BEP of Fourier Transform and Discrete Wavelet Transform based OFDM
نویسندگان
چکیده
Abstract—This paper studies the analytical bit error probability of Discrete Wavelet Transform and Fast Fourier Transform based Orthogonal Frequency Division Multiplexing (OFDM) systems. Closed form expressions of the bit error probabilities for both two methods are derived and validated. In the simulation, two channels with different impulse response are adopted. The results show that the Discrete Wavelet Transform based OFDM performs better than the classic OFDM in both channels.
منابع مشابه
BER Analysis of Wavelet Based OFDM Using Different Modulation Techniques
In this paper, we propose a new scheme for data transmission in Long Term Evolution (LTE) methods based on Orthogonal Frequency Division Multiplexing (OFDM). In OFDM scheme we compare Discrete Fourier Transform (DFT) based OFDM with wavelet based technique. In this method, DWT-COIFLET (Discrete wavelet transform) is used for wavelet decomposition, we compare COIFLET wavelet with traditional wav...
متن کاملComparative Analysis of OFDM under FFT and DWT Based Image Transmission
In This paper, the bit error rate analysis (BER) and peak signal to noise ratio performance (PSNR) of discrete wavelet transform (DWT)-OFDM system is compared with conventional fast fourier transform (FFT)-OFDM system for colour image transmission, here we use different error correcting codes like Reed Solomon codes, low density parity check codes (LDPC). The transmitted colour image is found t...
متن کاملPerformance Comparison of Haar Ofdm and Daubechies Ofdm in Presence of Carrier Frequency Offset (cfo) and Doppler Effect
Present day wireless communication systems demand for high data rates. Orthogonal frequency division multiplexing (OFDM) has emerged as a promising technology to provide these high data rates. OFDM is a digital modulation technique which divides the available spectrum into different sub bands. As a result data can be transmitted simultaneously using multiple subcarriers. Conventional OFDM is ba...
متن کاملBER Performance for FFT and Wavelet Based OFDM Systems over AWGN Channel
An Orthogonal Frequency Division Multiplexing (OFDM) scheme offers high spectral efficiency and better resistance to fading environments. In OFDM the data is modulated using multiple numbers of sub-carriers that are orthogonal to each other because of which the problems associated with other modulation schemes such as Inter Symbol Interference (ISI) and Inter Carrier Interference (ICI) are redu...
متن کاملA Novel Approach for Generation of All-optical Ofdm Using Discrete Cosine Transform Based on Optical Couplers in a Radio-over-fiber Link
A novel method for100Gbpsall-optical OFDM using Discrete Cosine Transform in a Radio-Over-Fiber link is proposed. The system is designed simply using both symmetric and asymmetric passive optical couplers. DCT is achieved all-optically by adjusting the length and splitting ratio of the couplers. The performance of the system is compared with all-optical OFDM based on Discrete Fourier, Discrete ...
متن کامل