A Deep-Learning Approach to a Volumetric Radio Environment Map Construction for UAV-Assisted Networks by Bethelhem S. Shawel, Dereje H. Woldegebreal, Sofie Pollin

“…In both cases, knowledge of the propagation environment and transmitter locations in 3D space is used to capture the spatial and altitude dependency of the propagation channel’s characteristics. …”
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U-Sodar: Noncontact Vital Sign Detection Technology Based on Ultrasonic Radar by Shuaiming HUANG, Xiaohua ZHU, Wubin WANG, Heng ZHAO, Hong HONG

“…To address these challenges, this paper introduces a noncontact vital signal collection device using Ultrasonic radar (U-Sodar), including a set of hardware based on a three-transmitter four-receiver Multiple Input Multiple Output (MIMO) architecture and a set of signal processing algorithms. …”
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Outage probability of multiuser cognitive MIMO system by WU Ying-xiao1, ZHU Qi2

“…The outage performance was considered in the multiple-antenna flat Raleigh fading broadcast downlink channel and the closed-form expression of the outage probability of primary and secondary users was derived. The number of transmitter and receiver antenna was carefully analyzed for impacts the outage performance of the primary and secondary user. …”
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New cognitive radio channel model and the analysis of its capacity by XIE Xian-zhong, YANG Zhi-hua, ZHENG Yi

“…New cognitive radio channel model is the combination of the interweave channel and the interference channel.By introducing the switch concept,the spectrum hole sensing was combined the channel model.So a new cognitive radio two-user channel model with partial knowledge of the primary messages at the cognitive transmitter was proposed.First,the channel between the primary user and the second user was modeled as a compression channel and introduced the compression rate.Then,the channel capacity was analyzed and calculated.Finally,numerical results illustrate the validity of the new channel model and the advantage of its capacity.…”
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Diversity and multiplexing based on GMD algorithm by HE Zhong-tang1, AI Ju-mei2, HU Luo-quan1, ZHANG Li-jun1

“…The GMD-VBLAST algorithm to treat with the MIMO systems was analyzed,where the channel information at both transmitter and receiver were known.It decomposed a MIMO channel into multiple identical parallel subchannels and provided more convenient for coding/decoding schemes,which was different from conventional SVD method.The diversity and multiplexing tradeoff curve was achieved in the case of high SNR and compared with the optimal tradeoff curve and others VBLAST schemes’.The results showed that this scheme is suboptimal to the optimal but superior to the other VBLAST schemes’.…”
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Blind SNR estimation based on cyclostationarity by HUA Meng, ZHU Jin-kang, GONG Ming

“…This estimator had no restrict on modulation mode and no need for transmitter to transmit known data. Simulation results show this estimator yields better performance than other classic blind SNR estimators, such as M2M4 and SVR estimators in a large SNR domain. …”
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Joint transmit and receive antenna selection in mimo systems for maximize channel capacity by LAN Peng1, LIU Ju1, XU Hong-ji1, SUN Feng-gang1

“…Based on the analysis of the channel capacity,the equation about the increase of the channel capacity was derived when one more pair of transmit and receive antennas were added.By analyzing this equation,a joint transmit and receive antennas selection algorithm with low complexity were proposed when there were the same number of RF chains at both of the transmitter and receiver side.The simulation results illustrate that the new algorithm outperforms the other existing algorithms with lower complexity and it approaches the optimal algorithm most.…”
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Novel cooperative power control game algorithm for cognitive radio systems by CHENG Shi-lun1, YANG Zhen1, ZHANG Hui2

“…In order to fair optimally allocate the limited cognitive radio resource,a cognitive radio system was developed based on STBC OFDM-CDMA network systems and a novel Nash bargaining solution named NBS of cooperative power control was adopted in this system,the transmitted power was dynamically adapted based on channel conditions,maxi-mal network throughput and power limits.Simulation results show that the novel algorithm can regulate their transmitter powers,fair optimally allocate radio resource.At the same power consumption,the network throughput is thereby im-proved obviously.…”
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Survey of wireless channel measurement and characterization for high-speed railway scenarios by Liu LIU, Cheng TAO, Hou-jin CHEN, Tao ZHOU, Rong-chen SUN, Jia-hui QIU

“…The conducted measurement campaigns,domestic and overseas,were presented.Meanwhile,proposals and standard channel models from the international standardization organization were reviewed.The large-scale and small-scale fading characteristics of High-Speed Railway wireless channels were adequately compared,and it is found that the channel parameters depend on the propagation environment and the distance between the transmitter and receiver.Moreover,due to difficulties encountered in realistic channel measurements,theoretical channel characterization methods were analyzed.Finally,open research issues were presented.…”
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Research on beam management of non-coaxial OAM communication system by Feng ZHENG, Gaoming DUAN, Liangang CHI

