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In the last few years, wireless communication technologies have undergone several advancements. In this context, Unmanned Aerial Vehicles (UAVs) play a vital role. It is a big challenge to get accurate data with minimum collision in UAVs. The features of Direct Sequence Spread Spectrum (DSSS) like multiple access and antijamming are useful to get accurate data with minimum collision. DSSS can transmit and control data. DSSS is a common technique for data transmission. As the number of users increases, DSSS may not be sufficient to transmit and control data. To overcome this problem, we propose a novel hybrid technique for data transmission. The paper introduces a hybrid approach with the combination of Time Division Multiple Access (TDMA) with DSSS. TDMA can divide the frame into equal time slots, so it is easy to access more number of users with minimum data collision. In DSSS, the user data is multiplied with Barker code for spreading and TDMA allocates time slots to each user to allow the same frequency channel by dividing the signal into time slots. The paper uses 13-bit Barker code with the spread spectrum, i.e.,13 users can allow at a time and Bit Error Rate (BER) is evaluated. The work can be carried out in MATLAB. [ABSTRACT FROM AUTHOR]

To efficiently handle multimedia data transmissions across 5G mobile wireless networks, Quality-of-Service (QoS) techniques have been developed with statistical delay bounds. Recent developments in error-control technology have made Finite Blocklength Coding (FBC) an effective tool in the non-asymptotic regime assuring exacting statistical QoS standards in terms of both latency and reliability for the Ultra Reliable Low-Latency Communications (URLLC) in 5G networks, unlike Shannon's theorem which involves infinite blocklength. In order to address the aforementioned issues, under both asymptotic and non-asymptotic conditions, the paper proposes heterogeneous analytical-based resource allocation methods for 5G mobile networks predicated on Non-Orthogonal Multiple Access (NOMA) with massive Multiple-Input Multiple-Output (MIMO). It develops the NOMA with massive MIMO scheme-based 5G wireless mobile network model to maximize the performance and achieve interference management, high capacity, adaptive and intelligent optimization for the outlined strategies. It also executes simulation tests to demonstrate how well the suggested schemes perform in terms of ensuring heterogeneous statistical delay/error rate constrained QoS when compared to other current methods. [ABSTRACT FROM AUTHOR]

Nowadays, wireless communication is the preferred mode to transmit information and hence it is required that the data is transmitted with minimum number of errors. For transmission of large amount of data at once, a technique named MIMO is used, but in this technique also, the data needs to be encoded in such a way that the probability of error at the receiver side is reduced. The paper focuses on MIMO technique and considers two systems, 4 * 2 and 4 * 3, for transmission and reception of the data. For encoding the data, Space Time Block Codes (STBC) scheme is used and a comparison is done to find out the better system for data transmission with minimum amount of error. [ABSTRACT FROM AUTHOR]

The paper deals with the current scenario and future prospects of the 5G system along with the challenges it faces. The fourth-generation wireless communication systems are already implemented or going to be implemented in many countries. However, there are still some challenges facing 4G, such as spectrum problem, power consumption and poor coverages. Mobile phones are moving faster to provide the user the same or even better experience than the personal computer. It is expected that from mobile communication point of view, we should have a higher data transmission rate compared to wire line network. Also, the expectation is for seamless connectivity and access. The wireless designers have started research on fifth-generation wireless systems that are expected to be deployed after 2020. In this paper, various promising technologies for future wireless communication system such as huge multiple input and multiple output system, power efficient communications and cognitive radio network are discussed. Existing and future challenges are also discussed. [ABSTRACT FROM AUTHOR]

Code Division Multiple Access (CDMA) systems are interference limited systems and the level of interference directly relates to the capacity of the system. Shadowing plays a vital role in interference. CDMA uses Soft Handoff (SHO) technique for a smother transmission while moving from one cell to another. The paper investigates and evaluates power allocation during SHO on two fronts, one with shadowing component and the other without considering the impact of shadowing. A two-way SHO case has been considered for the analysis purpose. When shadowing is not considered, more power is needed to support SHO in order to keep the same Eb/I0 target. When shadowing is considered, the attenuation of the radio channel is dynamically changing. To meet the same Eb/I0 target, the power that needs to be allocated should be changing as well. For the mobile users near the cell boundary with SHO, less average power is needed to meet the same Eb/I0 target. In the downlink direction, the inter-cell interference is closely related to the location of mobile user. Shadowing increases average interference level. SHO effects in the downlink interference are quite complicated, depending on the location of Mobile Station (MS), the radio attenuation and power division strategy. SHO decreases the probability of over-power and QoS deterioration for the users at the cell boundary. It also decreases the total average power needed by the MS at the boundary of the cell. [ABSTRACT FROM AUTHOR]

In the last few years, there has been a drastic increase in the use of mobile devices. Along with the increase of these devices, the data generated is massive. These data are also shared between them. Many protocols are used for data sharing. System parameters assume a critical part in the productive working of it. Additionally, these parameters are firmly identified with each other. Opportunistic sharing means that these devices have an opportunity to share data. When the data is shared, all the nodes are active during transmission. This causes network congestion or traffic and influences the execution of the system. This paper includes two methods for selecting only one node for transmission, instead of all nodes being active. After implementing these methods, network parameters are improved. Detection of network is done depending on the number of the nodes in network. The first method is to detect if the network is sparse or dense network. The second method is to count the hop limit and lifetime of sharing data between two mobile nodes. Parcel delivery proportion, throughput, vitality and overhead are the parameters considered in this paper. [ABSTRACT FROM AUTHOR]

