PERFORMANCE IMPROVEMENT OF OFDM

Authors

  • Vishakha Kulkarni Electronics And Telecommunication Department, Deogiri Institute Of Engineering And Management Studies
  • Vitthal Bhosale Electronics And Telecommunication Department, Deogiri Institute Of Engineering And Management Studies

Keywords:

BCH coding, Convolution coding, Bit Error Rate (BER), AWGN Channel coding, Orthogonal Frequency Division Multiplexing (OFDM), Adaptive Modulation

Abstract

In the paper the convolution coding and BCH coding is used to analyze the Bit Error Rate performance of
OFDM system over the AWGN channel and only the adaptive modulation is considered. First we have used quadrature
amplitude modulation (QAM) and phase shift keying (PSK) to study the OFDM system performance of uncoded adaptive
modulation, for the further improvement of system the exploit convolution coding to OFDM system. In the OFDM system
the estimation of Signal to noise ratio is done at the receiver and then the feedback channel is used to transmit it to the
transmitter, and to maintain the constant bit error rate lower than requested BER the transmitter selects appropriate
modulation scheme an coding rate based on estimated SNR. By demonstrating the superiority of adaptive modulation
schemes compared to fixed transmission schemes the obtained result shows the enhancement in terms of bit error rate
(BER) & throughput

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Published

2018-04-25

How to Cite

Vishakha Kulkarni, & Vitthal Bhosale. (2018). PERFORMANCE IMPROVEMENT OF OFDM. International Journal of Advance Engineering and Research Development (IJAERD), 5(4), 1897–1900. Retrieved from https://www.ijaerd.org/index.php/IJAERD/article/view/3310

Issue

Vol. 5 No. 4 (2018): Volume 5 Issue 4 April 2018

Section

Articles