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Signal, Information and Data Processing (ICSIDP), IEEE International Conference on

作者： Yu Keyuan Zhang Limin Jin Kun Yan Wenjun Liu Zhao Naval Aeronautical University Yantai China Naval Aeronautical University 188 Erma Road Yantai China 92429 army Qingdao

ISBN: (数字)9781728123455

ISBN: (纸本)9781728123462

In order to identify the modulation mode of STBC signal in frequency selective fading channel, an improved STBC modulation recognition algorithm based on fourth-order time delay moment is proposed in the condition of single receiving antenna. This algorithm calculates the fourth-order delay moment of spacetime block code at the receiving end, and uses threshold detection method to compare the estimated value of fourth-order delay moment with the threshold interval of theoretical value, and automatically identifies the modulation mode of signal. Simulation results show that the algorithm is not affected by adverse factors such as frequency deviation and phase jitter, and there is little difference between different STBC recognition effects.

关键词： space-time block codes fourth-order delay matrix modulation recognition signal identification space time block coding modulation mode signal recognition block codes Frequency-selective fading channels Phase jitter receiving end Recognition (Psychology) Frequency deviation Moment of force

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Transceiver design for STBC transmission over MIMO multiple-access SC-FDE systems

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TRANSACTIONS ON EMERGING TELECOMMUNICATIONS TECHNOLOGIES 2018年第6期29卷 e3304-e3304页

作者： Sheikh-Hosseini, Mohsen Grad Univ Adv Technol Inst Sci & High Technol & Environm Sci Dept Comp & Informat Technol Kerman Iran

This paper investigates the transceiver design for a multiple-input multiple-output multiple-access system, J cochannel users each having Q antennas and an array-processing receiver employing M receive antennas, in which the single-carrier frequency-domain equalization technique is used as the physical layer solution for the transmission of different space-time block coding (STBC) schemes. Assuming quasi-static fading model and no channel state information at the user terminals, a transceiver design is provided for this system utilizing M=J receive antennas for interference cancellation, frequency-domain equalization, and detection of the users. First, this design is considered for orthogonal and generalized coordinate interleaved orthogonal design STBCs as 2 single-symbol decodable STBC schemes and then extended to quasi-orthogonal STBC as a double-symbol decodable STBC scheme. For this extension, each quasi-orthogonal system of J users and Q transmit antennas is converted to 2 orthogonal subsystems of J cochannel users each having Q antennas and then each subsystem is detected using the proposed method for orthogonal STBC transmission. Finally, the average bit error rate of the obtained designs is numerically illustrated for different STBC schemes with various numbers of users and transmitting antennas.

关键词： Orthogonal Channel state information transmitting antennas space time block coding generalized coordinates SUB-SYSTEM Transceivers

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An inter user interference cancellation scheme for two users in full-duplex MIMO system

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EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING 2018年第1期2018卷 1页

作者： Na, Hyunjong Lee, Chungyong Yonsei Univ Dept Elect & Elect Engn C418 Seoul 03722 South Korea Yonsei Univ Dept Elect & Elect Engn C527 Seoul 03722 South Korea

The inter-user interference is a critical performance degradation factor in a full-duplex multi-user system. However, the conventional pre-processing filters, such as null space projection filter and regularized channel inversion filter, are unsuitable for user pre-processing filter when each user has the same number of transmit and receive antennas. Thus, we propose an inter-user-interference cancellation scheme applicable to the users with the same number of transmit and receive antennas. By summing the received signals for two symbol periods, the proposed scheme can cancel inter-user interference and obtain a twofold diversity order. The simulation results show that the proposed scheme obtains higher spectral efficiency than the half-duplex system.

关键词： Full duplex Inter-user interference space time block coding Adaptive modulation

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Orthogonal STBC for MDL Mitigation in Mode Division Multiplexing System With MMSE Channel Estimation

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JOURNAL OF LIGHTWAVE TECHNOLOGY 2017年第10期35卷 1858-1867页

作者： Hei, Yong Qiang Li, Wen Tao Xu, Xiao Chuan Chen, Ray T. Xidian Univ State Key Lab ISN Xian 710071 Peoples R China Xidian Univ Dept Elect Engn Sci & Technol Antenna & Microwave Lab Xian 710071 Peoples R China Univ Texas Austin Dept Elect & Comp Engn Microelect Res Ctr Austin TX 78758 USA

Mode division multiplexing (MDM) has the potential of increasing the capacity of optical fiber transmission system. However, primary impaired factor mode-dependent loss (MDL) poses fundamental performance limitations. Recently MIMO space time coding technique has provided a potential solution to mitigate the MDL and hence started receiving considerable interests. In this paper, orthogonal space time block coding (OSTBC)-based MDM transmission system was investigated to test its efficiency in mitigating MDL. Considering the importance and necessity of channel estimation for coherent receivers and the paucity of literature on this subject, MMSE channel estimation process was introduced in the MDM system to test the robustness and efficiency of the OSTBC-MDM system in mitigating the MDL. Furthermore, an alternative linear decoding (LD) method was achieved by transferring the orthogonal characteristics of codes in OSTBC to the channel elements in MDM system. The LD method has the same performance as the optimal ML method, excepting that it only exhibits linear computational complexity, in terms of the number of modes and the size of constellations. Simulation results were provided to validate the efficiency and robustness of the proposed OSTBC-MDM system in mitigating the MDL in the presence of MMSE channel estimation.

