![International Journal of Trend in Scientific Research and Development (IJTSRD) @ www.ijtsrd.com eISSN: 2456-6470
@ IJTSRD | Unique Paper ID - IJTSRD21380 | Volume – 3 | Issue – 3 | Mar-Apr 2019 Page: 536
A. Preamble detection in SNR at 25dB
Fig. 1: Correlation between Different signals at
SNR=25 dB
Table 1: Performance analysis of Preamble detection
at SNR=25dB
Preamble
Technique
SNR
Maximum
Detection Value
Sample
MSC
25dB
1.0 96
MML 1.0 65
MINN 1.0 75
MGM 1.0 65
Fig. 2: Comparisons of Detection techniques at
SNR=25dB
B. Preamble detection in SNR at 45dB
Fig 2: Correlation between Different signals at
SNR=45 dB
Table 2: Performance analysis of Preamble detection
at SNR=45dB
Preamble
Technique
SNR
Maximum
Detection Value
Sample
MSC
45dB
1.0 90
MML 1.0 72
MINN 1.0 120
MGM 1.0 65
Fig. 4: Comparisons of Detection techniques at
SNR=25dB
Conclusion:
In above result we have done analysis of all preamble
techniques (MSC, MML, MSC and MGM) at different SNR
value (25dB and 45dB). The MINN technique is better than
all techniques because its performance is smooth. It
gradually down and rise at all point so t MINN is better than
all techniques.
References
[1] Sumeeth Nagaraj, Sheehan Khan andChristianSchlegel
“On Preamble Detection in Packet-Based Wireless
Networks” 2006 IEEE Ninth International Symposium
on Spread Spectrum Techniques and Applications.
[2] Mithun Sarode “Preamble Detection Of IEEE 802.16”
proceedings of international conference on
nanoscience, engineering & advanced computing
(ICNEAC-2011).
[3] Chakchai So-In,Raj Jain and Abdel-Karim Tamimi,
“Scheduling in IEEE 802.16e Mobile WiMAXNetworks:
Key Issues and a Survey” IEEE Journal on Selected
Areas in Communications, Vol. 27, NO. 2, February
2009 page no 156-171.
[4] L. J. Cimini, “Analysis and simulation of a digital mobile
channel using orthogonal frequency division
multiplexing” IEEE Trans. Commun., vol. 33, no. 7, pp.
665–675, Jul. 1985.
[5] P. H. Moose, “A technique for orthogonal frequency
division multiplexing freuency offset correction” IEEE
Trans. Commun., vol. 42, no. 10, pp. 2908–2924, 1994.
[6] H. MINN, V. K. Bhargava, and K. B. Letaief, “A robust
timing and frequency synchronization for OFDM
systems” IEEE Trans. Wireless Commun., vol. 2, no. 4,
pp. 822–838, Jul. 2003.
[7] T. M. Schmidl and D. C. Cox, “Robust frequency and
timing synchronization for OFDM” IEEE Trans.
Commun., vol. 45, no. 12, pp. 1613–1621, Dec. 1997.
[8] R. N. “Blind OFDM symbol synchronization in ISI
channels” IEEE Trans. Commun., vol. 50, no. 9, pp.
1525–1534, Sep. 2002.
[9] Kun-Chien Hung and David W. Lin “Joint Detection of
Integral Carrier Frequency Offset and Preamble Index
in OFDMA WiMAX Downlink Synchronization” IEEE
Communications publication in the WCNC 2007. Page
no 1961-1966.
[10] Jungwon Lee, Jihwan P. Choi, and Hui-Ling Lou “Joint
Maximum Likelihood Estimation of Channel and
Preamble Sequence for WiMAX Systems” IEEE
Transaction on Wireless Communications, VOL. 7, NO.
11, November 2008 page no 4291-4303.](https://image.slidesharecdn.com/121performanceanalysisofpreambledetectionatmaximumthroughputlevelforofdm-190615054753/85/Performance-Analysis-of-Preamble-Detection-at-Maximum-Throughput-Level-for-OFDM-2-320.jpg)
Performance Analysis of Preamble Detection at Maximum Throughput Level for OFDM
- 1. International Journal of Trend in Scientific Research and Development (IJTSRD) Volume: 3 | Issue: 3 | Mar-Apr 2019 Available Online: www.ijtsrd.com e-ISSN: 2456 - 6470 @ IJTSRD | Unique Paper ID – IJTSRD21380 | Volume – 3 | Issue – 3 | Mar-Apr 2019 Page: 535 Performance Analysis of Preamble Detection at Maximum Throughput Level for OFDM Ayushi Upadhyay Department of Electronics and Communication, LNCT Indore, Madhya Pradesh, India How to cite this paper: Ayushi Upadhyay "Performance Analysis of Preamble Detection at Maximum Throughput Level for OFDM" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456- 6470, Volume-3 | Issue-3, April 2019, pp.535-536, URL: http://www.ijtsrd.co m/papers/ijtsrd213 80.pdf Copyright © 2019 by author(s) and International Journal of Trend in Scientific Research and Development Journal. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0) (http://creativecommons.org/licenses/ by/4.0) ABSTRACT WiMAX which represents “Worldwide Interoperabilityfor MicrowaveAccess”is a major part of BWN “broadband wireless network” having IEEE 802.16 standard provides innovative fixed as well as mobile platform for broadband internet access anywhere in anytime. In this paper we, investigate signal detection and frame synchronizationforwirelessnetwork signalusingpreamble detection method such as MSC, MGM, MMSE and MML and preamble we used AWGN and Reyligh channel, also used modulation techniques QAM with OFDM. The performance has been concluded based Sample versus Detection value and output through MATLAB-R3013a Simulation. KEYWORDS: AWGN, SNR, BPSK, OFDM, Detection of Preamble I. INTRODUCTION WiMAX (Worldwide Interoperability for MicrowaveAccess) is a family of wireless communication standards based