Jurnal Ilmiah Spektrum最新文献_第6页

DESAIN SIMULASI UNJUK KERJA BARKER CODE PADA KANAL FREQUENCY SELECTIVE FADING

Jurnal Ilmiah Spektrum Pub Date : 2022-09-29 DOI: 10.24843/spektrum.2022.v09.i03.p2

I. P. Dio Gangga Saskara, N. Pramaita, I. Diafari Djuni H

{"title":"DESAIN SIMULASI UNJUK KERJA BARKER CODE PADA KANAL FREQUENCY SELECTIVE FADING","authors":"I. P. Dio Gangga Saskara, N. Pramaita, I. Diafari Djuni H","doi":"10.24843/spektrum.2022.v09.i03.p2","DOIUrl":"https://doi.org/10.24843/spektrum.2022.v09.i03.p2","url":null,"abstract":"The signal that arrives at the receiving end is the sum of the various transmissions passed by the signal (multipath) which is influenced by the channel so that there is signal interference. Many innovations have been made so that the received signal can have high security, one of which is spread spectrum with a dual access scheme to increase the ability of many spectrum users in a limited number without disturbing one another. This simulation was tested with the aim of spreading the spectrum with different code lengths for the same bit length of information, and observed from the change in the BER value obtained from the MATLAB 2018a simulation results to find out how the barker code performance on the frequency selective fading channel on a single user. The analysis of this research is obtained from the simulation results in the form of a graph that shows the BER value compared to Eb/No. The BER value shown by the barker code performance on the flat fading channel, which is compared based on the existing flat theory, shows the graph trend and the BER value generated from the simulation is close to the theoretical flat BER value. The performance of the barker code on the frequency selective fading channel is carried out by varying the number of multipath components 7, 5, and 3. The simulation results show that multipath 3 is the best with the smallest bit error value compared to multipath 7 and 5. Barker code performance is strongly influenced by the number of multipath components, the more the number of multipath components, the more performance of the barker code bit error, and vice versa.","PeriodicalId":30870,"journal":{"name":"Jurnal Ilmiah Spektrum","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85257813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

UNJUK KERJA SISTEM OFDM DENGAN MENGGUNAKAN ALGORITMA VFFT PADA KANAL AWGN 使用AWGN频道的VFFT算法启动OFDM系统工作

Jurnal Ilmiah Spektrum Pub Date : 2022-09-29 DOI: 10.24843/spektrum.2022.v09.i03.p13

N. Trisnawati, N. Wirastuti, I. Hartawan

引用次数: 0

ANALISIS DAYA OUTPUT GENERATOR BERDASARKAN VARIASI DEBIT AIR PADA PROTOTYPE PLTMH DENGAN TURBIN VORTEX

Jurnal Ilmiah Spektrum Pub Date : 2022-09-29 DOI: 10.24843/spektrum.2022.v09.i03.p5

I. G. N. Agastya Citranath, L. Jasa, I. Suartika

引用次数: 0

PENGARUH VARIASI JUMLAH SUDU TERHADAP EFISIENSI PADA PROTOTYPE PEMBANGKIT LISTRIK TENAGA MIKROHIDRO (PLTMH) DENGAN MENGGUNAKAN TURBIN VORTEX SUDU数量的变化对涡流发电原型的效率的影响

Jurnal Ilmiah Spektrum Pub Date : 2022-09-29 DOI: 10.24843/spektrum.2022.v09.i03.p4

Kadek Rekha Agustha, L. Jasa, I. Suartika

{"title":"PENGARUH VARIASI JUMLAH SUDU TERHADAP EFISIENSI PADA PROTOTYPE PEMBANGKIT LISTRIK TENAGA MIKROHIDRO (PLTMH) DENGAN MENGGUNAKAN TURBIN VORTEX","authors":"Kadek Rekha Agustha, L. Jasa, I. Suartika","doi":"10.24843/spektrum.2022.v09.i03.p4","DOIUrl":"https://doi.org/10.24843/spektrum.2022.v09.i03.p4","url":null,"abstract":"Micro-hydro power plants using vortex turbines have the advantage that their operation can be carried out at low levels of falling water or head. One of the problems that exist in vortex turbine is there is no equation to determine the maximum output generated by the number of blades used. Based on the problems described, a prototype of micro-hydro power plants using vortex was made to test the variations in the number of blades to get the best efficiency. The prototype test in this study used a turbine with various number of blades of 3, 5, and 9 blades. Based on the research conducted, the increase of micro-hydro power plant prototype performance equals to number of blades used. When the system was set with a discharge of 4.5 liters per second paired with a turbine consisted of 9 blades which produced 303.8 rpm of turbine rotation before coupled by the generator and 230.5 rpm after coupled by the generator, the generator rotation was 653.5 rpm, the generator output voltage was 8.29 Volts, generator current output was 0.046, generator power output was 0.387 Watt, torque was 0.0393 Nm, and the highest efficiency was 2.92%","PeriodicalId":30870,"journal":{"name":"Jurnal Ilmiah Spektrum","volume":"224 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75891360","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