关键词： Channel estimation maximum likehood mode division multiplexing space time block coding

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CS reconstruction in MIMO channel using square complex orthogonal STB codes

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MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND PROCESSING SYSTEMS 2017年第9期23卷 4289-4306页

作者： Pramanik, Ankita Maity, Santi P. Indian Inst Engn Sci & Technol Sibpur India

Compressed sensing (CS) is the process of signal reconstruction at a rate far below the Nyquist sampling rate. Sometimes, CS measurements need transmission over radio mobile channel for bandwidth preserving and energy efficient system design and/or application specific system design such as wireless body area network (WBAN), remote surveillance system etc. To this aim, this work proposes an integrated system design for quality improvement in CS reconstructed images over radio mobile channel modelled as Rayleigh flat fading. The design of a non-zero-entry Single Symbol Decodable Square Complex Orthogonal, space time block Codes (STBC) for 16 antennas is proposed first. This multi-channel facility is then exploited for transmission of CS measurements, which at the receiver side, undergo Robbins-Monro (RM) method, a non-parametric stochastic approach for predicting the unobserved spaces from the observed ones through recursive filtering. Similar study is also done using a relaxed convex optimization of the basis pursuit algorithm, a parametric based approach. Extensive simulation results highlight the efficacy of the proposed CS and STBC (CS-STBC) scheme for the quality improvement on the reconstructed images as the variation in the number of antennas, change in the number of measurements and variation on signal-to-noise ratio. It also highlights significant performance gain in CS reconstruction over radio mobile channel using STBC framework.

关键词： space time block coding Quality Improvement Signal reconstruction bed shifting

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Performance Improvement for OFDM-RoF Transported 60 GHz System using Spatial Diversity and Multiplexing

Performance Improvement for OFDM-RoF Transported 60 GHz Syst...

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IEEE International Conference on Communications (ICC) / Wireless Communications Symposium / 3rd Workshop on Optical Wireless Communications (OWC)

作者： Habib, Usman Aighobahi, Anthony E. Nair, Manish Zhu, Huiling Quinlan, Terence Walker, Stuart D. Gomes, Nathan J. Univ Kent Commun Res Grp Canterbury Kent England Univ Essex Sch Comp Sci & Elect Engn Colchester Essex England

ISBN: (纸本)9781509015252

60 GHz system architectures with Radio over Fiber (RoF) transport and integrated transmitters/receivers provide a comprehensive solution for future mobile systems. Since 60 GHz communication relies on line-of-sight (LoS) conditions and narrow-beam antennas to compensate the high path-loss, it has limitations in terms of coverage for multiple user locations. In this paper, performance analysis of a 60 GHz integrated transmitter and receiver system supported by RoF transport has been performed experimentally at different user locations for up to 1.5m transmission distance. Extension of experimental results to prove feasibility for longer distances has been shown with a simulation model, whose results at various shorter distances have been benchmarked against the acquired experimental results at different user locations. A modified version of the Saleh Valenzuela channel has been used to model the millimeter wave (mmW) LoS indoor experimental environment. Furthermore, as a proof of concept, we present an experimental analysis demonstrating an improvement in performance of the proposed RoF based 60 GHz system using spatial diversity and multiplexing. Channel measurements at different transmitter/receiver locations and their processing have shown that an improvement (decrease from 12.5% to 10.5%) in Error Vector Magnitude (EVM) can be achieved using the Alamouti space time block coding algorithm. Then it has been shown that a two-fold data rate increase can be obtained by combining data from two transmitter locations using the Zero Forcing algorithm.

关键词： Radio over Fiber Remote Antenna Unit space time block coding Zero Forcing Error Vector Magnitude

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Performance of Source transmit Antenna selection for MIMO cooperative communication System Based DF protocol: Symbol Error Rate and Diversity order

Performance of Source transmit Antenna selection for MIMO co...

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International Conference on Wireless Networks and Mobile Communications (WINCOM)

作者： Bouteggui, Mokhtar Merazka, Fatiha USTHB Univ Telecommun Dept LISIC Lab Algiers Algeria

ISBN: (纸本)9781538621233

In this work, we study the performance of a single relay Multiple Input Multiple Output (MIMO) cooperative communication system based on Decode and Forward (DF) relaying protocol for two strategies using transmit antenna selection at the source. The first strategy uses one antenna between the relay and the destination, and the second strategy uses space time block coding (STBC). All channels follow the Rayleigh fading distribution. We derive the expression and Upper Bound for Symbol Error Rate (SER) for M-ary Phase Shift Keying (M-PSK), and the diversity order for both strategies. The analytical results show that the second strategy performs better than the first one for the same diversity order and the same Rate R.

