Browse Items (62 total)
- Collection: Vol. 18, No. 1 2020
Sort by:
TELKOMNIKA Telecommunication, Computing, Electronics and Control
Optimization of image compression and ciphering based on EZW techniques
This paper presents the design and optimization of image compression and ciphering depend on optimized embedded zero tree of wavelet (EZW) techniques. Nowadays, the compression and ciphering of image have become particularly important in a protected…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
Power factor improvement on LED lamp driver using BIFRED converter
This paper presents the implementation of a power converter to improve power factor for LED lamp driver. The power converter which used in this system is the integration of boost and flyback converter (boost integrated flyback rectifier energy…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
Study on the effect of the substrate material type and thickness on the performance of the filtering antenna design
This article presents a new design of a four-pole microstrip filtering antenna. The filtering antenna consists of a bandpass filter, which has four resonators integrated to a monopole patch antenna. The filtering antenna is designed with a relatively…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
Integrating millimeter wave with hybrid precoding multiuser massive MIMO for 5G communication
Nowadays, there has been growing interest in the Massive MIMO as a result of improving throughput by leveraging spatial freedom and array gain. It is equipped with millimeter wave (mm Wave) bands to resolve the high path-loss. It is known from the…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
Improvement of voltage profile for large scale power system using soft computing approach
In modern power system operation, control, and planning, reactive power as part of power system component is very important in order to supply electrical load such as an electric motor. However, the reactive current that flows from the generator to…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
MIMO channels: optimizing throughput and reducing outage by increasing multiplexing gain
The two main aims of deploying multiple input multiple out (MIMO) are to achieve spatial diversity (improves channel reliability) and spatial
multiplexing (increase data throughput). Achieving both in a given system is impossible for now, and a…
multiplexing (increase data throughput). Achieving both in a given system is impossible for now, and a…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
Negative resistance amplifier circuit using GaAsFET modelled single MESFET
Negative resistance devices have attracted much attention in the wireless communication industry because of their low cost, better performance, high speed, and reduced power requirements. Although negative resistance circuits are non-linear circuits,…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
The performance of the vehicular communication-clustering process
For the new wireless systems and beyond, the intelligent transportation
system is considered as one of the main features that could be covered in the new research topics. Furthermore, both high-speed data transmission and data processing play a…
system is considered as one of the main features that could be covered in the new research topics. Furthermore, both high-speed data transmission and data processing play a…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
A low power wideband varactorless VCO using tunable active inductor
This paper presents a wideband varactorless voltage controlled oscillator (VCO) based on tunable active inductor in 90 nm CMOS process which yields a tuning range of 1.22 GHz to 3.7 GHz having a tuning scope of 100.5%. The designed VCO can be used…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
Influence of Ba[Mg2Al2N4]Eu2+ phosphor particle size on optical properties of the 6000K CPW-LEDs
In this paper, we consider the red phosphor Ba[Mg2Al2N4]Eu2+ as
the novel recommendation for improving the optical properties of the 6000K conformal packaging WLEDs (CPW-LEDs). For this purpose, we investigate the influence of the Ba[Mg2Al2N4]Eu2+…
the novel recommendation for improving the optical properties of the 6000K conformal packaging WLEDs (CPW-LEDs). For this purpose, we investigate the influence of the Ba[Mg2Al2N4]Eu2+…