Polypyrrole-Chitosan-CaFe2O4 Layer Sensor for Detection of Anionic and Cationic Dye Using Surface Plasmon Resonance by Amir Reza Sadrolhosseini, Pooria Moozarm Nia, Suhaidi Shafie, Kamyar Shameli, Mohd Adzir Mahdi

Get full text

Compressive Sensing Based Bayesian Sparse Channel Estimation for OFDM Communication Systems: High Performance and Low Complexity by Guan Gui, Li Xu, Lin Shan, Fumiyuki Adachi

Get full text

Nondata-aided error vector magnitude based adaptive modulation over rapidly time-varying channels by Fan YANG, Xiao-ping ZENG, Xin JIAN, Ji-hua ZHOU, Ding-liang RUAN, Yi-wen GAO

“…A novel nondata-aided error vector magnitude based adaptive modulation(NDA-EVM-AM) was proposed to solve the problem of lower spectral efficiency over rapidly time-varying wireless channels.Namely,NDA-EVM was considered as a metric to reflect the rapid change of time-varying channels.The unified model to calculate different modulation order of NDA-EVM was analytically derived,with which the relationship between NDA-EVM and bit error rate (BER) for each modulation order was presented.Thereafter,the mechanism to adaptively select the modulation orders of multilevel quadrature amplitude modulation (MQAM) signals was designed to guarantee the predefined BER.Taking the two rapidly time-varying channels proposed for high-speed railway scenarios as examples,numerical results are conducted to verify the effectiveness of the proposed algorithm.It shows that NDA-EVM estimation has the lest root mean square error than data-aided error vector magnitude (DA-EVM) estimation and signal to noise ratio estimation.The proposed algorithm has better accuracy in aspects of channel quality estimation and modulation orders adjustment,Compared with conventional data-aided error vector magnitude based-adaptive modulation (DA-EVM-AM),the accuracy improves by 7.9%,spectral efficiency improves by 0.53 bit·s⁻¹·Hz⁻¹,and compared with signal to noise ratio based-adaptive modulation (SNR-AM),the accuracy improves by 15.7%,spectral efficiency improves by 0.82 bit·s⁻¹·Hz⁻¹.…”
Get full text

Beam steering by two vertically faced metasurfaces using polarization free unit cells with three operating modes by Mohammadreza Jahangiri, Hossein Soleimani, Mohammad Soleimani

“…Channel modeling and signal to noise ratio of the designed metasurface in wireless network is represented in comparison with planar metasurface with the same cell number.…”
Get full text

Low-Bit Rate Feedback Strategies for Iterative IA-Precoded MIMO-OFDM-Based Systems by Sara Teodoro, Adão Silva, Rui Dinis, Atílio Gameiro

“…These strategies are applied to iterative MMSE-based IA techniques for the downlink of broadband wireless OFDM systems with limited feedback. A new robust iterative IA technique, where channel quantization errors are taken into account in IA design, is also proposed and evaluated. …”
Get full text

Design Study for a Quasisynchronous CDMA Sensor Data Collection System: An LEO Satellite Uplink Access Technique Based on GPS by Yijun Chen, Sheng Ding, Zhouchen Xie, Zhuangping Qi, Xuwen Liang

“…With the development of the LEO satellite communication technology, highly dependable wireless communication and sensor data collection using LEO satellites have been getting much attention for emergency, marine research, and forest fire disaster in the remote region. …”
Get full text

A New Fractal-Based Miniaturized Dual Band Patch Antenna for RF Energy Harvesting by Sika Shrestha, Seong Ro Lee, Dong-You Choi

“…The growth of wireless communications in recent years has made it necessary to develop compact, lightweight multiband antennas. …”
Get full text

All-Textile Compact Ultra-Wideband Microstrip Antenna with Full Ground Plane for WBAN Applications by Jinxin Du, Ruimeng Wang, Haiyan Li, Xue-Xia Yang, Christophe Roblin

“…A novel low-profile all-textile microstrip antenna for ultra-wideband (UWB) applications in wireless body area networks (WBANs) is presented. The antenna incorporates flexible materials such as felt and conductive fabrics which provide optimal wearing comfort and durability. …”
Get full text

Trust in Intrusion Detection Systems: An Investigation of Performance Analysis for Machine Learning and Deep Learning Models by Basim Mahbooba, Radhya Sahal, Wael Alosaimi, Martin Serrano

“…Two datasets are used to classify the IDS attack type, including wireless sensor network detection system (WSN-DS) and KDD Cup network intrusion dataset. …”
Get full text

