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A space-time block Coded Spatial Modulation From (n, k) Error Correcting Code

IEEE WIRELESS COMMUNICATIONS LETTERS 2014年第1期3卷 54-57页

作者： Wang, Lei Chen, Zhigang Wang, Xia Xi An Jiao Tong Univ Sch Elect & Informat Engn Xian 710049 Peoples R China

In this letter, a high-rate space-time block coded (STBC) spatial modulation (SM) scheme called STBC-SM(n, k) is presented, in which according to the codewords of the (n, k) error correcting code (ECC), different pairs of antennas are activated to transmit STBC. For nT = 2n transmit antennas, the STBCSM(n, k) scheme can achieve the flexible transmission rates. Furthermore, two rotation angles are optimized to guarantee the transmit diversity of two for STBC-SM(n, k). Owing to the orthogonality of STBC, the new design enables a low-complexity maximum likelihood (ML) decoder. Simulation results are presented to verify the performance of the proposed scheme.

关键词： MIMO systems space-time block coding spatial modulation transmit diversity

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Performance of Optimum and Suboptimum Receivers for space-time Coded Systems in Correlated Fading

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IEEE TRANSACTIONS ON COMMUNICATIONS 2009年第5期57卷 1237-1241页

作者： Mallik, Ranjan K. Garg, Parul Indian Inst Technol Dept Elect Engn New Delhi 110016 India Netaji Subhas Inst Technol Div Elect & Commun Engn New Delhi 110078 India

We consider a space-time coded system in a correlated Rayleigh flat fading environment with imperfect channel estimation. Two receiver structures are considered: a suboptimum receiver and the optimum maximum likelihoo... 详细信息

关键词： Channel estimation correlated Rayleigh flat fading pairwise error probability (PEP) receive correlation space-time block coding

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ENHANCED PERFORMANCE USING STBC AIDED coding FOR LED-BASED MULTIPLE INPUT SINGLE OUTPUT VISIBLE LIGHT COMMUNICATION NETWORK

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MICROWAVE AND OPTICAL TECHNOLOGY LETTERS 2015年第12期57卷 2943-2946页

作者： Shi, Jianyang Wang, Yiguang Huang, Xingxing Tao, Li Chi, Nan Fudan Univ Key Lab Informat Sci Electromagnet Waves MoE Dept Commun Sci & Engn Shanghai 200433 Peoples R China

Light-emitting diode-based (LED) visible light communication (VLC) has become a candidate in next generation ultrahigh-speed indoor wireless local area network. Within this scenario, it is most likely for a receiver to obtain the signals from multiple LED sources, which in general brings about interference among the transmitters and may result in failure detection. In this article, space-time block coding (STBC), as a representative multiple antenna techniques, is adopted to enhance the VLC network performance for its effective suppression on the intertransmitter interference. We experimentally demonstrate a multiple input single output VLC network consisting of two RGB-LEDs. Using STBC-OFDM coding, a total throughput of 500 Mb/s is achieved and the free space transmission reach can be extended as long as 5 m. As far as we know, it is the fastest speed and longest distance in multiple antenna VLC network using STBC coding. Both theoretical simulation and experimental investigation reveal great improvements in the robustness, flexibility, and compatibility of a LED-VLC network due to the appropriate coding scheme. (C) 2015 Wiley Periodicals, Inc.

关键词： space-time block coding visible light communication OFDM

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Closed-form blind MIMO channel estimation for orthogonal space-time block codes

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IEEE TRANSACTIONS ON SIGNAL PROCESSING 2005年第12期53卷 4506-4517页

作者： Shahbazpanahi, S Gershman, AB Manton, JH Univ Ontario Inst Technol Fac Engn & Appl Sci Oshawa ON L1H 7K4 Canada Tech Univ Darmstadt Dept Commun Syst Darmstadt Germany Australian Natl Univ Dept Informat Engn Canberra ACT 0200 Australia

In this paper, a new computationally simple approach to blind decoding of orthogonal space-time block codes (OSTBCs) is proposed. Using specific properties of OSTBCs, the authors' approach estimates the channel matrix in a closed form and in a fully blind fashion. This channel estimate is then used in the maximum-likelihood (ML) receiver to decode the information symbols. The proposed estimation technique provides consistent channel estimates, and, as a result, the performance of the authors' blind ML receiver approaches that of the coherent NIL receiver, which exploits the exact channel state information (CSI). Simulation results demonstrate the performance improvements achieved by the proposed blind decoding algorithm relative to the popular differential space-time modulation scheme.

关键词： MIMO channel estimation space-time block coding

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An adaptive transmission protocol for exploiting diversity and multiplexing gains in wireless relaying networks

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EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING 2015年第1期2015卷 1页

作者： El Astal, Mohammed Taha O. Abu-Hudrouss, Ammar M. Salmon, Brian P. Olivier, Jan Corne Univ Tasmania Sch Engn Hobart Tas 7001 Australia Univ Tasmania ICT Hobart Tas 7001 Australia IUG Univ Dept Elect Engn Gaza Israel

Wireless relaying networks with distributed space-time block codes have been shown to provide high link reliability. This is because of the space diversity gain from multiple transmitting relays, which improves by adding more relays. The drawback of this approach is the overall reduction in throughput of the network. In this paper, we propose a method to construct a distributed space-time block code that is combined with spatial modulation to find a flexible trade-off between reliability and throughput. This proposed method is not restricted to a specific number of relays and can be constructed as necessary. The constructed code also uses a novel adaptive transmission protocol to achieve higher space diversity, even with relays equipped with a single antenna. This protocol assumes use of coherent detection, meaning that a perfect channel estimation is available at the destination. Lastly, a new decoder is proposed that offers significant reduction in complexity to maintain high data throughput. All claims in this work are supported with theoretical analysis and backed up with empirical results.

