Article

# BER Calculation using Matlab Simulation for OFDM Transmission

Lecture Notes in Engineering and Computer Science 01/2008;
Source: DOAJ
0 Bookmarks
·
377 Views
• Source
##### Article: BER comparison of DCT-OFDM and DFT-OFDM for different modulation techniques in multipath Rayleigh fading environment
[Hide abstract]
ABSTRACT: In wireless communication Orthogonal Frequency Division Multiplexing is gaining its importance as it is suitable for high speed data rates. It is a multi carrier system, which is commonly implemented for transmission of signals nowadays. In this system, orthogonally placed sub — carriers are used to carry data from transmitter end to receiver end. In this paper, Bit Error Rate comparison of Discrete Fourier Transform-based Orthogonal Frequency Division Multiplexing is compared with Discrete Cosine Transform-based Orthogonal Frequency Division Multiplexing for different modulation techniques over Multipath Rayleigh Fading Channel. It is observed from results that, Bit Error Rate shift in case of Discrete Cosine Transform-based Orthogonal Frequency Division Multiplexing is less then compared to Bit Error Rate shift in case of Discrete Fourier Transform-based Orthogonal Frequency Division Multiplexing system and Quadrature Amplitude Modulation shows better performance as compared to Phase Shift Keying for higher constellation index.
01/2012;
• Source
##### Article: BER Comparison of DCT-based OFDM and FFT-based OFDM using BPSK Modulation over AWGN and Multipath Rayleigh Fading Channel
[Hide abstract]
ABSTRACT: In this paper, the Bit Error Rate (BER) performance of Fast Fourier Transform-based Orthogonal Frequency Division Multiplexing system (FFT-Based OFDM) is compared with Discrete Cosine Transform-based Orthogonal Frequency Division Multiplexing system (DCT-Based OFDM) using Binary Phase Shift Keying (BPSK) as a modulation technique over Additive White Gaussian Noise environment (AWGN) and Multipath Rayleigh Fading environment. From the results it is clear that, the BER shift in case of DCT-Based OFDM is less as compared to FFT-Based OFDM. In addition to this we have also compare the BER performance of FFT-Based & DCT-Based OFDM over Additive White Gaussian Noise environment and Multipath Rayleigh Fading environment and it is observed that Bit Error Rate performance of FFT-Based & DCT-Based OFDM over AWGN is better than Multipath Rayleigh Fading environment.