Management of high-speed data services

1993 ◽  
Author(s):  
Michele Marini ◽  
Gian A. Mariani ◽  
Massimo Peruso
Keyword(s):  
High Speed ◽  
Data Services ◽  
High Speed Data

Broadband Communications for Aircraft in Oceanic and Other Remote Areas

2014 ◽  
Vol 1 (1) ◽  
pp. 51-59
Author(s):  
Stephen John Curran
Keyword(s):  
Video Streaming ◽  
High Speed ◽  
Data Communication ◽  
Data Service ◽  
Fibre Optic ◽  
Technical Challenge ◽  
Data Services ◽  
Remote Areas ◽  
Broadband Communications ◽  
High Speed Data

Data communication with aircraft presents unique technical challenges and these challenges are more pronounced when the aircraft are travelling over oceanic or other remote areas. When in populated areas, systems are available that can support high speed data services, one Gigabit per second (Gbps) and beyond via, terrestrial ground stations. However no such systems exist to provide airborne communications with high bandwidths among aircraft and between aircraft and the ground in more remote regions. Passengers will expect data service on the aircraft similar to what they typically experience on the ground. Multimedia activities, such as video streaming, are very bandwidth intensive and the provision of these services presents a serious technical challenge. On the ground, fibre optic cables are the method of choice for the provision of high speed data service, and in contrast, an airborne high speed data communications solution will need to be a wireless one.

High-speed data services using the Switched Digital Broadband Access System

2002 ◽  
Vol 2 (2) ◽  
pp. 188-202 ◽  
Author(s):  
Humberto J. La Roche ◽  
Stephen L. Myers ◽  
James P. Runyon ◽  
Gerald S. Soloway ◽  
David W. Spears
Keyword(s):  
High Speed ◽  
Broadband Access ◽  
Data Services ◽  
Access System ◽  
High Speed Data

scholarly journals A Comparative Study of 4G and VoLTE

2021 ◽  
Vol 9 (12) ◽  
pp. 2338-2341
Author(s):  
Atharva Khandekar
Keyword(s):  
High Speed ◽  
Cost Effective ◽  
Fourth Generation ◽  
Wireless System ◽  
Data Services ◽  
High Spectral Efficiency ◽  
High Speed Data ◽  
4G Wireless ◽  
4G Lte ◽  
Voice Calls

Abstract: This research paper provides an insight into the comparison between VoLTE and 4G. 4G Wireless Systems or Fourth generation wireless system is a packet switched wireless system with wide area coverage and high throughput. It is designed to be cost effective and to provide high spectral efficiency. VoLTE (voice over LTE) supports voice calls over 4G LTE network. With advanced VoLTE technology, the 4G network now provides high-speed data services, high-quality voice and video calls at affordable price. This paper first presents the challenges and benefits of both 4G and VoLTE and then compares them with consideration of different points. Keywords: GSM, LTE, VoLTE, 3G, HSPA, RAN

scholarly journals ANALISIS PENINGKATAN KAPASITAS SISTEM SELULER 4G LTE PADA SISTEM KOMUNIKASI HIGH ALTITUDE PLATFORM STATION

2017 ◽  
Vol 9 (1) ◽  
pp. 31
Author(s):  
Catur Budi Waluyo ◽  
Yenni Astuti
Keyword(s):  
High Altitude ◽  
Orthogonal Frequency Division Multiplexing ◽  
High Speed ◽  
Elevation Angle ◽  
Coverage Area ◽  
Data Services ◽  
High Altitude Platform ◽  
High Speed Data ◽  
4G Lte ◽  
High Altitude Platform Station

In the development o f wireless communications, to provide high-speed data services and wide bandwidth become a challenge. One technique to make it happen is by using Multicarrier Orthogonal Frequency Division Multiplexing (OFDM) modulation, where in OFDM, frequency selective fading channel effect will be perceived flat fading by each subcarrier. One communication system that supports OFDM technology is Long Term Evolution (LTE) with various types of bandwidth configurations provided. To improve LTE performance in capacity building, coverage area and data rate, it can use multi antenna technique both in receiver and sender, and integrate with High altitude platform station (HAPs) system. In this study the estimation used is Linear Minimum Mean Square (LMMSE). The relationship o f the elevation angle and the K factor is directly proportional, but the elevation angle value is inversely proportional to the diameter o f the HAPs coverage area. In addition, the more the number o f used antennas, the greater the capacity served. Based on the simulation results, the system with estimation can be used to expand the coverage area to 215.77 km which is from 0.032 km in QPSK modulation, speed 60 kmpj with 2x2 antennas.

