analysis, the moment generating function of the system effective SNR as well as its upper and lower bounds are derived. Then, accurate and approximate expressions of bit error rate(BER) of MIMO-TAS-STBC with MPSK and MQAM are further derived. Using the approximate BER formula and imperfect CSI, an adaptive antenna selection scheme is developed for minimizing the BER. The diversity gain and coding gain are analyzed at high SNR. The results indicate that the MIMOTAS-STBC for imperfect CSI can only achieve partial diversity order K N and the coding gain is affected by K,N, code rate, modulation pattern, and channel correlation coefficients, when K transmit antennas are selected and N receive antennas are used. Simulation results show that the theoretical analysis matches the simulation result well, and the approximate expressions are close to the accurate ones but have a lower complexity.

关键词： MIMO arbitrary number antenna selection imperfect CSI space-time block coding diversity gain bit error rate

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Virtual multiple input multiple output in multiple high-altitude platform constellations

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IET COMMUNICATIONS 2009年第11期3卷 1704-1715页

作者： Celcer, T. Javornik, T. Mohorcic, M. Kandus, G. Jozef Stefan Inst Dept Commun Syst SI-1000 Ljubljana Slovenia

Multiple-input multiple-output (MIMO) technology, which makes use of the spatial dimension by utilising multiple antennas at the transmitter and receiver, has proved an efficient solution for providing higher data throughput and/or link reliability in wireless systems. In this study, the authors investigate a virtual MIMO (V-MIMO) technique, based on a constellation of multiple high-altitude platforms (HAPs), providing broadband wireless access to high-speed trains under predominantly line-of-sight (LOS) propagation conditions. They analyse the performance of transmit diversity based on space-time block coding (STBC), in particular Alamouti and extended Alamouti schemes, using fixed wide-lobe receive antennas, and compare it to the reference receive diversity scheme based on best HAP selection that requires highly directional and steerable antennas. Simulation results for different diversity schemes are based on the calculation of carrier to interference-plus-noise ratio (CINR) along representative railway lines in a realistic terrain configuration. The CINR levels obtained are mapped onto transmission modes specified by standards developed for two wireless systems operating at distinct frequency bands, the DVB-S2 assumed for operation in mm-wave bands and the IEEE 802.16e (mobile WiMAX) for operation at 3.5 GHz. Simulation results show that the use of transmit diversity schemes in a multiple HAP constellation decreases the link outage and also increases the average spectral efficiency, but requires a marked increase in transmit power, especially for the system operating in mm-wave bands.

关键词： virtual multiple-input multiple-output technology reference receive diversity scheme railway communication carrier-to-interference-plus-noise ratio MIMO technology frequency 3.5 GHz IEEE 802.16 extended Alamouti schemes fixed wide-lobe receive antennas DVB-S2 multiple antennas space-time codes Codes line-of-sight propagation radio access networks high-altitude platform constellations broadband networks steerable antenna Mobile radio systems terrain configuration directional antenna diversity reception transmit diversity broadband wireless access transmitting antennas directive antennas wireless systems railway lines spatial dimension antenna arrays space-time block coding link reliability Antenna arrays receiving antennas mm-wave bands high altitude stratospheric platforms mobile WiMax MIMO communication

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Capacity and Error Performance Verification of Multi-Antenna Schemes in Radio-Over-Fiber Distributed Antenna System

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JOURNAL OF LIGHTWAVE TECHNOLOGY 2016年第20期34卷 4779-4785页

作者： Aighobahi, Anthony E. Gomes, Nathan J. Univ Kent Sch Engn & Digital Arts Commun Res Grp Canterbury CT2 7NT Kent England

A radio-over-fiber distributed antenna system permits larger physical separation between antennas in a wireless system's infrastructure;this investigation verifies that improved performance-lower error rates and higher capacities-can thus be achieved. In this paper, specific single-input multiple-output (SIMO), multiple-input single-output (MISO), and multiple-input multiple-output (MIMO) algorithms are compared in an experimental radio over fiber system, using user-defined processing functions for the signals. It is shown that significantly reduced symbol error rate (SER) and modestly increased capacity is achieved for a wireless 1 x 2 SIMO uplink using the maximal ratio combining processing algorithm and 2 x 1 MISO downlink using the Alamouti space time block coding scheme. Further, SER is reduced for a downlink 2 x 2 wireless MIMO using the zero-forcing algorithm while, most importantly, greatly increased capacity is achieved through the spatial multiplexing gain.

