Data Transmission Techniques Research Articles

A Survey on Dual Authentication and Key Management Techniques for Secure Data Transmission in Vehicular Ad Hoc Network

A Survey on Dual Authentication and Key Management Techniques for Secure Data Transmission in Vehicular Ad Hoc Network

Impact of connecting to the n th nearest node in dedicated device‐to‐device communications

Device-to-device (D2D) communication is a proximity-based data transmission technique where users communicate directly with each other, when bypassing evolved node base station. The most common assumption in the literature is that every D2D user connects to its nearest node. However, in many situations connection to the first nearest node for a D2D user is not possible due to the channel conditions or user's decline in joining in a D2D connection. The impact of connecting to the nth nearest node in a dedicated D2D enabled network is investigated. The coverage probability and average data rate of a typical D2D link in the network, where users connect to their nth nearest node are studied. The results show that considering the first nearest node is an ideal assumption and investigating the connection to the other farther nodes is of great importance.

A New Technique for File Sharing Mechanism Ad hoc Networks

Network coding is a data transmission technique which allows intermediate nodes in a network to re-code data in transit. In contrast to traditional network communication where a node repeats incoming data to its outgoing channel without modifying the payload, a node implementing network coding not only repeats but also alters data. Network coding has been demonstrated to increase network throughput compared to the traditional forwarding transmission. It has potentially broad applications in many areas, including traditional computer networks, wireless ad-hoc networks, and peer to peer systems. This paper process a new technique for file sharing in P2P.

A Smart Sensor Data Transmission Technique for Logistics and Intelligent Transportation Systems

When it comes to Internet of Things systems that include both a logistics system and an intelligent transportation system, a smart sensor is one of the key elements to collect useful information whenever and wherever necessary. This study proposes the Smart Sensor Node Group Management Medium Access Control Scheme designed to group smart sensor devices and collect data from them efficiently. The proposed scheme performs grouping of portable sensor devices connected to a system depending on the distance from the sink node and transmits data by setting different buffer thresholds to each group. This method reduces energy consumption of sensor devices located near the sink node and enhances the IoT system’s general energy efficiency. When a sensor device is moved and, thus, becomes unable to transmit data, it is allocated to a new group so that it can continue transmitting data to the sink node.

Secret Key Establishment via RSS Trajectory Matching Between Wearable Devices

Recently, people have witnessed a remarkable growth in the number of smart wearable devices. Accompanied with the development of a contactless data transmission technique, the lack of effective secret key establishment between lightweight wearable devices which support contactless data transmission technique becomes a security bottleneck. In this paper, we propose a novel wireless key establishment method by moving or shaking the wearable wireless devices. Instead of received signal strength (RSS) itself, we denote the RSS trajectories of two moving wireless devices as the materials of secret key. Moreover, inspired by channel reciprocity in a channel feature-based key establishment technique, we propose the concept of reciprocity of RSS trajectory that guarantees that even when the RSSs of two devices are the same, the identical RSS trajectories of two devices can successfully generate the secret key. In addition, to effectively utilize the RSS trajectories, we design a novel quantization scheme by considering the entropy and efficiency of key generation. Furthermore, we analyze the security of this key establishment procedure in an eavesdropped and monitored environment. We also perform an evaluation of 64-, 128-, 192-, and 256-b key generation in indoor/outdoor environment, and the results indicate that the times are 0.22/0.33, 0.61/0.74, 0.95/1.02, and 1.28/1.46 s, respectively. In addition, the ranges of efficiency and entropy are 0.654-0.795 and 0.968-0.993.

Wireless Digital Communication Technologies for Drilling: Communication in the Bits\/s Regime

Drilling is the riskiest activity in the oil-field exploration and development stage. Real-time measurements are needed to monitor drilling conditions to keep it in the safe operating envelope, guide the drilling system into the most productive zones, and provide information for further stages in the completion of the well. In this article, we describe digital communication systems for drilling, including data transmission and data compression. We begin by describing data transmission techniques used for two systems: mud-pulse telemetry (MPT) and electromagnetic (EM) telemetry. The former conveys data through fluid pressure inside the drilling system, while the latter does so through EM waves that propagate through the formation. These two systems are used in nearly all modern oil-field drilling operations. As the data rates of the two systems are limited to the bits/s regime, data compression is very important, in particular, for the real-time transmission of images. We review recent advances in digital communication-inspired by specific channel and geological models-that have enabled the drilling of record-breaking wells in terms of measured depth and operations in very challenging environments.