Mutual Coupling Reduction Using Improved Dual-Layer Mushroom and E-Shaped Stub by Chunxia Cheng, Liyan Luo

“…The proposed antenna works in the open wireless communication band of 2.45 GHz. Using the proposed decoupling structure, a low mutual coupling level ranging from −27 to −40 dB is obtained when the center distance of the adjacent patches is 0.5λ0. …”
Get full text

Adaptive Media Streaming to Mobile Devices: Challenges, Enhancements, and Recommendations by Kristian Evensen, Tomas Kupka, Haakon Riiser, Pengpeng Ni, Ragnhild Eg, Carsten Griwodz, Pål Halvorsen

“…The final part of the paper studies efficient adaptation and delivery to mobile devices over wireless networks. We experimentally evaluate and improve adaptation strategies, multilink solutions, and bandwidth prediction techniques. …”
Get full text

Spatio-Temporally Adaptive Waiting Time for Cell Phone Sensor Networks by Deepthi Chander, Bhushan Jagyasi, U. B. Desai, S. N. Merchant

“…Existing approaches, such as ADAPT, use adaptive broadcast ranges at the Wireless Access Point (WAP) for query dissemination. …”
Get full text

Noise immunity of QAM-OFDM signal reception using soft-decision demodulation in the presence of narrowband interference by A. A. Paramonov, V. V. Chu

“…Along with the use in QAM-OFDM systems, the proposed simple method for demodulating QAM signals with soft decisions can be used in any wireless communication system using M-position QAM signals, where M is 2 to an even power.…”
Get full text

CKF-Based Visual Inertial Odometry for Long-Term Trajectory Operations by Trung Nguyen, George K. I. Mann, Andrew Vardy, Raymond G. Gosine

“…For comparison, this paper also develops a second solution to integrate VIO estimation with ranging measurements. The wireless communications between the vehicle and multiple beacons produce the ranging measurements and help to bound the accumulative errors. …”
Get full text

Adaptable electro-optic detection of THz radiation using a laser-written bull’s-eye antenna by Hesam Heydarian, Xitong Xie, Aswin Vishnuradhan, Wei Cui, Arnaud Weck, Angela Gamouras, Jean-Michel Ménard

“…This work paves the way for future developments of compact and sensitive THz detectors, notably for applications in wireless communications.…”
Get full text

From fitness trackers to medical devices: wearable technologies by Zhi Zhou

“…Applications based on Wireless Sensor Networks (WSN) for Internet of Things (IoTs) scenarios are rising. …”
Get full text

Adaptive Filtering for Channel Estimation in RIS-Assisted mmWave Systems by Shuying Shao, Tiejun Lv, Pingmu Huang

“…The advent of millimeter-wave (mmWave) massive multiple-input multiple-output (MIMO) systems, coupled with reconfigurable intelligent surfaces (RISs), presents a significant opportunity for advancing wireless communication technologies. This integration enhances data transmission rates and broadens coverage areas, but challenges in channel estimation (CE) remain due to the limitations of the signal processing capabilities of RIS. …”
Get full text

A Next-Generation Codebook Evolution Strategy for Massive Arrays Using Deep Neurals Networks by Minwoo Choi, Wonjin Sung

“…The time-varying codebook for each BS automatically reflects the characteristics of a given wireless environment to adapt to its channel and traffic conditions. …”
Get full text

High-Gain Textile Antenna Array System for Off-Body Communication by Maria Lucia Scarpello, Luigi Vallozzi, Hendrik Rogier, Dries Vande Ginste

“…A novel high-gain textile antenna array system, fully integrated into a rescue-worker’s vest and operating in the Industrial, Scientific, and Medical wireless band (2.4–2.4835 GHz), is presented. The system comprises an array consisting of four tip-truncated equilateral triangular microstrip patch antennas (ETMPAs), a power divider, line stretchers, and coaxial cables. …”
Get full text

Design of Patch antenna with Various shapes and various feeding techniques for IoT in the 2.45 GHz ISM Band by Harrou Meryama, Benkhadda Omaima, Saih Mohamed, Rhazi Youssef, Reha Abedelati

“…This comprehensive analysis provides valuable insights into the efficacy of different geometrical shapes and feeding mechanisms, empowering designers to select suitable configurations for specific IoT requirements, thus enhancing the development of efficient and reliable wireless communication solutions in the 2.45 GHz ISM band.…”
Get full text