scholarly journals Quaternion Model of Higher-Order Rotating Polarization Wave Modulation for High Data Rate M2M LPWAN Communication

Sensors ◽  
2021 ◽  
Vol 21 (2) ◽  
pp. 383
Author(s):  
Zaid Ahmad ◽  
Shaiful Jahari Hashim ◽  
Fakhrul Zaman Rokhani ◽  
Syed Abul Rahman Al-Haddad ◽  
Aduwati Sali ◽  
...  
Keyword(s):  
High Reliability ◽  
Substantial Improvement ◽  
Higher Order ◽  
Data Rate ◽  
Sensor Nodes ◽  
High Data Rate ◽  
Error Performance ◽  
Polarization Wave ◽  
High Data ◽  
Ber Performance

With growing interest in Industry 4.0, machine-to-machine communication (M2M) will become the key enabler for low-power wide area networks (LPWANs) in connecting machines and sensor nodes distributed across a distance in the industrial environment. The choice of modulation and diversity techniques, and the selection of spectrum (licensed/unlicensed) will impact and influence the requirements of wireless M2M systems. Link reliability is one of the most important requirements for LPWAN deployment in industrial scenarios. Rotating Polarization Wave (RPW) system has been recently proposed as an LPWAN solution for reliable M2M communication in high clutter environment and it deploys BPSK modulation with polarization diversity (PD). This paper proposes a new multi-level Rotating Polarization Phase-Shift Keying (RP-MPSK) modulation to provide high data rate and energy efficiency. A novel quaternion model for RPW system (Q-RPW) is also proposed to reduce the complexity in modeling, simulation, and implementation. Results using Q-RPW model show that RP-MPSK modulation offers a high diversity gain over BPSK with second-order diversity. Bit error rate (BER) performance of RP-MPSK modulation compared against other LPWAN modulation like MPSK, FSK and QAM has shown high reliability and substantial improvement in SNR. To overcome the degradation in error performance caused by the proposed higher-order modulation, sampling rates are recommended based on BER performance. BER performance of RP-MPSK under multipath and interference conditions is also investigated.

High Speed Portable Wireless Data Acquisition System for High Data Rate Applications

2009 ◽  
Author(s):  
Emre I. Cosar ◽  
Maurizio Bocca ◽  
Lasse M. Eriksson
Keyword(s):  
Data Acquisition ◽  
Health Monitoring ◽  
High Speed ◽  
Original Data ◽  
Data Rate ◽  
Sensor Nodes ◽  
High Data Rate ◽  
Wireless Sensor ◽  
Sink Node ◽  
High Data

Communication between a sink node and a PC can constitute a bottleneck for high data rate applications of wireless sensor networks (WSNs) including, but not limited to, structural health monitoring, condition monitoring, wireless surveillance and patient health monitoring. In this paper, we evaluate four different data acquisition alternatives for data-intensive WSN applications. We will concentrate especially on optimizing UART (universal asynchronous receiver transmitter) communication in conjunction with WSN applications. Furthermore, we propose a new method for sink node to PC communication, which is based on using a USB-connected data acquisition (DAQ) board that samples the node external I/O. This method can provide an efficient solution to transfer data from the sink node to PC at a reasonable cost. Wireless sink node converts the data received from the network into analog signal levels, which are sampled through the DAQ board connected to a PC, and the original data is reconstructed offline. Tests on a wooden bridge built to scale with six wireless sensor nodes and a sink node show that with the proposed method it is possible to collect the data from the network and transfer them onto the PC significantly faster than with the 115.2 kbps UART communication regularly used in WSN applications.

scholarly journals Design and analysis of an OFDM-based orthogonal multilevel code-shifted differential chaos shift keying

2020 ◽  
Vol 20 (3) ◽  
pp. 1369
Author(s):  
Fadhil Sahib Hasan ◽  
Hayder Fadhil Fahad
Keyword(s):  
Fading Channels ◽  
Chaotic Signal ◽  
Data Rate ◽  
High Data Rate ◽  
High Data ◽  
Signal Sets ◽  
Shift Keying ◽  
Analytic Expressions ◽  
Chaos Shift Keying ◽  
Ber Performance

In this paper, a new non-coherent <span class="il">chaos</span>-<span class="il">based</span> communication that combined <span class="il">Orthogonal</span> <span class="il">Multilevel</span> <span class="il">Code</span>-<span class="il">Shifted</span> <span class="il">Differential</span> <span class="il">Chaos</span> <span class="il">Shift</span> <span class="il">Keying</span> with <span class="il">orthogonal</span> frequency division multiplexing named (<span class="il">OFDM</span>-OMCS-DCSK) modulation system. New <span class="il">orthogonal</span> chaotic signal sets are generated by hybrid Gram-Schmidt algorithm <span class="il">and</span> Walsh <span class="il">code</span> function <span class="il">and</span> used it to carry high data rate in the same time slot. The Bandwidth efficiency <span class="il">of</span> the <span class="il">OFDM</span>-OMCS-DCSK system is comparing with conventional system. Also, the BER analytic expressions are derived under (AWGN) <span class="il">and</span> multipath Rayleigh fading channels <span class="il">and</span> comparing with the simulation results. Furthermore, the BER performance is compared with <span class="il">OFDM</span>-DCSK to found that the proposed system has the best BER performance with high data rate feature.

Interference measurements for high data rate TDMA transmission through ACTS

1998 ◽  
Author(s):  
Robert Kerczewski ◽  
Duc Ngo ◽  
Diepchi Tran ◽  
Quang Tran ◽  
Brian Kachmar
Keyword(s):  
Data Rate ◽  
High Data Rate ◽  
High Data ◽  
Interference Measurements

scholarly journals On Bandwidth Efficient Modulation for High-Data-Rate Wireless LAN Systems

2002 ◽  
Vol 2002 (8) ◽  
Author(s):  
John D. Terry ◽  
Juha Heiskala ◽  
Victor Stolpman ◽  
Majid Fozunbal
Keyword(s):  
Wireless Lan ◽  
Data Rate ◽  
High Data Rate ◽  
High Data

Ground based high data rate DVB-S2 demodulator for high data rate AISR transport

2010 ◽  
Author(s):  
Chayil Timmerman ◽  
Miles Benson ◽  
John Delisle ◽  
Justin Delva ◽  
Robert Elliott ◽  
...  
Keyword(s):  
Data Rate ◽  
High Data Rate ◽  
High Data
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