PERBANDINGAN ALGORITMA SUPERVISED MACHINE LEARNING UNTUK SISTEM PENGHINDARAN HALANGAN PADA ROBOT ASSISTANT UDAYANA 02 (RATNA02)

Jurnal Ilmiah Spektrum Pub Date : 2022-09-29 DOI: 10.24843/spektrum.2022.v09.i03.p12

Yohanes Andre Setiawan, Y. Divayana, W. Widiadha

{"title":"PERBANDINGAN ALGORITMA SUPERVISED MACHINE LEARNING UNTUK SISTEM PENGHINDARAN HALANGAN PADA ROBOT ASSISTANT UDAYANA 02 (RATNA02)","authors":"Yohanes Andre Setiawan, Y. Divayana, W. Widiadha","doi":"10.24843/spektrum.2022.v09.i03.p12","DOIUrl":"https://doi.org/10.24843/spektrum.2022.v09.i03.p12","url":null,"abstract":"Supervised Machine Learning can make robots smarter by making decisions automatically. This study compares various Supervised Machine Learning algorithms to determine the best algorithm that can be used on Robot Assistant Udayana 02 (RATNA02). The algorithms to be compared are Artificial Neural Network (ANN), Support Vector Machine (SVM), Decision Tree (DT), Random Forest (RF), Naïve Bayesian (NB), and K-Nearest Neighbor (KNN). Models were created using the TensorFlow and SKLearn libraries. The model is trained using 100.000 data of left sensor, right sensor, front sensor, robot offset, and data label. Data preprocessing is done using MinMaxScalar and LabelEncoder. The comparisons that will be measured are accuracy, training duration, and file size of the model. DT and RF algorithms get 100% accuracy followed by ANN, KNN and SVM with 99.87%, 97.42% and 98.52% respectively, and NB with 87.34%. Fastest training duration was achieved by NB for 0.03 seconds, followed by DT for 0.08 seconds, while other algorithms took more than one second. The smallest file size is owned by NB with a size of 2kb and DT ranks second with 4kb, other algorithms have a file size of more than 25kb. Decision Tree Algorithm is the best because the duration of the model training is relatively fast, the file size is small, and the accuracy is high.","PeriodicalId":30870,"journal":{"name":"Jurnal Ilmiah Spektrum","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78792984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

ANALISIS PENGHEMATAN BIAYA LISTRIK DI KANTOR DINAS KETENAGAKERJAAN DAN ESDM PROVINSI BALI PASCA TERPASANG PLTS ATAP 40 KWP 在安装了40千克的屋顶PLTS后，巴厘岛劳动局和ESDM省的电力成本分析

Jurnal Ilmiah Spektrum Pub Date : 2022-07-21 DOI: 10.24843/spektrum.2022.v09.i02.p16

I. K. Adi Febriana Putra, I. A. Dwi Giriantari, I. W. Sukerayasa

引用次数: 0

STUDI POTENSI PEMBANGKIT LISTRIK TENAGA PIKO HIDRO DI ALIRAN SUNGAI IRIGASI SUBAK WERDI PUTRA SEDANA KABUPATEN BADUNG 研究水电水力水力发电厂的潜力，研究该地区SEDANA区的儿子WERDI灌溉渠

Jurnal Ilmiah Spektrum Pub Date : 2022-06-30 DOI: 10.24843/spektrum.2022.v09.i02.p17