scholarly journals Performance analysis of cellular CDMA high-speed data services

2006 ◽  
Vol 6 (4) ◽  
pp. 505-521 ◽  
Author(s):  
Kevin K. H. Chan ◽  
Weihua Zhuang ◽  
Young C. Yoon
Keyword(s):  
Performance Analysis ◽  
High Speed ◽  
Data Services ◽  
Cellular Cdma ◽  
High Speed Data

scholarly journals Analisis Kinerja Subscriber Station WiMAX di Urban Area Bandung

2013 ◽  
Vol 1 (2) ◽  
pp. 128
Author(s):  
DWI ARYANTA
Keyword(s):  
Packet Loss ◽  
High Speed ◽  
Communication Technologies ◽  
Base Station ◽  
Streaming Video ◽  
Data Services ◽  
Measurement Results ◽  
Qam Modulation ◽  
Subscriber Station ◽  
High Speed Data

ABSTRAKTeknologi komunikasi wireless semakin pesat mengalami perkembangan. WiMAX  merupakan suatu teknologi broadband yang didukung oleh standar IEEE 802.16d (802.16-2004) yang mampu memberikan layanan data berkecepatan tinggi hingga 75 Mbps dalam radius maksimal 40-50 km pada bandwidth 20 MHz. Alokasi frekuensi yang dipakai Indonesia untuk jaringan WiMAX  ini ialah 3,3 – 3,4 GHz. Penelitian ini dilakukan dengan melakukan proses pengukuran kinerja perangkat radio WiMAX  yaitu HiMax 331-SS. Proses pengukuran dilakukan antara CPE dan base station dengan antenna sektoral 1200 pada ketinggian 45 m. Lokasi pengukuran dilakukan di beberapa area kota Bandung yang telah ditentukan sebelumnya. Hasil pengukuran memperlihatkan nilai CINR tertinggi adalah 31 dB dengan modulasi 64 QAM – ¾ dan terendah nilai 10 dB dengan modulasi BPSK 1/2. Nilai RSSI tertinggi -54 dBm berada dan nilai RSSI terendah -89 dBm. Nilai throughput tertinggi untuk layanan streaming video sebesar  1000,8 kbps (downlink) dengan modulasi 64 QAM – ¾. Nilai delay terendah sebesar 56,247 ms pada kondisi LOS dan tertinggi sebesar 139,5 ms pada kondisi NLOS. Nilai terbesar packet loss sebesar 20% yaitu pada lokasi pengukuran terjauh 14,3 km.Kata Kunci: delay, packet loss, RSSI, CINR, throughput, CPE, WiMAX . ABSTRACTWireless communication technologies have evolved more rapidly. WiMAX  is a broadband technology that is supported by the IEEE standard 802.16-2004/d which is able to provide high speed data services of up to 75 Mbps within a radius of 40-50 km at a maximum bandwidth of 20 MHz. Indonesia frequency allocation used for the WiMAX  network is 3.3 to 3.4 GHz. This study was conducted with the performance measurement process that is Himax 331 WiMAX  radio - SS. Process measurement is made between the CPE and base station sector antennas at a height of 45 m in 1200. Locations measurements performed in several areas of Bandung predetermined. The measurement results show the highest CINR value is 31 dB with 64 QAM modulation - ¾ and the lowest value of 10 dB with BPSK modulation half. The highest RSSI value of -54 dBm being the lowest and -89 dBm RSSI value. The highest throughput for streaming video services by 1000.8 kbps ( downlink ) with 64 QAM modulation - ¾. The lowest value was 56.247 ms delay in LOS conditions and the highest was 139.5 ms in NLOS conditions. The greatest value by 20 % packet loss is the farthest measurement locations 14.3 km.Keywords: delay, packet loss, RSSI, CINR, throughput, CPE, WiMAX .

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