Sökning: "IFFT"

Visar resultat 1 - 5 av 15 uppsatser innehållade ordet IFFT.

  1. 1. 64-point FFT Instruction Implementation and Evaluation on a Microcode Programmable Processor

    Master-uppsats, Linköpings universitet/Institutionen för systemteknik; Linköpings universitet/Tekniska fakulteten

    Författare :Yongjun Liu; Zejun Huang; [2022]
    Nyckelord :FFT; Instruction design;

    Sammanfattning : Fast Fourier Transform is an efficient algorithm for computing the Discrete Fourier Transform (DFT) and one of the most important algorithms used in many digital signal processing applications over decades. This thesis presents an efficient implementation method of a 32-bit complex number 64-point FFT instruction on a micro-programmable processor. LÄS MER

  3. 2. Digital signalbehandling i realtid; en jämförelse mellan CPU och GPU : Brusfiltrering av ljudsignal med hjälp av FFT

    Kandidat-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Ludwig Emilsson; [2020]
    Nyckelord :;

    Sammanfattning : Over the past 40 years, music production has evolved from being an analog process to a digital one. Analog instruments and filtering of signals have been complimented and partially replaced by digital instruments and filters in the form of software. LÄS MER

  4. 3. Signal processing in massive MIMO systems realized with low complexity hardware

    Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknik

    Författare :Sara Gunnarsson; Micaela Bortas; [2017]
    Nyckelord :massive MIMO; energy efficiency; 5G; low complexity; digital signal processing; supply voltage; Technology and Engineering;

    Sammanfattning : The global mobile data traffic, as well as the energy consumption, for networks is constantly increasing. For this reason, techniques which can provide higher spectral efficiency while being more energy efficient are needed. LÄS MER

  5. 4. Machine Learning for PAPR Distortion Reduction in OFDM Systems

    Master-uppsats, KTH/Signalbehandling

    Författare :Manish Sonal; [2016]
    Nyckelord :Index Terms- OFDM; machine learning; PAPR; neural networks;

    Sammanfattning : The purpose of the project is to investigate the possibility of using modern machine learning to model nonlinear analog devices like the Power Amplifier (PA), and study the feasibility of using such models in wireless systems design. Orthogonal frequency division multiplexing (OFDM) is one of the most prominent modulation technique used in several standards like 802. LÄS MER

  7. 5. Performance Evaluation of Error Correcting Techniques for OFDM Systems

    Master-uppsats, Blekinge Tekniska Högskola/Institutionen för kommunikationssystem

    Författare :Yasir Javed Qazi; Jawad Ahmed Malik; Safwan Muhammad; [2014]
    Nyckelord :OFDM; Linear block codes; Convolution codes; Reed-Solomon codes;

    Sammanfattning : Orthogonal frequency-division multiplexing (OFDM) systems provide efficient spectral usage by allowing overlapping in the frequency domain. Additionally, they are highly immune to multipath delay spread. LÄS MER