“…As a new modulated degree of freedom, orbital angular momentum (OAM) could greatly improve the spectrum utilization of wireless communication.However, the uniform circular array (UCA)-based OAM communication system requires the transceiver array to be static and perfectly aligned, which makes it difficult for OAM to be practically applied.A beam management method based on OAM was proposed, which determined the best beam matching by scanning the beam of receiver and receiver, and the matched beam was used to communicate.Simulation results show that the proposed scheme could effectively reduce the system performance degradation caused by non-coaxial of receiver and transmitter arrays.…”
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Optimal transmissions for space-time coded OFDM UWB systems

“…The emerging ultra-wideband （UWB） system offers a great potential for the design of high-speed short-range communications.Compared with great progress at physical layer,the corresponding medium access control （MAC） layer designs are naturally placed on the schedules.We focus on the optimal power load scheme,which is an integral part of the MAC layer protocol design,for UWB space-time coded （STC） orthogonal frequency-division multiplexing （OFDM） transmissions.Assumed the transmitter has perfect or partial channel stage information （CSI）.Based on the optimization criteria of maximizing capacity,three kinds of power load schemes were presented with different tradeoff among performance,complexity and feedback bandwidth overhead.The proposed schemes are verified and compared under the channel prototype proposed by IEEE 802.15.3a Task Group.…”
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From the Search for a Molecular Code of Memory to the Role of Neurotransmitters: A Historical Perspective by Georges Chapouthier

“…Such attempts were relatively unsuccessful, which led to a second period (starting in 1978) with the research emphasizing, in a less ambitious way, the role of the molecular correlates of mnesic processes, in particular in the main transmitter systems of the brain.…”
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Design of knowledge enhanced semantic communication receiver by Rongpeng LI, Bingyan WANG, Honggang ZHANG, Zhifeng ZHAO

“…To address the problem that existing semantic communication do not make sufficient use of prior knowledge and have limited decoding capability at the receiver side, a knowledge enhanced semantic communication framework was proposed, in which the receiver could more actively utilize the prior knowledge in the knowledge base for semantic reasoning and decoding, without extra modifications to the neural network structure of the transmitter.Specifically, a transformer-based knowledge extractor was designed to find relevant factual triples for the received noisy signal.Extensive simulation results on the WebNLG dataset demonstrate that the proposed framework has significantly improved performance on the basis of knowledge graph enhanced decoding.…”
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Network Topology Reconstruction Based on Power Line Communication by Xu Ma, Fang Yang, Jian Song, Jianqi Li, Weilin Liu

“…The PLC channel model was considered and the topology of PLC network was reconstructed by taking advantage of the signal of the transmitter and receiver. The algorithm of matrix pencil and dynamic network reconstruction algorithm was performed. …”
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Design and Construction of a Voice Control System for Appliances Using Android Via Bluetooth. by Twizerimana Daniel

“…Bluetooth is interfaced to the arduino board using the transmitter and receiver pins for communication. The electrical loads are controlled by the relay which is connected to the arduino board, so the respective devices and appliances are turned on or off depending on the voice command. …”
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Sistem Kontrol Perangkat Inframerah Menggunakan Speech Recognition dengan Spectrogram dan Convolutional Neural Network Berbasis Mikrokontroler by Irfan Muzakky Nurrizqy, Barlian Henryranu Prasetio, Rekyan Regasari Mardi Putri

“…The optimal distance required between the user and microphone is 30 cm and the optimal distance required between the infrared transmitter and the controlled device is 30 cm. …”
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Sistem Monitoring Frekuensi Denyut Nadi pada Pelari Menggunakan Metode Photoplethysmographic by Asih Setiarini, Mahatma Widya Laksana, Basuki Winarno

“…The sensor consists of transmitter and receiver infrared through to skin tissue to detect the blood volume. …”
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Blind recognition of STBC based on higher-order cumulants by Li-min ZHANG, Qing LING, Wen-jun YAN

“…Aiming at the problems for blind recognition of space-time block code(STBC)in MIMO communication sys-tems,a method was exploited based on higher-order cumulants of received signals.Firstly,the model of received signals was given and the fourth-order cumulants of the received signals in multiple input single output(MISO)systems was ob-tained.Secondly,using the characteristics of coding matrix,it was proved that the fourth-order cumulants in different de-lay vectors presented non-null value that depended on the STBC sat the transmitter side.Finally,a classifier for the STBC was presented based on the Euclid distance between the experimental values of fourth-order cumulants and the theoretical ones.Simulations show that the method performs well even for low signal to noise ratio.…”
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High-Rate Redundant Space-Time Coding by Jawad Manssour, Afif Osseiran, Slimane Ben Slimane

“…A major merit of the decoding algorithm is that it allows to adaptively tradeoff between diversity and multiplexing gains based on the estimated channel parameters at the receiver without requiring any channel state information at the transmitter. System level simulation results give insight into the advantages of the proposed scheme when compared to its Alamouti and MIMO multiplexing based on single value decomposition counterparts.…”
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Research on satellite-ground adaptive modulation and coding techniques based on intellgent prediclion of channel state by JI Shuo, SUN Yaohua, PENG Mugen

“…Furthermore, an intelligent selection mechanism for modulation and coding schemes was introduced based on the prediction model, wherein the transmitter selects the modulation and coding scheme suited for the current channel conditions based on the channel prediction results. …”
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