On the Performance of Multiuser MIMO Systems Relying on Full-Duplex CSI Acquisition

In this paper, we propose a combined full duplex (FD)- and half duplex (HD)-based transmission and channel acquisition model for an open-loop multiuser multiple-input multiple-output (MIMO) systems. Assuming residual self-interference at the base station (BS), the idea is to utilize the FD mode during the uplink (UL) training phase in order to achieve simultaneous downlink (DL) data transmission and UL CSI acquisition. More specifically, the BS begins serving a user when its CSI becomes available, while at the same time, it also receives UL pilots from the next scheduled user. We investigate both zero-forcing (ZF) and maximum ratio transmission MIMO beamforming techniques for the DL data transmission in the FD mode. The BS switches to the HD mode once it receives the CSI of all users and it employs ZF beamforming for the DL data transmission until the end of the transmission frame. Furthermore, we derive closed-form approximations for the lower bounded ergodic achievable rate relying on the proposed model. Our numerical results show that the proposed FD–HD transmission and channel acquisition approach outperforms its conventional HD counterpart and achieves higher data rates.

Social Network chatting apps network traffic optimization

Objectives: This paper proposes a method to improve the energy efficiency delivery of instant message group chat messages. A user interaction with instant messenger using in smart phone causes high power state due to undisciplined network transmission between network interface (3G or Wi-Fi) and networking operator. Methods/Statistical Analysis: We investigated messaging network traffic pattern in social network chatting apps. In our experimental findings, instant messaging group chat messages (multi-user chatting between friends, colleagues family etc.) delivered by chat server is not energy efficient by We Chat. In our dataset, we found problem in pending group chat messages and not cached play songs in instant messaging app. An energy efficient friendly network traffic is to fetch contains like sound, text, images, video running on smart phone operating system possibly in low power and acquire operating system go back to sleep as soon as possible. In our case user does not participate in group chat. Instant messaging chatting apps like We Chat, QQ messenger. Social network chatting apps are replacing use of regular Short Message Service (SMS) service by mobile carriers, because of free to use them. In recent many researchers proposed bundled, batched and aggregate a data transmission technique to overcome undisciplined data transmission power wastage. In instant messaging app a simple greeting messages cannot have bundled, because user cannot to errant to delay messages. Findings: We had two case studies traffic pattern offline user scenario and online user scenario case. To achieve this goal, we achieved firstly, to reduce smart phone network interface active time by intimate user by light weight push message about group chat pending messages notification in 3G environment. Secondly, instant messaging apps received songs keep in pre-cached to reduce data packets requests in 3G. Application/Improvement: In our propose model, we delayed group chat traffic pattern and play songs in 3G connectivity. In addition, its play songs and receive group chat messages in Wi-Fi connectivity which cause lower energy battery drain in smart phone. Keywords: Energy Efficient, Network Interface 3G or Wi-Fi, Network Traffic, Social Network Apps

Secure Video Compression and Integration Technique for Data Transmission

Secure Video Compression and Integration Technique for Data Transmission

Enhanced rearrangement technique for secure data transmission: case study credit card process

Encryption of data is very important in order to keep the data secure and make secure transactions and transmission of data. Such as online shopping. whenever we give our card details there is possibility of data being hacked or intruded. So to secure that we need to encrypt the data and decryption strategy should be known only to that particular bank. Therefore to achieve this objective RSA algorithm can be used. Where only intended sender and receiver can know about the encryption and decryption of data. To make the RSA technique more secure in this paper we propose the technique we call it Modified RSA. for which a transposition module is designed which uses Row Transposition method to encrypt the data. Before giving the card details to RSA the input will be given to this transposition module which will scrambles the data and rearranges it. Output of transposition will be then provided to the modified RSA which produces the cipher text to send over the network. Use of RSA and the transposition module will provide the dual security to whole system.