关键词： MIMO Cooperative Communication Antenna Selection space time block coding

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Implementation of MIMO-OFDM system with space time block Codes using Simulink

Implementation of MIMO-OFDM system with Space Time Block Cod...

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IEEE International Conference on Recent Trends in Electronics, Information & Communication Technology (RTEICT)

作者： Y Bhuvaneshwari S.L Nisha RIT College Digital Communication Engineering

ISBN: (纸本)9781509037056

The Multiple input multiple Output system (MIMO), in conjunction with the Orthogonal Frequency Division Multiplexing (OFDM) is taken into consideration as a promising answer for improving the data rates of upcoming generation wireless communication systems, operate within the frequency selective fading atmosphere. space-time block coding is popularly recognized as the transmit diversity technique which is used to resolve the channel fading issues within the wireless communication system. A MIMO-OFDM system by using STBC for two transmit and two receive antennas has been implemented to reduce the Bit Error Rate for wireless communications. Hence we examine the effect of BER of the proposed system for numerous modulation schemes like Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK), 8-Quadrature Amplitude Modulation (8-QAM), 16-Quadrature Amplitude Modulation (16-QAM), 32-Quadrature Amplitude Modulation (32-QAM), and 64-Quadrature Amplitude Modulation (64-QAM) are simulated using Simulink.

关键词： diversity reception error statistics fading channels MIMO communication OFDM modulation quadrature amplitude modulation quadrature phase shift keying receiving antennas space-time block codes transmitting antennas Quadrature phase shift keying Quadrature amplitude modulation diversity reception Orthogonal frequency division multiplexing Receiving antennas space time block coding MIMO communication transmitting antennas Fading channels Wireless communication systems Bit error rate amplitude modulation Binary phase shift keying Error analysis

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General Rank Beamforming Using High Order OSTBC For Multicasting Networks

General Rank Beamforming Using High Order OSTBC For Multicas...

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WSA 2017;21th International ITG Workshop on Smart Antennas

作者： David Schenck Dima Taleb Marius Pesavento Aydin Sezgin

This work addresses and suggests solutions to the problem of insufficient degrees of freedom in beamforming designs for single-group multicasting networks, where a group of users receives the same information. In our proposed approach we extend the known conventional rank-one, maxmin fair beamforming approach to a general rank beamforming approach. The proposed approach offers more flexibility and serves the users simultaneously with multiple beams. We broaden the concept of [1], where rank-two Alamouti space-time block coding (STBC) has been combined with beamforming by using a higher rank orthogonal space-time block code (OSTBC) instead. The increase of the rank is accompanied with an enhancement of the degrees of freedom and results in more optimal beamformers and an improved reliability. Simulations reveal that the proposed general rank beamforming approach provides a significant improvement in the bit error rate (BER) performance compared with the conventional state of the art approaches in large communication scenarios with many users.

关键词： Beamforming Degree of freedom state of the art Rank of data multicast communication Multicast Consumers PROBLEM SOLUTION space time block coding

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Design of space-time block coded unique word OFDM systems

Design of space-time block coded unique word OFDM systems

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IEEE International Conference on Acoustics, Speech and Signal Processing

作者： Sher Ali Cheema Jianshu Zhang Mario Huemer Martin Haardt Communication Research Laboratory Ilmenau University of Technology Germany Institute of Signal Processing Johannes Kepler University Linz Austria

ISBN: (纸本)9781509041183

In this paper we develop space-time block codes for unique word - orthogonal frequency division multiplexing (UW-OFDM) systems to fully exploit the diversity gain when the channel state information is not available at the transmitter. To this end, we propose two novel space-time block codes (STBCs) for UW-OFDM systems, namely a frequency domain space-time block code and a time-reversal space-time code (TR-STC). The former one is an extension of the traditional space-frequency block codes (SFBCs) for CP-OFDM systems to UW-OFDM systems while the latter one makes use of the frame structure of the UW-OFDM symbols and has a low complexity decoder. Simulation results show that both of the proposed space-time block codes achieve a significant gain compared to the SFBC based CP-OFDM. Moreover, the frequency domain STBC yields a slightly better performance as compared to the TR-STC but has a higher computational complexity.

关键词： Orthogonal Frequency Division Multiplexing (OFDM) Cyclic Prefix (CP) Unique Word (UW) space-time block Codes (STBCs) Multiple-Input Multiple-Output (MIMO) block codes Orthogonal frequency division multiplexing space time block coding FRAMED STRUCTURES Diversity methods Channel state information space-frequency block coding Word complexity classes Frequency-domain analysis Transmitters Not Available spacetime

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