Pengaruh Code Rate untuk Komunikasi RBS Femto Cell Frekuensi 47 GHz pada Tiang Lampu Jalan

2018

INFOTEL

Self Cite

This paper focused at communication system with multipath effects at building environment. The frequency that used for the communication system was 47 GHz. That frequency possibly used for higher bandwidth at communication system. The condition of communication propagation that used was downlink direction. Mobile station placed at track or street with buildings environment condition. This research analysis was based on transmitter power variation, bandwidth variation, and modulation threshold variation. That analysis produced signal to noise ratio value that was obtained from bandwidth variation and transmitter power variation. The transmitter power variation that used was consists of 0.01 Watt, 0.1 Watt, and 1 Watt. Threshold variations for communication modulation that used was consist of 16 QAM and 64 QAM. As the result such as bandwidth variation showed widened of bandwidth then more decreasing of signal to noise ration value, and more increasing of transmitter power then also more increase of signal to noise ratio value

“…(2) Equation ( 2), the parameter f can be expressed by frequency (GHz). The equation for 1 , 2 , 3 value can be seen (3).…”

Section: Methodsmentioning

confidence: 99%

Multipath Effects in Building Environment Toward Bandwidth Enhancement for Mobile Communication of 47 GHz Frequency

2018

INFOTEL

Self Cite

“…The usage that frequency can be influenced by atmospheric attenuation [14]. The equation for atmospheric attenuation can be seen at equation (1).…”

Section: System Designmentioning

confidence: 99%

“…The usage that millimeter wave can be influenced by atmospheric. Some research that used millimeter wave such as influence code rate at communication system of RBS femto cell using 47 GHz frequency [1], 38 GHz and 60 GHz frequency for wireless peer to peer communication where propagation can be occurred by multipath because obstacle by building [2], handoff mechanism using 60 GHz frequency at wireless systems [3], propagation mechanism where handoff condition at 5G mobile communication [4], loss diffraction analysis of NLOS condition used small cell backhaul at millimeter wave [5], propagation model was using communication millimeter wave at 5G wireless network [6], mobile station determination was using 47 GHz frequency [7], bandwidth influence that was caused by multipath around building for mobile communication with 47 GHz frequency [8], and RBS femto cell used 10 GHz frequency that was placed at above pole lamp [9].…”

Section: Introductionmentioning

confidence: 99%

Adaptive Modulation and Coding (AMC) around Building Environment for MS Communication at The Train

2018

emitter

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This paper focused at communication systems when train moved. The communication propagation was influenced by building environment. The communication condition that used uplink direction. Mobile station was placed inside the train where moved with 500 km/hour velocity. The analysis was used consists of Doppler effect, atmospheric, and building environment. The variation communication frequency was used consists of 2.6 GHz, 5 GHz, and 10 GHz. Diffraction mechanism caused building was used single knife edge method. The result was showed SNR value from the communication frequency variation, distance comparison between LOS and NLOS, alteration adaptive modulation and coding (AMC), and coverage area percentage. Modulation and Coding Scheme (MCS) was used for AMC consists of QPSK, 16 QAM, and 64 QAM. Decreases of SNR value can be occured when communication distance for NLOS condition farther then LOS condition. That distance became increases because was obstructed with high building. Changeable of AMC value was caused propagation condition. The coverage area percentage when communication frequency that was used consists of 2.6 GHz, 5 GHz, and 10 GHz was obtained 88.4%, 88.4%, and 81.7%.

“…Some research was related to communication systems from outdoor to indoor consist of propagation measurement at indoor used millimeter wave for wireless network 5G [1], and outdoor to indoor for path loss model at picocell and femtocell [2]. Some research was related with usage femtocell or picocell such as resource allocation schemes for cognitive LTE -A femtocells [3], femtocell enhanced multi-target spectrum allocation strategy in LTE-A Het Nets [4], code rate was influenced from communication systems at RBS femtocell at street pole lamp [5], and RBS femtocell propagation at street pole lamp used 10 GHz frequency [6].…”

Section: Introductionmentioning

confidence: 99%

The Communication System of Building from Outdoor to Indoor with AMC at 10 GHz

2020

INFOTEL

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The propagation model of communication systems was used propagation from outdoor to indoor of building. In the inside that building used partition with brick. That propagation condition used downlink condition from mobile station side. The communication frequency used 10 GHz. Some parameter variation was used in this research such as radio base station coverage, mobile station location of building, and code rate communication. The coverage variation of radio base station used femtocell and picocell. As the result described signal to noise ratio (SNR)at every node communication, adaptive modulation and coding (AMC) variation, and coverage area percentage in the building. The modulation and coding scheme (MCS) was used consist of QPSK, 16 QAM, and 64 QAM