Interference mitigation in uplink STBC MC-CDMA system based on PIC receiver

Multi Carrier Code Division Multiple Access (MC-CDMA) is attractive technique for high speed data transmission in multipath fading channel. MC-CDMA system cannot handle the sudden time variations of the channel which cause the subcarriers to lose their orthogonality. The loss of orthogonality between the subcarriers of a user or unwanted correlation between the spreading codes of different user can lead to increase in Multiple Access Interference (MAI). Space Time Block Code (STBC) based MC-CDMA system is chosen to achieve full diversity and transmission rate without the knowledge of Channel State Information (CSI) at the transmitter. Thus, in the paper STBC is introduced at the transmitter to improve the quality of the receiver. Space Time Block Code-Parallel Interference Cancellation (STBC-PIC) receiver has been proposed for MC-CDMA system. In the proposed STBC-PIC receiver, at each interference cancellation stage, weighted signal of the other user is subtracted from signal of the desired user, thereby reducing the MAI and improving the BER performance. From the simulation results, it is observed that the proposed receiver outperforms STBC-Orthogonal Complete Complementary Code (STBC-OCCC), STBC-Minimum Mean Square Error (STBC-MMSE) and STBC-Zero Forcing (STBC-ZF) receivers for MAI reduction.

Dual Authentication and Key Management Techniques for Secure Data Transmission in Vehicular Ad Hoc Network

Dual Authentication and Key Management Techniques for Secure Data Transmission in Vehicular Ad Hoc Network

IP Over Radio: A Performance Evaluation for Internet of Things System with Various Data Transmission Technique

IP Over Radio: A Performance Evaluation for Internet of Things System with Various Data Transmission Technique

Better performance of OFDM using three special triangular constellations over AWGN and fading channels

SummaryOrthogonal frequency division multiplexing (OFDM) has been adopted as a major data transmission technique by many wireless communication standards. In this research, 3 new triangular constellations schemes, which are named as TRI1, TRI2, and TRI3, are introduced to replace for the well‐known rectangular quadrature amplitude modulation (QAM) constellation in OFDM modulation. In this study, it has been shown that these new schemes have 3 major advantages with respect to the QAM. The first advantage is their lower bit error rate, which results from the better usage of the constellation space with longer minimum distances. The 2 other advantages are a lower peak to average ratio and higher noise immunity. Both mathematical analysis and simulation results demonstrate that by applying high fading channels with additive white Gaussian noise and intersymbol interference impairment simultaneously, the proposed constellations exhibit a superior performance in criteria compared to the commonly used rectangular 16QAM and 64QAM constellations. As a result, they are good choice for high speed and real‐time multicarrier applications such as digital video broadcasting terrestrial at no extra cost.

A Novel MEMS Gyro North Finder Design Based on the Rotation Modulation Technique.

Gyro north finders have been widely used in maneuvering weapon orientation, oil drilling and other areas. This paper proposes a novel Micro-Electro-Mechanical System (MEMS) gyroscope north finder based on the rotation modulation (RM) technique. Two rotation modulation modes (static and dynamic modulation) are applied. Compared to the traditional gyro north finders, only one single MEMS gyroscope and one MEMS accelerometer are needed, reducing the total cost since high-precision gyroscopes and accelerometers are the most expensive components in gyro north finders. To reduce the volume and enhance the reliability, wireless power and wireless data transmission technique are introduced into the rotation modulation system for the first time. To enhance the system robustness, the robust least square method (RLSM) and robust Kalman filter (RKF) are applied in the static and dynamic north finding methods, respectively. Experimental characterization resulted in a static accuracy of 0.66° and a dynamic repeatability accuracy of 1°, respectively, confirming the excellent potential of the novel north finding system. The proposed single gyro and single accelerometer north finding scheme is universal, and can be an important reference to both scientific research and industrial applications.

Improved Data Aggregation for Cluster Based Underwater Wireless Sensor Networks

While performing underwater monitoring tasks, energy of the sensor nodes in Underwater Wireless Sensor Networks (UWSNs) vanishes continuously all over the network. The performance of Under Water (UW) sensor nodes mainly depends on their battery which is difficult to replace and therefore, energy saving becomes the main objective for increasing the lifespan of such network. The combination of clustering and data aggregation may be used to save energy. To further reduce power consumption during data aggregation at the Cluster Head, efficient scheduling techniques for data transmission are required by the cluster members. In this paper, an Improved Data Aggregation technique for Cluster Based UWSN is proposed where an efficient sleep-wake up algorithm is used for aggregating the sensed data and TDMA based transmission schedule is used to avoid intra and inter cluster collisions. Improvement in well-known existing protocols is achieved by the combination of data aggregation and data scheduling along with data fusion to minimize the energy consumption. The performance of the proposed scheme is evaluated by comparing with existing protocols and results have shown better performance of the proposed scheme than the existing approaches in terms of packet drop, end-to-end delay, and energy consumption. The proposed technique also reduces the number of transmissions and efficiently utilizes the UW sensor nodes.

