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Paper Title (use style: paper title)

Analysis of the Impact of the Bandwith and Carrier of the LTE Mobile Networks on the Average Bitrate Loss of the Reference Cell and Average Bitrate Loss of the Active Users

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Authors Name/s per 2nd Affiliation

line 1- dept. name of organization

line 2-name of organization, acronyms acceptable

line 3-City, Country

line 4-e-mail address if desired

Abstract In this paper we will LTE OFDMA DL , LTE . SEAMCAT [1] . , ACS .

KeywordsLTE, OFDMA systems, average losses, synchronization, range.

1. Introduction (Heading 1)

LTE and LTE-Advanced represent the first solution for it and they will be the basis on the development of the telecommunication systems in near future. LTE and LTE-Advanced are 4G networks where IP transmission means standard speed of 100 Mbps from beginning to end (with end speeds up to 1 Gbps) [2]. To enable these performance LTE system introduced a new method of multistage approach than previous generations of mobile telecommunication systems. LTE uses OFDMA for downlink, and SC-FDMA for uplink [3]. OFDMA technique of multilevel approach is based on the sharing of the available bandwidth of the array of orthogonal candidates, which are further divided into several sub-channels (clusters). Candidates are assigned to different users, while orthogonality of the candidates provides protection from interference and increases spectral efficiency. Although OFDMA technique has a simple working principle, the practical application in reality is a very difficult task. Synchronization is the biggest challenge and plays a major role in the creation of the physical layer [4].

. ( ) ( ) [5]. , , . , . RF , . ACS (Adjacent Channel Selectivity) . , ACS . [6].

The paper of the thesis explains the main problems of synchronization in OFDMA systems. Some synchronization techniques applied in OFDMA systems are also described. In the paper of the thesis, the scenarios of interference for LTE / OFDMA DL within the software tool SEAMCAT are presented. The impact of the selectivity of the entrance filte in the moment of the loss of bandwidth filter is examined [7, 8].

2. LTE Mobile Techology

LTE\SAE , . , , : , IPv6 all-IP , . LTE , . , , all-IP [9, 10]. . LTE , . LTE , OFDMA , [11]. OFDMA , .

2.1 SEAMCAT

LTE OFDMA DL , LTE . SEAMCAT . , ACS .

2.2 Methology of SEAMCAT

SEAMCAT ( ) . . , . . . ( . ). . (utilisation) , . 5.1 . SEAMCAT : , () , , .

3. Results of the Simulations

, LTE OFDMA DL . 3GPP E-UTRA 10 MHz - . -UTRAN ACIR (Adjacent Channl Interference power Ratio).

3.1 .

SEAMCAT

433 m

3GPP -

BS15 dBi

UE0 dBi

900 MHz, 1800 MHz 2600 MHz

Log- shadowing10 dB

70 dB

1.4 MHz, 5 MHz, 10 MHz 20 MHz

Max subcarriers per BS ( )20

Number of subcarrier per mobile ( UE)1

RB150 kHz

handover3 dB

UE 4 dB

BS46 dBm

ACS20 dB, 30 dB 40 dB

3.1

CDMA OFDMA , 3.2.

SEAMCAT

BS35 dBm

BS20 dBi

UE0 dBi

900 MHz

--

- 107 dBm

3.2

3.1 1

(MHz) (MHz)Reference Cell - (%)OFDMA system ( -) - (%)

9001.415.9924.048

516.4243.998

1014.1614.066

2017.0254.187

18001.416.0994.115

516.9874.069

1015.2113.94

2015.434.03

26001.416.0184.042

517.0564.023

1014.6883.971

2014.4763.903

3.3

3.1

3.2

3.3, 3.1 3.2 3GPP ACS 20 dB. 900 MHz, 1.4 MHz 5 MHz, 10 MHz 20 MHz . 5 MHz 10 MHz . 1.4 MHz 5 MHz. 5 MHz 20 MHz. 1800 MHz, 1.4 MHz 5 MHz 10 MHz 20 MHz, . 5 MHz 10 MHz . 1.4 MHz 10 MHz, 10 MHz 20 MHz. 2600 MHz, 1.4 MHz 5 MHz, . 5 MHz 20 MHz . 1.4 MHz 20 MHz.