Light Fidelity (Li-Fi) is one of the future technologies in wireless communication sector. Li-Fi refers to 5G Visible Light Communication (VLC) systems using light-emitting diodes as a medium to high-speed communication in a similar manner as Wireless-Fidelity (Wi-Fi). These days when Internet has become a major attraction, people are in need of Wi-Fi hotspots. Li-Fi or New Life of data communication is a better alternative to Wi-Fi in wireless communication. This paper proposes a survey on Li-Fi technology. Li-Fi has more capacity in terms of bandwidth in visible region, therefore it does not poke its nose in other communication which uses radio frequency range without taking its frequency bands. Li-Fi has thousand times greater speed than Wi-Fi and provides security as the visible light is unable to penetrate through the walls, which proposes a new era of wireless communication. The concept of Li-Fi is data communication on fast flickering of light which is not detected by human eye but it is focused on photo detector which converts the on-off state into binary digital data. [ABSTRACT FROM AUTHOR]

Energy consumption issues are the fastest growing research area in wireless communication network. Cooperative relay communication technique is a solution for minimizing the energy of overall wireless communication network. A number of techniques have been proposed to minimize the energy consumption of the network. This paper gives an overview of the different cooperative relay communication networks. [ABSTRACT FROM AUTHOR]

The paper explorers Free Space Optical (FSO) communication with its flashes and corns. FSO technology is useful where the physical connection is impractical due to high cost or other considerations, and in most cases, optical data transmission is done via optical fibers, because it allows transmission over relatively large distances without alignment issues and relatively very less disturbing influences of atmosphere. But optical data transmission using fiber has also many limitations. Some limitations are removed by FSO technology, such as it provides high data rates, low power consumption, low installation cost and easily upgradable. FSO performance parameters, i.e., internal and external parameters, and some modulation techniques used in FSO technology are also discussed. [ABSTRACT FROM AUTHOR]

Free Space Optical (FSO) communication offers a promising technology for future high speed networks by providing huge transmission bandwidth, light weight, small size, low cost, low power and license free deployment as compared to the present radio frequency systems. Since in FSO communication, the atmosphere is used as a channel, atmospheric turbulence effects cause fading and misalignment of signal at the receiver and deteriorate the Bit Error Rate (BER) performance. This paper is focused on analyzing the FSO communication system performance in Delhi by modeling FSO communication system using basic Wavelength Division Multiplexing (WDM) technique with optimizing several system parameters in different turbulent environments such as fog and rain. Performance is analyzed in terms of Signal-to-Noise Ratio (SNR), received optical power and BER for different meteorological effects at data rate of 2.5 Gbps, 5 Gbps and 15 Gbps. From the results, it is concluded that the quality of received signal can be improved with priority-based optimization of parameters that increases link range up to 115 km in clear weather condition at 15 Gbps. [ABSTRACT FROM AUTHOR]

This paper focuses on the analysis of a large N x N high-performance Fast Packet switch suitable for mixed ATM and IP traffic. It is a Banyan network using cyclic interconnection among switching elements of the same stage. We employ deflection-routing algorithm in each switching element. The proposed routing is as simple as that of the generic banyan network, and all the Switching Elements (SEs) have a uniform structure. To design the proposed network and to develop its self-routing property, we observe that all the SEs of the banyan network are arranged in a regular pattern topologically. We, thus, present a growable switch architecture based on the topological properties of banyan networks. As a result, we show that the new network has a far better performance than the other networks. [ABSTRACT FROM AUTHOR]

Nowadays, information security is a challenge, especially when the data is transmitted or shared on public clouds. Researchers have proposed various techniques which fail to provide data integrity, security, authentication and data sensitivity. The most common techniques used to protect data during transmission on public clouds are cryptography, steganography and compression. The current study suggests an entirely new approach that completely makes secret data invisible behind a carrier object and cannot be detected with image performance parameters like PSNR, MSE, entropy, etc. The proposed technique has better outcome than any other existing techniques as a security mechanism on a public cloud. The primary focus of the suggested technique is to minimize integrity loss of public storage data due to unrestricted access rights of users. To improve reusability of carrier, even after data is concealed, is really a challenging task and can be achieved through the proposed approach. [ABSTRACT FROM AUTHOR]

Vehicular Ad-Hoc Network (VANET) is a new technology in the Internet of Things (IoT). It is broadly used in intelligent transport system. VANET provides V2V communication and V2R communication in real time. Intelligent Transport System (ITS) is used for road safety, information service and traffic efficiency. Greedy Perimeter Stateless Routing (GPSR) protocol and Greedy Perimeter Coordinate Routing (GPCR) protocol are proposed. However, transmission of emergency data packets can be risky since Packet Delivery Ratio (PDR) is not guaranteed as GPCR link connectivity is not considered; hence, they are not suitable for emergency data transmission. The algorithms Destination Sequenced Distance Vector (DSDV) and Ad-hoc On-demand Distance Vector (AODV) are proposed to resolve problems like end-to-end delay, average PDR, and routing overhead. It is observed that AODV algorithm improves throughput and PDR, and reduces end-to-end delay in transmission of emergency data packets. [ABSTRACT FROM AUTHOR]