PRABHAT MAN SAINJU
LTE PERFORMANCE ANALYSIS ON 800 AND 1800 MHz
BANDS
Master of Science Thesis
Topic approved by:
Faculty Council of
Computing and Electrical Engineering on
7
th
May 2012
Examiners:
Professor, Dr. Tech. Mikko Valkama
Dr. Tech. Jarno Niemelä
I
ABSTRACT
TAMPERE UNIVERSITY OF TECHNOLOGY
Master of Science Electrical Engineering
SAINJU, PRABHAT MAN: LTE PERFORMANCE ANALYSIS ON 800 AND 1800 MHz
BANDS
Master of Science Thesis, 82 pages. 2 Appendix pages
September 2012
Major: Radio Frequency Electronics
Examiner(s): Professor, Dr. Tech. Mikko Valkama
Dr. Tech. Jarno Niemelä
Keywords: LTE 800, Inter-frequency comparison, LTE coverage
Long Term Evolution (LTE) is a high speed wireless technology based on OFDM. Un-
like its predecessors, its bandwidth can be scaled from 1.6 MHz to 20 MHz. Maximum
theoretical throughputs from the LTE network in downlink can be estimated to range
over 300 Mbps. The practical values are however limited by the channel overheads,
path loss and cell loading. Its ability to deliver high throughput depends upon its radio
access technology OFDM and the high bandwidth usage as well.
The other important feature of LTE is its usage in multiple bands of spectrum. The pri-
mary focus in this thesis is on 800 MHz band and its comparison with 1800 MHz band
and UMTS coverage. Coverage, capacity and throughput scenario are the essential di-
mensions studied in this thesis. A test network was set up for LTE measurement and the
primary measurement parameters such as RSRP, RSRQ, SINR and throughput were
observed for different measurement cases. The measurement files were analysed from
different perspectives to conclude upon the coverage aspect of the network.
The basic LTE radio parameters RSRP, RSRQ and SINR tend to degrade as the UE
moves towards the cell edge in a pattern similar to the nature of free space loss model.
In a way, these parameters are interrelated and eventually prove decisive in the down-
link throughput. The throughput follows the trend of other radio parameters and de-
crease as the UE moves towards the cell edge. The measured values have been com-
pared to the theoretical results defined by link budget and Shannon’s limit. The compar-
ison shows that measured values are confined within the theoretical constraints. Theo-
retical constraints along with the minimum requirements set by the operator have been
used to measure the performance of the sites. Similar analysis was also performed with
the LTE 1800 network and UMTS 900 network and the result was compared to the cov-
erage scenario of LTE 800. Higher slope of attenuation was observed with LTE 1800
compared to LTE 800 and thus limiting the coverage area. Comparison of radio parame-
ters RSRP, RSRQ and SINR confirm the coverage difference and its consequence on
downlink throughput. Performance of UMTS 900 however was not much different to
LTE 800 coverage wise.
The measurements have been carried out on LTE test network at Kuusamo, Finland and
the commercial UMTS network set up by TeliaSonera for the comparison of LTE 800
with LTE 1800 and UMTS 900.