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The study delves into the essence of urban wireless communication, highlighting the significance of OFDM technology. Starting with an introduction to its purpose, the study explores the challenges of Inter-Symbol Interference in urban environments due to multipath effects. It elaborates on OFDM's technique of dividing signals into orthogonal subcarriers and utilizing cyclic prefixes to mitigate interference. Real-world applications of OFDM in LTE, 5G NR, and smart city technologies are...