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Abstract

With the increasing prevalence of internet services in our daily lives, there is a growing demand for spectrum, resulting in a shortage of available frequencies. This is primarily due to the recent surge in subscribers seeking faster and more dependable data rates. Researchers globally have suggested various solutions to combat the spectrum shortage through technologies, modulation schemes, beamforming, intelligent reflective surfaces, and channel coding schemes. With respect to channel coding, multiple codes have been proposed to overcome challenging and uncertain channel conditions including Turbo, Fountain, and LDPC (Low Density Parity Check) Codes. In addition to this, several transformation techniques such as wavelet transforms have also been evolved to enhance the spectral efficiency. This paper introduces a DWT (Discrete wavelet transform)-incorporated LDPC system to meet the rigorous demands of 5G deployment and use cases. A comparative analysis of the proposed codes is conducted to assess their suitability for next-generation communication networks, considering SNR (Signal-to-Noise Ratio), BER (Bit Error Rate), and spectral efficiency. Simulation results indicate that the proposed code outperforms the existing codes by achieving a BER of 10-4with SNR=7dB for Rayleigh Faded wireless channel Further, the proposed system is employed in STBC (Space Time Block Coded) and SFBC (Space Frequency Block-Coded) systems for high-speed communication. Simulated results reveal that the proposed system works well in SFBC systems and deemed to be the most suitable code for the successful deployment of 5G and beyond systems

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