Catur Budi Waluyo, Yenni Astuti

Submitted : 2017-08-23, Published : .


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.


HAPs, LTE,capacity, coverage


Ayadi,J.,Hutter, A.A,Farserotu,J. “On the multiple Input Multiple Output capacity of Ricean Channels". 0-7803-7442-8/02. 2002. IEEE

Choo,Y.s.,Yang,J. K. W. Y.,Kang, C. G., MIMO-OFDMwireless communications with matlab. John Wiley & Sons(Asia) L td .2010

Grace,D. and Mohorcic,M., “Broadband Commnucation via High Altitude Platform ". John wiley & sons Ltd, 2011.UK

Irma Zakia, Suhartono Tjondronegoro, Iskandar, Adit Kurniawan. “Sum Rate Capacity of Multiuser MISO Designed for HAPS High Speed Train A p p l i c a t io n 2011

International Conference on Electrical Engineering and Informatics 17-19 July 2011, Bandung, Indonesia. IEEE. 2011

Iskandar, and Shimamoto,S. , The channel characterization and performance evalution of mobile Communication Employing tratospheric Platform, IEEE, 2005

Khalifi,A.H.and Bouallegue,R, 2011. Performance Analysis LS and LMMSE Channel Estimation Techniques for LTE Downlink System. International Journal o f Wireless & Mobile Networks(IJWMN). Vol 3. No 5. Oktober 2011

Mohammed,A.and Yang,Z., “Broadband Communications and Applications from High Altitude Platforms, ” International Journal o f Recent Trends in Engineering, Vol 1, No. 3, May 2009.

Thorton,J., Grace,D., Spillard,C., T.konefal and T.C. Tozer, “Broadband communication from High Altitude Platforms: the european Helinet programme” Electronic & communication Engineering jornal june 2001

Waluyo,C.B and Iskandar, Performance analysis with LMMSE for MIMO LTE on the High Altitude Platform Station, Pages: 308 - 313, DOI: 10.1109/ICEEI.2015.7352516, IEEE.2015

Waluyo,C.B.. Analisis MIMO untuk peningkatan kapasitas sistem seluler 4G LTE pada sistem komunikasi High Altitude Platform Station. hal: 111 - 119. Jurnal Angkasa edisi November.STTA. 2016

Zarrinkoub,H., “Understanding LTE with matlab from Mathematical modeling to simulation and protyping”. John wiley & sons Ltd. 2014.

Article Metrics

Abstract view: 647 times
Download     : 477   times

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.


  • There are currently no refbacks.