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This paper presents signal processing of position plan indicator (PPI) display for weather radar. The radar uses technique of frequency-modulated continuous-wave (FMC) to monitor the precipitation events in atmosphere and climate investigation. The use of FMCW technique is chosen in order to reduce the power at transmitter. For time efficiency, real-time domain processing conducted using Matlab® is...
In this article, a printed patch antenna array for 37 GHz point-to-point wireless links is analyzed. The antenna array consists of five elements with rectangular patch and uniform distribution. It has a compact size of 30.25 × 9.5 mm with operating frequency at 37 GHz that covers future 5G applications. The designed antenna using a substrate with a relative dielectric permittivity of 2.2 and a thickness...
In this paper, we present a multiband ultra wideband (UWB) system design to realize the interference suppression and improve the bit transmission rate. With reasonable division of the UWB bandwidth, the multiband UWB scheme can improve the spectrum utilization and also the bit transmission rate through the utilization of the multiple frequency bands to transmit the information bit simultaneously....
HTTP adaptive streaming (HAS) technology has been widely implemented in entertainment industries. It allows users to smoothly access representations of content when the network work conditions frequently fluctuate. This mechanism not only improves the perceived quality of user but also benefits the network resource utilization. However, the frequent adaption of bit rate may cause the instability of...
Surveillance application has become one of promising application areas of wireless sensor networks (WSNs) which aims to monitor any anomaly at real time. Network lifetime is a critical concern in the design of such a network. However, due to non uniform crossings and irregular area geography, sensors deployed along the monitored area may run out of energy. A failure of these sensors may cause a hole...
RINA (Recursive InterNetwork Architecture) is a promising network architecture based on the concept of distributed Inter Process Communications (IPC). In RINA there is a single type of programmable layer (the DIF “Distributed IPC Facility”), that repeats as many times as needed by the network designer. Each layer is composed of only two programmable protocols: one performs data transfer and data transfer...
The purpose of this research is to develop a decision support system that can provide an alternative targets and choose one of them becomes the target of the own source revenue in the Regional Government Budget. Alternative targets are based on model calculations the average unit rates are calculated from the average revenue realization and acceptance of the average percentage growth of each source...
A utilization of split ring resonator (SRR) for developing compact narrowband microstrip bandpass filter (BPF) is presented. The proposed BPF is intended to work at center frequency of 880MHz implementable for intermediate frequency (IF) radar application. The BPF is designed on a 1.9mm thick Roger RT/Duroid® 6010 dielectric substrate with the substrate dimension of 30mm χ 25mm. Some parametric studies...
We propose a novel M-branch diversity receiver for PMD mitigation in an intensity-modulated direct-detection (IM-DD) optical transmission system. The receiver diversity is realized in the optical domain by means of a few additional fixed optics, whereas the dispersion penalty is mitigated in the electrical domain after optical-to-electrical conversion by incorporating a normalized-threshold generalized...
Message forwarding is an integral part of the decentralized content sharing process as the content delivery success highly depends on it. Existing literature employs spatio-temporal regularity of human movement pattern and pre-existing social relationship to take message forwarding decisions. However, such approaches are ineffectual in environments where those information are unavailable such as a...
In this paper we study the problem of increasing the decoding success probability of random linear fountain code over GF (2) for small packet lengths used in delay-intolerant applications such as multimedia streaming. Such code over GF (2) are attractive as they have lower decoding complexity than codes over larger field size, but suffer from high transmission redundancy. In our proposed coding scheme...
The emergence of Internet-of-Thing (IoT) has driven tremendous growth of number of connected devices such that in the near future everything is connected to the networks forming super-dense networks. To cope with this challenge, this paper investigates networks with multiple relays serving massive number of devices (users), termed as multiway multirelay (MWMR) networks. Coded random access is adopted...
We propose the use of Small Cell Forum application program interface mapped over Radio over Ethernet frames to realize a transport interface for mobile fronthaul where the function of the base stations is split between MAC and PHY layers for 5G mobile with a centralized radio access network configuration. We confirmed that this approach successfully reduced the bandwidth required for the fronthaul...
Indonesia requires microsatellites for surveillance & remote sensing applications including disaster management such as forest fire, volcanic activity, flood, or even for communication purpose. The first generation Indonesia microsatellite, called LAPAN-A1 (LAPAN-TUBSAT), has been launched on 10th January 2007 as the starting point to further develop microsatellite technology in Indonesia. The...
Internet of Things (IoT) has emerged these last years as one of the most attractive subjects in both the research community and the public. As a sub-domain, Wireless Sensor Networks (WSNs) have been attracting a lot of interest. However, the resource-constraint characteristics of physical objects in those networks presumably limit the design and development of security protocols. Whilst, sensor nodes...
Named Data Networking(NDN) is a new networking architecture that centers around content distribution. However, service provision is equally important for the deployment of this new architecture. Today, Internet services are typically provisioned by a number of discrete servers or server farms to improve service scalability, reliability and performance. Although TCP/IP network provides a rich set of...
Performance comparison of various Packet Scheduling (PS) algorithms such as Proportional Fair (PF), Maximum Largest Weighted Delay First (MLWDF) and Exponential/Proportional Fair (EXP/PF) has been studied in HetNets environment. The performance indicators such as throughput, Packet Loss Ratio (PLR), delay and fairness are considered to judge the performance of the scheduling algorithms. Various strategies...
The TV white space (TVWS) or equivalently the spatially available unused TV spectrum has drawn much attention recently due to its availability for opportunistic access by unlicensed users in fulfilling the spectrum demands. In this paper, we have evaluated the capacity of secondary (unlicensed) user network meeting the constraint on the aggregated secondary interference power at the TV receiver. Particular...
In this paper, the investigation of image quality improvement for ground penetrating radar (GPR) acquisition is proposed using interpolation method. A model of M16 rifle is used as the object of investigation and simulated using an open source gprMax software. The simulation to scan the object is performed in 2 scenarios; (i) the step of GPR antenna is set to 200mm in x-direction and 30mm in x-direction;...
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