Technology Reports of Kansai University (ISSN: 04532198) is a monthly peer-reviewed and open-access international Journal. It was first built in 1959 and officially in 1975 till now by kansai university, japan. The journal covers all sort of engineering topic, mathematics and physics. Technology Reports of Kansai University (TRKU) was closed access journal until 2017. After that TRKU became open access journal. TRKU is a scopus indexed journal and directly run by faculty of engineering, kansai university.
Technology Reports of Kansai University (ISSN: 04532198) is a peer-reviewed journal. The journal covers all sort of engineering topic as well as mathematics and physics. the journal's scopes are
in the following fields but not limited to:
Within the current research, a puncturing procedure, which is novel as well as effective for attaining rate compatibility is presented. The low-density parity check codes (LDPC) of parallel concatenation gallager codes (PCGC) has been applied which includes the Quasi-Cyclic (QC) LDPC codes as one component, and two irregular components of the (LDPC) within the forward error correction coding (FEC). The puncturing procedure is effective as well as unique within this research. The LDPC component codes help create the variable code rates and the decoding challenges are reduced. Parallel concatenation has been used to apply the (QC-PCGC). They are component codes applied with the puncturing procedure to establish code rate and to decrease decoding challenges faced with several applications. The punctured coding system is tested using different channels. The simulation outcomes indicate that there is enhanced performance as compared to using the traditional PCGC or the LDPC long unique code which makes use of the same parameters, before and after puncturing. For the communication applications in the future, for instance, the 5G, the coding system structure that has been presented can be used. It is possible since there is a need for flexibility within forward error control coding and decoding and encoding should have lower complexity levels
The limited availability of resources to meet day-to-day increase in power demand due to the limitations of conventional energy resources have become the concern of every nation. An unpleasant case is that of Nigeria where the power supply depends mainly on hydro, leading to inefficient power generation and distribution. In this research, a charge controller with Maximum Power Point Tracker (MPPT) for photovoltaic system was implemented using a micro controller PIC 16F8768 and a prototype was constructed with an output voltage of 24 volts for optimum energy transfer throughout a day. Proteus 8.0 software was used for the task. The average of each term; voltage, current and power outputs were taken along their efficiencies for both dry season and rainy season. The MPPT is responsible for extracting the maximum possible output from the photovoltaic and feeding it into the load via the boost converter which step up the voltage to the required level. The performance characteristics of the charge controller with MPPT and without MPPT of the different output voltages were measured. Both output voltage and currentwith the MPPT and without MPPT were compared in terms of time (dry season and rainy season) and total power was evaluated. By using Proteus 8.0 software, the charge controller with MPPT was also simulated. Result shows that the efficiency of power without MPPT was 58.7% whereas with MPPT was60.33%. The charge controller with MPPT gives 5.632 W maximum power at 3:05 pm. The charge controller with MPPT has better performance even though this advantage is at the expense of additional components that make up the tracking unit of the charge controller system. Therefore, it can be recommended where the availability of grid is very low. Another advantage of using charge controller circuit with MPPT is that it supports portable operations where necessarily