on the IEEE 802.16 set of standards, which provide multiple physical layer (PHY) and Media Access Control (MAC) options. The IEEE 802.16 group was formed in 1998 to develop an air interface standard for wireless broadband. The group’s initial focus was the development of a LOS- based point-to-multipoint wireless broadband system for operation in the 10GHz-66GHz millimeter wave band. The resulting standard-the original 802.16 standard, completed in December 2001-was based on a single carrier physical (PHY) layer with a burst time division multiplexed (TDM) MAC layer. II. Methods of Preamble Detection In simple terms, preamble is used to communicate to the receiver that transmitted data is on theway. Inthecontext of Wi-Fi (802.11) Technology, Preamble allows the receiver to acquire the wireless signal and synchronize itself with the transmitter. In wireless OFDM systems like WiMAX (802.16e), preamble is first symbol of the downlink transmission which is used for initial frame timing/synchronization by mobile stations. Initially, whena MS (Mobile Station) enters a network, it has tosearch forthe neighboring BSs (Base Station) in order to achieve synchronization. Preamble detection is done for the synchronization and synchronization is done in the basis of two types symbol timing and carrier frequencyoffset. OFDM has been shown to be sensitive to symbol timing errors. Symbol timing estimation is typically performed in two steps: 1. Course estimate in the time domain, 2. Fine estimate in the frequency domain. III. Simulation Results In this correlation of preamble detection (maximum normalized correlation (MNC or MINN), Schmidt and Cox maximum normalized correlation (SC or MSC), maximum normalized correlation using a geometric mean (GM or MGM), maximum likelihood (ML or MML) method are comparison on OFDMusingAWGNChannel.In thismodelwe have used QAM (Quadrature Amplitude Modulation) in modulation technique, and required SNR value is 25dB and 45dB the performance done by used MATLAB R2013a version. IJTSRD21380
- 2. International Journal of Trend in Scientific Research and Development (IJTSRD) @ www.ijtsrd.com eISSN: 2456-6470 @ IJTSRD | Unique Paper ID - IJTSRD21380 | Volume – 3 | Issue – 3 | Mar-Apr 2019 Page: 536 A. Preamble detection in SNR at 25dB Fig. 1: Correlation between Different signals at SNR=25 dB Table 1: Performance analysis of Preamble detection at SNR=25dB Preamble Technique SNR Maximum Detection Value Sample MSC 25dB 1.0 96 MML 1.0 65 MINN 1.0 75 MGM 1.0 65 Fig. 2: Comparisons of Detection techniques at SNR=25dB B. Preamble detection in SNR at 45dB Fig 2: Correlation between Different signals at SNR=45 dB Table 2: Performance analysis of Preamble detection at SNR=45dB Preamble Technique SNR Maximum Detection Value Sample MSC 45dB 1.0 90 MML 1.0 72 MINN 1.0 120 MGM 1.0 65 Fig. 4: Comparisons of Detection techniques at SNR=25dB Conclusion: In above result we have done analysis of all preamble techniques (MSC, MML, MSC and MGM) at different SNR value (25dB and 45dB). The MINN technique is better than all techniques because its performance is smooth. It gradually down and rise at all point so t MINN is better than all techniques. References [1] Sumeeth Nagaraj, Sheehan Khan andChristianSchlegel “On Preamble Detection in Packet-Based Wireless Networks” 2006 IEEE Ninth International Symposium on Spread Spectrum Techniques and Applications. [2] Mithun Sarode “Preamble Detection Of IEEE 802.16” proceedings of international conference on nanoscience, engineering & advanced computing (ICNEAC-2011). [3] Chakchai So-In,Raj Jain and Abdel-Karim Tamimi, “Scheduling in IEEE 802.16e Mobile WiMAXNetworks: Key Issues and a Survey” IEEE Journal on Selected Areas in Communications, Vol. 27, NO. 2, February 2009 page no 156-171. [4] L. J. Cimini, “Analysis and simulation of a digital mobile channel using orthogonal frequency division multiplexing” IEEE Trans. Commun., vol. 33, no. 7, pp. 665–675, Jul. 1985. [5] P. H. Moose, “A technique for orthogonal frequency division multiplexing freuency offset correction” IEEE Trans. Commun., vol. 42, no. 10, pp. 2908–2924, 1994. [6] H. MINN, V. K. Bhargava, and K. B. Letaief, “A robust timing and frequency synchronization for OFDM systems” IEEE Trans. Wireless Commun., vol. 2, no. 4, pp. 822–838, Jul. 2003. [7] T. M. Schmidl and D. C. Cox, “Robust frequency and timing synchronization for OFDM” IEEE Trans. Commun., vol. 45, no. 12, pp. 1613–1621, Dec. 1997. [8] R. N. “Blind OFDM symbol synchronization in ISI channels” IEEE Trans. Commun., vol. 50, no. 9, pp. 1525–1534, Sep. 2002. [9] Kun-Chien Hung and David W. Lin “Joint Detection of Integral Carrier Frequency Offset and Preamble Index in OFDMA WiMAX Downlink Synchronization” IEEE Communications publication in the WCNC 2007. Page no 1961-1966. [10] Jungwon Lee, Jihwan P. Choi, and Hui-Ling Lou “Joint Maximum Likelihood Estimation of Channel and Preamble Sequence for WiMAX Systems” IEEE Transaction on Wireless Communications, VOL. 7, NO. 11, November 2008 page no 4291-4303.