900 MHz 10 MHz, 2600 MHz 20 MHz. 2600 MHz 5 MHz, 900 MHz 20 MHz.

3.2 2


9001.417.1944.021

517.1614.11

1016.74.057

2018.5454.104

18001.416.2473.823

514.8444.126

1016.3774.235

2016.5453.935

26001.415.6514.001

517.6173.988

1018.4444.001

2014.9294.133

3.4

3.3

3.4

3.4, 3.3 3.4 3GPP ACS 30 dB. 900 MHz, 1.4 MHz 10 MHz, . 10 MHz 20 MHz . 1.4 MHz 5 MHz 10 MHz 20 MHz. 5 MHz 10 MHz . 1800 MHz, 1.4 MHz 5 MHz . 5 MHz 20 MHz . 1.4 MHz 20 MHz. 2600 MHz, 1.4 MHz 10 MHz, . 10 MHz 20 MHz . 1.4 MHz 5 MHz 10 MHz 20 MHz. 5 MHz 10 MHz .

1800 MHz 5 MHz, 1800 MHz 1.4 MHz. 900 MHz 20 MHz, 1800 MHz 10 MHz.

3.3 3


9001.414.7823.947

514.7143.43

1016.174.227

2018.3064.213

18001.416.2294.024

515.5424.111

1015.6453.986

2014.7873.839

26001.415.4243.992

516.1723.897

1017.543.984

2017.674.016

3.5

3.5

3.6

3.5, 3.5 3.6 3GPP ACS 40 dB. 900 MHz, 1.4 MHz 10 MHz, . 10 MHz 20 MHz . 1.4 MHz 5 MHz 10 MHz 20 MHz , 5 MHz 10 MHz. 1800 MHz, 1.4 MHz 5 MHz 10 MHz 20 MHz . 5 MHz 10 MHz . 1.4 MHz 5 MHz. 5 MHz 20 MHz. 2600 MHz, 1.4 MHz 20 MHz, . 1.4 MHz 5 MHz. 5 MHz 20 MHz .

900 MHz 5 MHz. 900 MHz 20 MHz, 900 MHz 10 MHz.

3 , LTE OFDMA DL SEAMCAT, . , .

4. CONCLUSION

, LTE OFDMA DL SEAMCAT, . , .

LTE , , .

SEAMCAT , , LTE. LTE , , , .

References

[1] SEAMCAT

[2] An IP-Based Packet Test Environment forTD-LTE and LTE FDD,Pin-Jen Lin,Yi-Bing Lin, (2014)

[3] K.Fazel, S.Kaiser. Multi-Carrier and Spread Spectrum, From OFDM and MC-CDMA to LTE and WiMAX, (2008)

[4] Performance Analysis of OFDMA in LTE,Alaa Deshar Farhood, Neelesh Agarwa, A.K. Jaiswa, Navendu Nitin and Maham Kamil Naji, (2014)

[5] Mitigation of Co-Channel Interference in Long Term Evolution, Christ College of Engg. & Technology Moolakulam, Pondicherry, India, (2013)

[6] How can mobile and broadcasting use adjacent bands? Walid Sami, EBU TECHNICAL, (2011)

[7] Vulnerability of LTE to Hostile Interference, Marc Lichtman, Jeffrey H. Reed, T. Charles Clanc and Mark Norton, (2014)

[8] Time and Frequency Synchronisation in 4G OFDM Systems, Adrian Langowski, Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking, (2009)

[9] Theevolutionto4Gcellularsystems:LTE-Advanced IanF. Akyildiz, DavidM.Gutierrez-Estevez, EliasChavarriaReyes, (2010)

[10] VoIP on 3GPP LTE Network: A Survey Oluwadamilola I. Adu, Babasanjo O. Oshin and Adeyemi A. Alatishe, (2013)

[11] Performance Analysis of OFDMA in LTE,Alaa Deshar Farhood, Neelesh Agarwa, A.K. Jaiswa, Navendu Nitin and Maham Kamil Naji, (2014)

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