A novel wavelength reused bidirectional RoF-WDM-PON architecture to mitigate reflection and Rayleigh backscattered noise in multi-Gb/s m-QAM OFDM SSB upstream and downstream transmission over a single fiber

A novel m-QAM Orthogonal Frequency Division Multiplexing (OFDM) Single Sideband (SSB) architecture is proposed for centralized light source (CLS) bidirectional Radio over Fiber (RoF) – Wavelength Division Multiplexing (WDM) – Passive Optical Network (PON). In bidirectional transmission with carrier reuse over the single fiber, the Rayleigh Backscattering (RB) noise and reflection (RE) interferences from optical components can seriously deteriorate the transmission performance of the fiber optic systems. These interferometric noises can be mitigated by utilizing the optical modulation schemes at the Optical Line Terminal (OLT) and Optical Network Unit (ONU) such that the spectral overlap between the optical data spectrum and the RB and RE noise is minimum. A mathematical model is developed for the proposed architecture to accurately measure the performance of the transmission system and also to analyze the effect of interferometric noise caused by the RB and RE. The model takes into the account the different modulation schemes employed at the OLT and the ONU using a Mach Zehnder Modulator (MZM), the optical launch power and the bit-rates of the downstream and upstream signals, the gain of the amplifiers at the OLT and the ONU, the RB-RE noise, chromatic dispersion of the single mode fiber and optical filter responses. In addition, the model analyzes all the components of the RB-RE noise such as carrier RB, signal RB, carrier RE and signal RE, thus providing the complete representation of all the physical phenomena involved. An optical m-QAM OFDM SSB signal acts as a test signal to validate the model which provides excellent agreement with simulation results. The SSB modulation technique using the MZM at the OLT and the ONU differs in the data transmission technique that takes place through the first-order higher and the lower optical sideband respectively. This spectral gap between the downstream and upstream signals reduces the effect of Rayleigh backscattering and discrete reflections.

Using Different Techniques in Data Transferring by Optisystem Program

Nowadays, signal communication is considered as a vital element of our modern daily life. This is due to the need for transmitting large amount of different data types such as text, voice, images, videos, etc. The increase in the volume of data communications requires large data transmission capacity. The data can be transmitted using copper wire, but with low data transmission capacity. To resolve this issue of transmitting large data with a higher signal to noise ratio and larger communication distant, lightwave technology was adopted. The work focuses on the design and the modeling of single and dual channels optical communication systems that use lightwaves as a carrier for signal transmission. This is to study characteristics and conduct performance evaluation and analysis of the designed communication subsystems through the use of different data transmission and reception techniques. Optisystem simulation software is used as a powerful simulation tool in the development of optical system modules, which include the transmitter that converts signal to light, fiber-optic channel, and the receiver that converts light back to the original signal.

Compressive Sensing Based Image Compression and Transmission for Noisy Channels

This paper presents the design of an optimized Compressive Sensing image compression technique for data transmission over noisy mobile wireless channel. The proposed technique is more robust to channel noise. It uses individual measurement driven coding scheme, which facilitates simpler encoder design. The shift of computational burden from encoder to decoder is more suitable for mobile devices applications where computational power and battery life are limited. This paper also presents a novel quantizer which allows the encoder to dynamically adapt to the channel conditions and provides optimum performance.

Optimization FSO Performance Under Strong Turbulence Effect By Enhanced New Carrier Data Transmission Technique

This paper focus on mitigating the atmospheric turbulence effect in free space optical communication using a dual diffuser modulation (DDM) technique. The most deteriorate the FSOC is scintillation where it affected the wave front cause to fluctuating signal and ultimately receiver can turn into saturate or loss signal. DD approach enhances the detecting bit ‘1’ and bit ‘0’ and improves the power received to combat with turbulence effect. The performance focus on Signal-to-Noise (SNR) and Bit Error Rate (BER) by using the Kolmogorov’s scintillation theory. The numerical result shows that the DD approach improves the range where estimated approximately 40% improvement under weak turbulence and 80% under strong turbulence.