关键词： Distributed antenna system (DAS) maximum-ratio combing multiple-input multiple-output (MIMO) radio-over-fiber (RoF) system space-time block coding zero-forcing

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On the performance of multi-hop wireless relay networks

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WIRELESS COMMUNICATIONS & MOBILE COMPUTING 2014年第1期14卷 145-160页

作者： Jaafar, Wael Ajib, Wessam Haccoun, David Ecole Polytech Dept Elect Engn Montreal PQ H3C 3A7 Canada Univ Quebec Dept Comp Sci Montreal PQ H3C 3P8 Canada

User cooperation has evolved as a popular coding technique in wireless relay networks (WRNs). Using the neighboring nodes as relays to establish a communication between a source and a destination achieves an increase of the diversity order. The relay nodes can be seen as a distributed multi-antenna system, which can be exploited for transmit diversity by using distributed space-time block coding (STBC). In this paper, we investigate the bit error rate (BER) of multi-hop WRNs employing distributed STBC at the relay nodes. We develop the general model of WRNs using distributed STBC, and we derive the pairwise error probability and an approximation of the BER. We examine the impact of several parameters, such as distributed STBC at the relays, the number of relays, the distances between the nodes, and the channel state information available at the receivers, on the BER performance of the multi-hop WRN. The obtained results provide guidelines about the expected error performance and the design of channel estimation for these networks. Copyright (c) 2011 John Wiley & Sons, Ltd.

关键词： relay networks space-time block coding channel state information multi-hop

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Cooperative Distributed Antenna Transmission for 5G Mobile Communications Network

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IEICE TRANSACTIONS ON COMMUNICATIONS 2017年第8期E100B卷 1190-1204页

作者： Adachi, Fumiyuki Boonkajay, Amnart Seki, Yuta Saito, Tomoyuki Kumagai, Shinya Miyazaki, Hiroyuki Tohoku Univ Sendai Miyagi 9808579 Japan Tohoku Univ Res Org Elect Commun Sendai Miyagi 9808579 Japan

In this paper, the recent advances in cooperative distributed antenna transmission (CDAT) are introduced for spatial diversity and multi-user spatial multiplexing in 5G mobile communications network. CDAT is an advanced version of the coordinated multi-point (CoMP) transmission. space-time block coded transmit diversity (STBC-TD) for spatial diversity and minimum mean square error filtering combined with singular value decomposition (MMSE-SVD) for multi-user spatial multiplexing are described under the presence of co-channel interference from adjacent macro-cells. Blind selected mapping (blind SLM) which requires no side information transmission is introduced in order to suppress the increased peak-to-average signal power ratio (PAPR) of the transmit signals when CDAT is applied. Some computer simulation results are presented to confirm the effectiveness of CDAT techniques.

关键词： 5G mobile communications network distributed antenna network cooperative signal transmission space-time block coding multi-user communication signal peak suppression

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Performance evaluation at the system level of reconfigurable space-time coding techniques for HSDPA

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EURASIP JOURNAL ON APPLIED SIGNAL PROCESSING 2005年第11期2005卷 1656-1667页

作者： Peppas, K Alexiou, A Lazarakis, F Al-Gizawi, T Axiotis, DI Natl Tech Univ Athens Inst Commun & Comp Syst GR-15773 Athens Greece Bell Labs Lucent Technol Wireless Res Swindon SN5 7DJ Wilts England Demokritos Natl Ctr Sci Res Inst Informat & Telecommun GR-15310 Athens Greece

A reconfigurable space-time coding technique is investigated, for a high-speed downlink packet access multiple-antenna network, which combats the effects of antenna correlation. Reconfigurability is achieved at the link level by introducing a linear precoder in a space-time block coded system. The technique assumes knowledge of the long-term characteristics of the channel, namely the channel correlation matrix at the transmitter. The benefits of the proposed reconfigurable technique as compared to the conventional non-reconfigurable versions are evaluated via system-level simulations. In order to characterize the system-level performance accurately and, at the same time, use a feasible approach in terms of computational complexity, a suitable link-to-system interface has been developed. The average system throughput and the number of satisfied users are the performance metrics of interest. Simulation results demonstrate the performance enhancements achieved by the application of reconfigurable techniques as compared to their conventional counterparts.

关键词： space-time block coding linear precoding reconfigurability system-level performance link-to-system level interface high-speed downlink packet access

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TCP performance over wireless MIMO channels with ARQ and packet combining

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IEEE TRANSACTIONS ON MOBILE COMPUTING 2006年第3期5卷 208-223页

作者： Toledo, AL Wang, XD Columbia Univ Dept Elect Engn New York NY 10027 USA

Multiple-input multiple-output (MIMO) wireless communication systems that employ multiple transmit and receive antennas can provide very high-rate data transmissions without increase in bandwidth or transmit power. For this reason, MIMO technologies are considered as a key ingredient in the next generation wireless systems, where provision of reliable data services for TCP/IP applications such as wireless multimedia or Internet is of extreme importance. However, while the performance of TCP has been extensively studied over different wireless links, little attention has been paid to the impact of MIMO systems on TCP. This paper provides an investigation on the performance of modern TCP systems when used over wireless channels that employ MIMO technologies. In particular, we focus on two representative categories of MIMO systems, namely, the BLAST systems and the space-time block coding ( STBC) systems, and how the ARQ and packet combining techniques impact on the overall TCP performance. We show that, from the TCP throughput standpoint, a more reliable channel may be preferred over a higher spectral efficient but less reliable channel, especially under low SNR conditions. We also study the effect of antenna correlation on the TCP throughput under various conditions.

