As per the most recent literature, Orthogonal Frequency Division Multiplexing (OFDM), a multi access technique, is considered most suitable for the 3G, 4G and 5G techniques in high speed wireless communication. What made OFDM most popular is its ability to deliver high bandwidth efficiency and superior data rate. Besides it, high value of peak to average power ratio (PAPR) and Inter Carrier Interference (ICI) are the challenges to tackle down via appropriate mitigation scheme. As a research contribution in the present work, an improved self-cancellation (SC) technique is designed and simulated through Simulink to mitigate the effect of ICI. This novel proposed technique (Improved SC) is designed over discrete wavelet transform (DWT) based OFDM and compared with conventional SC scheme over different channel conditions i.e. AWGN and Rayleigh fading environments. It is found that proposed DWT-OFDM with Improved SC scheme outperforms conventional SC technique significantly, under both AWGN and Rayleigh channel conditions. Further, in order to justify the novelty in the research contribution, a Split-DWT based Simulink model for Improved SC scheme is investigated to analyse the BER performance. This Split-DWT based Simulink model presented here foretells the future research potential in wavelet hybridization of OFDM to side-line ICI effects more efficiently.

根据最新文献，正交频分复用（OFDM）是一种多址技术，被认为最适合高速无线通信中的3G，4G和5G技术。使OFDM最受欢迎的是其提供高带宽效率和出色数据速率的能力。除此之外，高峰均功率比（PAPR）和载波间干扰（ICI）也是通过适当的缓解方案来应对的挑战。作为当前工作的一项研究贡献，通过Simulink设计并模拟了一种改进的自消除（SC）技术，以减轻ICI的影响。在基于离散小波变换（DWT）的OFDM上设计了这项新颖的技术（改进的SC），并在不同信道条件下与传统SC方案进行了比较，例如 AWGN和瑞利衰落环境。发现在AWGN和瑞利信道条件下，具有改进的SC方案的提出的DWT-OFDM明显优于传统的SC技术。此外，为了证明该研究成果的新颖性，研究了基于Split-DWT的Simulink改进SC方案模型，以分析BER性能。本文介绍的基于Split-DWT的Simulink模型预示了OFDM小波混合到边际ICI效应的未来研究潜力。研究了一种基于Split-DWT的改进SC方案Simulink模型，以分析BER性能。本文介绍的基于Split-DWT的Simulink模型预示了OFDM小波混合到边际ICI效应的未来研究潜力。研究了一种基于Split-DWT的改进SC方案Simulink模型，以分析BER性能。本文介绍的基于Split-DWT的Simulink模型预示了OFDM小波混合到边际ICI效应的未来研究潜力。