Performance Analysis Of Multicarrier Modulation scheme In Mimo System

Abstract

The escalating volume of data generated by mobile phones, laptops, and IoT devices has led to an newlineincreasing demand for greater bandwidth. The continuous need for internet access, driven by social newlinemedia, business operations, and big data, emphasizes the imperative for advancements in newlinetechnology. Among the promising solutions for the fifth generation (5G) of wireless newlinecommunication, Frequency-Domain Equalization with Offset Quadrature Amplitude Modulation newline(FBMC/OQAM) stands out. FBMC/OQAM minimizes orthogonality requirements, enabling newlinesuperior out-of-band emission control and efficient bandwidth utilization. newlineIn the FBMC/OQAM transmission, sub-carriers operate independently in the time domain, newlinepresenting a unique characteristic. However, the resulting composite signal experiences notable newlineamplitude variation, leading to challenges in managing peak-to-average power ratio (PAPR). This newlineresearch introduces a novel FBMC technique integrating Discrete Fourier Transform (DFT) spread newlineand Improved Time Space Modulation (ITSM) conditions. The proposed scheme executes DFT newlineand IDFT only once, simulating the behavior of a single carrier system. The primary focus of this newlinethesis revolves around addressing two key challenges in FBMC PAPR and imaginary newlineinterference. newlineTo mitigate PAPR, a hybrid technique is proposed, combining minimum PAPR blocking, clipping, newlineand and#956;-Law companding. Comprehensive simulations have been conducted to demonstrate the newlinesuperior performance of the proposed method. Despite the numerous advantages offered by FBMC newlineover traditional Orthogonal Frequency Division Multiplexing (OFDM) approaches, it grapples newlinewith the issue of imaginary interference, impacting Bit Error Rate (BER) performance at the newlinereceiver end. newlineRecent advancements have proposed ICI-free schemes, but their analyses often overlook several newlineinterfering terms. In this study, the concept of inverse filtering is harnessed to address both Inter newlineCarrier Interference (ICI) and Inter Symbol Interference (ISI) without neglecting other interfering newlineterms. Mathematical modeling is employed to incorporate ICI, ISI, and additional interfering newlineterms, outlining the application of inverse filtering to mitigate their detrimental effects. The newlinesimulation phase is conducted using MATLABR newlinesoftware, providing a practical validation of the newlineproposed approach. newline