关键词： TCP/IP MIMO BLAST space-time block coding ARQ packet combining antenna correlation

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Performance Analysis of Rate-Adaptive Modulation with Imperfect Estimation in space-time Coded MIMO System

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WIRELESS PERSONAL COMMUNICATIONS 2011年第2期57卷 181-194页

作者： Yu, Xiangbin Leung, S. H. Nanjing Univ Aeronaut & Astronaut Coll Informat Sci & Technol Nanjing 210016 Peoples R China Southeast Univ Natl Mobile Commun Res Lab Nanjing Peoples R China City Univ Hong Kong Dept Elect Engn Kowloon Hong Kong Peoples R China

Based on the imperfect estimation information, the performance analysis of multi-input multi-out (MIMO) systems with rate-adaptive modulation and space-time coding over flat Rayleigh fading channels is presented in this paper. The fading gain value is partitioned into a number of regions by which the modulation is adapted according to the region the fading gain falls in. Under a target bit error rate (BER) and constant power constraint, the fading gain region boundaries are given. By utilizing the minimum mean squared error estimation, the correlation between the channel gains and their estimates, which contributes to imperfect channel information, is evaluated. With this correlation, the probability density function of fading gain is obtained. Based on these results, the closed-form expressions for the SE and average BER are derived in detail, respectively. The theoretical expressions will be more accurate than the existing schemes, and they include perfect estimation as a special case. Numerical results show that the SE and BER of the system with imperfect estimation are worse than those with perfect estimation due to the estimation error. Moreover, the simulation results for SE and BER are in good agreement with the theoretical analysis.

关键词： space-time block coding Adaptive modulation Spectrum efficiency Multi-input multi-output (MIMO) system Imperfect estimation

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Non-coherent and mismatched-coherent receivers for distributed STBCs with amplify-and-forward relaying

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IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS 2007年第11期6卷 4060-4070页

作者： Mheidat, Hakain Uysal, Murat Univ Toronto Dept Elect & Comp Engn Toronto ON M5S 3G4 Canada Univ Toronto Dept Elect & Comp Engn Toronto ON N2G 3LI Canada

Cooperative diversity is a transmission technique where multiple nodes in a network cooperate to form a virtual antenna array realizing the benefits of spatial diversity in a distributed fashion. The coherent scenario considered in most existing work on cooperative diversity assumes the availability of perfect channel state information at the relay and destination terminals and is highly unrealistic in practical applications. In this paper, we investigate non-coherent and mismatched-coherent receivers for a cooperative diversity scheme assuming both quasi-static and time-varying fading channels for the underlying cooperative links. Specifically, we consider a distributed space-time block coded (STBC) system in a single-relay scenario operating in the amplify-and-forward relaying mode. Exploiting the orthogonal structure of distributed STBC, we first derive a non-coherent decoding rule which can be implemented in practice by a Viterbi-type algorithm. Although this decoding rule has been derived assuming quasi-static channels, its inherent channel tracking capability allows its deployment over time-varying channels with a promising performance as a sub-optimal solution. As a possible alternative to non-coherent detection, we investigate the performance of mismatched -coherent receiver (i.e., coherent detection with imperfect channel estimation) within the considered relay-assisted transmission scenario. We further compare the performance of non-coherent and mismatched-coherent receivers to reveal their robustness under various mobility scenarios.

关键词： cooperative diversity space-time block coding non-coherent detection imperfect channel estimation fading channels

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A general scheme for equalization of space-time block-coded systems with unknown CSI

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IEEE TRANSACTIONS ON SIGNAL PROCESSING 2006年第7期54卷 2737-2746页

作者： Ding, Zhiguo Ward, Darren B. Chin, Woon Hau Queens Univ Belfast Inst ECIT Belfast BT3 9DT Antrim North Ireland Univ London Imperial Coll Sci Technol & Med Dept Elect & Elect Engn Commun & Signal Proc Grp London SW7 2BT England Inst Infocomm Res Singapore 119613 Singapore

Recently, space-time block codes (STBCs) have gained much attention as an effective transmit diversity technique to increase the capacity of wireless communication systems. In this paper, we consider a general technique for direct equalization of space-time block-coding systems with unknown channel state information (CSI). This technique is suitable for several existing hybrid STBC schemes, such as STBC/orthogonal-frequency-division multiplexing (STBC-OFDM) and STBC/code-division multiple access (STBC-CDMA). We show that by exploiting the redundancy in the structure of STBC, a zero-forcing equalizer can be constructed without channel estimation. The conditions for the identifiability of the zero-forcing equalizer are also derived to ensure correct equalization. To further improve the performance of the proposed method, a new iterative algorithm is developed by incorporating the finite alphabet property of information symbols. Simulation results show that the proposed algorithms can outperform comparative schemes in most simulation conditions.

关键词： code-division multiple access (CDMA) identifiability orthogonal-frequency-division multiplexing (OFDM) semi-blind direct equalization space-time block coding

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