Ida Bagus Gede Wira Negara, I. Janardana, I. A. Arta Wijaya

{"title":"STUDI POTENSI PEMBANGKIT LISTRIK TENAGA PIKO HIDRO DI ALIRAN SUNGAI IRIGASI SUBAK WERDI PUTRA SEDANA KABUPATEN BADUNG","authors":"Ida Bagus Gede Wira Negara, I. Janardana, I. A. Arta Wijaya","doi":"10.24843/spektrum.2022.v09.i02.p17","DOIUrl":"https://doi.org/10.24843/spektrum.2022.v09.i02.p17","url":null,"abstract":"In addition to solar and wind energy, the hydrological cycle can be used for energysources by utilizing waves or currents or water potential e nergy due to differences in water level.This water energy is energy that has not been utilized optimally. In general, the utilization of thisenergy source is carried out on a large scale and requires very large costs. According toobservations, the Dukuh Moncos Traditional Village has the potential for generating electricitybecause the river flows are quite stable and sustainable. In this study, a study was conductedon the potential of the Werdi Putra Sedana irrigation river flow around the Kelaci Templ e, DukuhMoncos Traditional Village, Sobangan Village, Mengwi District, Badung Regency to be utilizedas a pico hydro power plant with quantitative and descriptive methods. This study was carriedout by measuring the water flow rate then measuring the head or height difference then continuously measuring the hydraulic potential, from the measurement stage and obtaining theresults then calculating the potential power generated by the irrigation river so that the powergenerated was obtained. The flow of the Werdi Putra Sedana subak river in Banjar HamletMoncos, Sobangan Village, Mengwi District, Badung Regency has the potential to be used asan alternative energy source, namely a pico hydro power plant (PLTPH) with an average powerof 3.86 kW.","PeriodicalId":30870,"journal":{"name":"Jurnal Ilmiah Spektrum","volume":"128 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75743669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

AUDIT ENERGI DAN MONITORING BERBASIS IOT UNTUK PENINGKATAN EFISIENSI PENGGUNAAN LISTRIK DI ART CENTER DENPASAR 能源审计和监测是基于提高能源使用效率的艺术中心登巴萨

Jurnal Ilmiah Spektrum Pub Date : 2022-06-30 DOI: 10.24843/spektrum.2022.v09.i02.p10

Novian Bayu Putranto, Agus Dharma, Putu Ayu Rhamani Suryadhi

引用次数: 1

KAJIAN PENGGUNAANjALAT PENERANGANlJALAN TIPEILED DI JALAN BYfPASS MUNGGU TANAH LOT

Jurnal Ilmiah Spektrum Pub Date : 2022-06-30 DOI: 10.24843/spektrum.2022.v09.i02.p8

I. N. Tri Juliarta, A. A. G. Maharta Pemayun, Gd Dyana Arjana

{"title":"KAJIAN PENGGUNAANjALAT PENERANGANlJALAN TIPEILED DI JALAN BYfPASS MUNGGU TANAH LOT","authors":"I. N. Tri Juliarta, A. A. G. Maharta Pemayun, Gd Dyana Arjana","doi":"10.24843/spektrum.2022.v09.i02.p8","DOIUrl":"https://doi.org/10.24843/spektrum.2022.v09.i02.p8","url":null,"abstract":"The existence of public street lighting (APJ) as a means of supporting the road is very necessary to provide comfort, security, and safety for road users. Public street lighting that is not in accordance with the 2008 Indonesian National Standard (SNI) can cause road problems. SNI 2008 requires primary arterial roads to have an average illumination of 11-20 lux. The problem of lack of illumination occurs on the By Pass Munggu Tanah Lot road from the Seseh Beach traffic light intersection to the Singing beach road intersection, which has a length of 1.47 Km with a total of 21 street lighting points that produce an average illumination of 4,58 lux. The problem of harmonics in the electric power system is increasingly complex with the increasing use of non-linear equipment (eg LED lamps), where this equipment produces harmonics in voltage and current waves. In this study, harmonic calculations will be carried out on LED lamps and mercury lamps. The method used in the preparation of this research is a method of comparing the characteristics of mercury lamps and LED lamps, which is to compare from a technical and economic point of view. After that, match the provisions and conformity which in this case refers to SNI 2008.","PeriodicalId":30870,"journal":{"name":"Jurnal Ilmiah Spektrum","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87939387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

IMPLEMENTASI SISTEM PEMANTAUAN SUHU DAN KELEMBABAN UDARA BERBASIS IOT PADA PLANT FACTORY KEBUN PERCOBAAN FAKULTAS PERTANIAN UNIVERSITAS UDAYANA UDAYANA大学农业学院植物工厂试验采用了基于温度监测和空气湿度的系统

Jurnal Ilmiah Spektrum Pub Date : 2022-06-30 DOI: 10.24843/spektrum.2022.v09.i02.p2

I. N. Agus Junaedi, A. A. N. Amrita, I. N. Setiawan

引用次数: 2