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On the BER Evaluation for Wireless OFDM System over Multipath Fading Channels
Abstract
An OFDM system is deliberated for various
modulation schemes like BPSK, QPSK, 8PSK, 16PSK, QAM to
uncover the preeminent permutation with OFDM technology. This
work is carried out over the Rayleigh- and Rician- channels with
additive white Gaussian noise (AWGN) for various normalized
signal-to-noise ratio (SNR) values. Furthermore, number of errors
measurement is also premeditated to assess the system performance
along with the best combination to be used in wireless systems. The
work simulated in this paper comes out with some new and brief
results under different channel conditions. Our simulative results
recommend BPSK+OFDM to be implemented to provide best spectral
efficiency with an alternative of QPSK+OFDM under worst channel
conditions for Rayleigh channels. For, Rician channels, BPSK is
recommended under poor- and good- channel conditions. Under best
channel conditions, BPSK and 8PSK outperforms. This work also
present the impact of number of subcarriers over the BER of the
system and has been revealed out that BPSK, QPSK and 8PSK offer
better spectral efficiency by increasing number of subcarriers up to a
certain level under best channels conditions for Rician channel.
Keywords
References
IEEE standard for wireless LAN: Medium Access Control and Physical
Layer Specification, P802.11, January 1999.
Khoa N. Le and Kishor P. Dabke, “BER of OFDM with diversity and
pulse shaping in Rayleigh fading environments,” Digital Signal
Processing, vol. 20, issue 6, pp. 1687–1696, December 2010.
Taewon Hwang, “OFDM and Its Wireless Applications: A Survey,”
IEEE Trans. Vehicular Technology, vol. 58, issue 4, pp.1673-1694, May
P. H. Moose, “A technique for orthogonal frequency division
multiplexing frequency offset correction,” IEEE Trans. Commun., vol.
, no. 10, pp. 2908–2914, Oct. 1994.
B. Stantchev and G. Fettweis, “Time-variant distortions in OFDM,” IEEE
Commun. Lett., vol. 4, no. 10, pp. 312–314, Sep. 2000.
G. L. Stüber and M. Russell, “Terrestrial digital video broadcasting for
mobile reception using OFDM,” in IEEE Global Telecommunications
Conf., Singapore, Nov. 1995, vol. 3, pp. 2049–2053.
J. Li and M. Kavehrad, “Effects of time selective multipath fading on
OFDM systems for broadband mobile applications,” IEEE Commun.
Lett., vol. 3, no. 12, pp. 332–334, Dec. 1999..
T. Keller and L. Hanzo, “Adaptive multicarrier modulation: A
convenient framework for time–frequency processing in wireless
communications,” Proc. IEEE, vol. 88, no. 5, pp. 611–640, May 2000.
Y. Zhao and S. G. Häggman, “BER analysis of OFDM communication
systems with intercarrier interference,” in IEEE Int. Conf. S38-02.
Y. Zhao and S. G. Häggman, “BER analysis of OFDM communication
systems with intercarrier interference,” in IEEE Int. Conf.
Communication Technology, Beijing, China, Oct. 1998, vol. 2, pp. 1–5.
K. Sathananthan and C. Tellambura, “Probability of error calculation of
OFDM systems with frequency offset,” IEEE Trans. Commun., vol. 49,
no. 11, pp. 1884–1888, Nov. 2001.
H. Cheon and D. Hong, “Effect of channel estimation error in OFDM
based WLAN,” IEEE Commun. Lett., vol. 6, no. 5, pp. 190–192, May
Scott L. Linfoot, Mohammad K. Ibrahim and Marwan M. Al-Akaidi,
“Orthogonal Wavelet Division Multiplex: An Alternative to OFDM,”
IEEE Trans. Consumer Electronics, vol. 53, issue 2, pp.278-284, May
Zhaocheng Wang and R.A. Stirling-Gallacher, “Frequency reuse scheme
for cellular OFDM systems”, Electronic letter, vol. 38. No. 8, April 2002
Z. Wang and R.A. Stirling-Gallacher, “Improving performance of
multi-user OFDM systems using bit-wise interleaver”, Electronic letter,
vol. 37. No. 19, September 2001
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