关键词： Spatial modulation Spatial diversity Wireless relaying networks space-time block coding

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Blind Identification of Spatial Multiplexing and Alamouti space-time block Code via Kolmogorov-Smirnov (K-S) Test

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IEEE COMMUNICATIONS LETTERS 2014年第10期18卷 1711-1714页

作者： Mohammadkarimi, Mostafa Dobre, Octavia A. Mem Univ Newfoundland Fac Engn & Appl Sci St John NF A1B 3X5 Canada

A novel algorithm for blind identification of spatial multiplexing and Alamouti space-time block code is proposed in this paper. It relies on the Kolmogrov-Smirnov test, and employs the maximum distance between the empirical cumulative distribution functions of two statistics derived from the received signal. The proposed algorithm does not require estimation of the channel coefficients, noise statistics and modulation type, and is robust to the carrier frequency offset and impulsive noise. Additionally, it outperforms the algorithms in the literature under a variety of transmission impairments.

关键词： Signal identification Kolmogrov-Smirnov test space-time block coding multiple antenna systems

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Burst-based orthogonal ST block coding for CPM

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IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS 2007年第4期6卷 1208-1212页

作者： Silvester, A.-M. Schober, R. Lampe, L. Univ British Columbia Vancouver BC V6T 1Z4 Canada

In this paper, we propose a simple orthogonal space-time block coding (OSTBC) technique for continuous-phase modulation (CPM). Although the straightforward combination of orthogonal designs (ODs) and CPM was deemed impossible in [11, [2], we show that this is easily accomplished with a burst-based approach. In fact, using the proposed technique ODs can be combined with any CPM scheme. After an appropriate ST combining at the receiver, the same detection techniques as in case of single-antenna transmission can be applied. This is a significant advantage over previously proposed ST coding schemes for CPM. We also derive accurate approximations for the bit error rate and the frame error rate of CPM with OSTBC. Both analysis and simulations show in good agreement the excellent performance of the proposed scheme.

关键词： space-time block coding continuous-phase modulation fading channels diversity

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space-code CS-CDMA systems over MISO frequency-selective Rayleigh fading channels

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IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS 2008年第3期7卷 769-773页

作者： Weerasinghe, Nalin S. Chen, Dianjun Hashimoto, Takeshi Univ Electrocommun Chofu Tokyo 1828585 Japan

We propose a transmit diversity CDMA scheme which is a combination of convolutional spreading (CS) and space-time spreading (STS) over multiple-input single-output (MISO) multipath Rayleigh fading channels. With our scheme, multiuser detection over an MISO multipath channel is transformed to single-user detection over a single-input single-output (SISO) multipath channel as the scheme by Petre et al. Because of its simple configuration, it is immediate to see that our scheme realizes full transmit- and path-diversity for two transmit antennas. We extend the system to four transmit antennas employing quasi-orthogonal construction and show a necessary and sufficient condition for full transmit- and path-diversity to be realized. The proposed scheme requires less hardware complexity and less latency than the one by Petre et al.

关键词： code-division multiple access (CDMA) convolutional spreading equalization full diversity multipath fading channels space-time block coding space-code CDMA

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Performance investigation of space-time block coded multicarrier DS-CDMA in time-varying channels

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ETRI JOURNAL 2006年第5期28卷 684-687页

作者： Narzullaev, Anvar Ryu, Kwanwoong Park, Yongwan Yeungnam Univ Dept Informat & Commun Engn Gyongsan South Korea

In this letter we evaluate the system performance of a space-time block coded (STBC) multicarrier (MC) DS-CDMA system over a time selective fading channel, with imperfect channel knowledge. The average bit error rate impairment due to imperfect channel information Is investigated by taking into account the effect of the STBC position. We consider two schemes: STBC after spreading and STBC before spreading in the MC DS-CDAM system. In the scheme with STBC after spreading, STBC is performed at the chip level;in the scheme with MC before spreading, STBC is performed at the symbol level. We found that these two schemes have various channel estimation errors, and that the system with STBC before spreading is more sensitive to channel estimation than the system with STBC after spreading. Furthermore, derived results prove that a high spreading factor (SF) in the MC DS-CDAM system with STBC before spreading leads to high channel estimation error whereas for a system with STBC after spreading this statement is not true.

关键词： space-time block coding MC DS-CDMA channel estimation error

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Closed-loop transmit diversity schemes for five and six transmit antennas

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IEEE SIGNAL PROCESSING LETTERS 2005年第2期12卷 130-133页

作者： Milleth, JK Giridhar, K Jalihal, D Indian Inst Technol Dept Elect Engn Telecommun & Comp Networks Grp Madras 600036 Tamil Nadu India

Closed-loop, rate-one, channel orthogonalized space-time block codes (CO-STBCs) for three and four transmit antennas using a single (real) phase feedback term have been proposed [1]. These codes achieve full diversity and result in maximum likelihood (ML) decoding with only linear processing at the receiver similar to OSTBCs. In this paper, we propose a closed-loop STBC for five and six transmit antennas with rate 3/4, where the one parameter feedback angle can be evaluated in closed form. These codes achieve full diversity and are delay optimal. Simulation results comparing the error-rate performance of the CO-STBC with open-loop OSTBC as well as some quasiorthogonal space-time block codes are also provided. While the 1- to 5-dB gain accrued by the closed-loop scheme (over the open-loop methods) is not surprising, the novel contribution of this work is in the approach taken to derive the feedback parameter as a single phase term, which is purely a function of the channel gains.

关键词： closed-loop diversity orthogonal STBC space-time block coding

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