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- Title
Modified Method of PAPR Reduction using Clipping and Filtering for Image Transmission with OFDM.
- Authors
Hassan, Ghassan Muslim; Mukred, Muaadh; Gumaei, Abdu Hasan
- Abstract
Due to the capability of OFDM (Orthogonal Frequency Division Multiplexing) to handle difficult channels, the most agreeable modulation for the multi-carrier scheme in present wireless communications is to improve an all-purpose modulation scheme, especially with high data rates. The image in this research article was transmitted and received on a noisy channel using an OFDM simulation technique. Since the average peak power ratio (PAPR) is one of the main disadvantages of OFDM, a new method has been proposed to reduce the PAPR using the clipping and filtering (CF) method. When the OFDM signal has a high PAPR, it means that many subcarrier components will be added through the operation of IFFT. Also, choosing the type of modulation to examine and getting a perfect type of OFDM system that is used for transmitting the image. Furthermore, signal-to-noise ratio (SNR) was considered to find the PAPR effect on the OFDM signal. The new method was tested to get a reduction of PAPR concerning CF and without CF. This method depends on clipping the signal before transmitting it, by using a method to overcome a nonlinear distortion, and therefore, decrease the bit error rate (BER). Then a filter with multi-stages was used to minimize the noise. This whole process was repeated several times to overcome the difficulties of transmitting/receiving the signal including PAPR. BER and SNR show wonderful outcomes when BPSK is chosen. Control over transmission and reception is also considered to be the type of modulation.All simulation results were defined using an Additive White Gaussian Noise (AWGN) channel.
- Subjects
IMAGE transmission; ADDITIVE white Gaussian noise; ORTHOGONAL frequency division multiplexing; BIT error rate; WIRELESS communications; WIRELESS channels; MULTI-carrier modulation
- Publication
Al-Mustansiriyah Journal of Science, 2023, Vol 34, Issue 4, p75
- ISSN
1814-635X
- Publication type
Article
- DOI
10.23851/mjs.v34i4.1400