Essays about: "adaptive qam"

Found 5 essays containing the words adaptive qam.

  1. 1. A Blind Constellation Agnostic VAE Channel Equalizer and Non Data-Assisted Synchronization

    University essay from Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Author : Fredrik Reinholdsen; [2021]
    Keywords : Blind; Equalization; Machine Learning; Variational; Autoencoder; VAE; Constellation; Agnostic; Synchronization; Neural; Networks;

    Abstract : High performance and high bandwidth wireless digital communication underlies much of modern society. Due to its high value to society, new and improved digital communication technologies, allowing even higher speeds, better coverage, and lower latency are constantly being developed. READ MORE

  3. 2. Symmetric alpha-Stable Adapted Demodulation and Parameter Estimation

    University essay from Luleå tekniska universitet/Signaler och system

    Author : Kristoffer Hägglund; [2018]
    Keywords : ;

    Abstract : Transmission and reception of signals in wireless communication systems is affected by additive interference corrupting the signal. Traditionally, the interference is assumed to be AWGN and the system designs are usually based on that assumption. READ MORE

  4. 3. Extraction of radio frequency quality metric from digital video broadcast streams by cable using software defined radio

    University essay from Kommunikationssystem; Tekniska högskolan

    Author : Viktor Eriksson; [2013]
    Keywords : QAM; DVB-C; MER; BER; Gardner; Phase locked loop; Mueller Muller; RRC-filter; Carrier recovery; Timing Recovery; Matched filtering;

    Abstract : The purpose of this master thesis was to investigate how effiecient the extractionof radiofrequency quality metrics from digital video broadcast (DVB) streamscan become using software defined radio. Software defined radio (SDR) is a fairlynew technology that offers you the possibility of very flexible receivers and transmitters where it is possible to upgrade the modulation and demodulation overtime. READ MORE

  5. 4. PERFORMANCE ENHANCEMENT OF OFDM IN PAPR REDUCTION USING NEW COMPANDING TRANSFORM AND ADAPTIVE AC EXTENSION ALGORITHM FOR NEXT GENERATION NETWORKSPERFORMANCE ENHANCEMENT OF OFDM IN PAPR REDUCTION USING NEW COMPANDING TRANSFORM AND ADAPTIVE AC EXTENSION ALGORITHM FOR NEXT GENERATION NETWORKS

    University essay from Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Author : CLEMENT RANJITH ANTHIKKAD & IRFAN AHMED BAIG; [2013]
    Keywords : Orthogonal Frequency Division Multiplexing OFDM ; Peak-to-Average Power Ratio PAPR ; Complementary Cumulative Distribution Function CCDF ; Partial Transmit Sequence PTS ; Tone Reservation TR .;

    Abstract : This paper presents a new hybrid PAPR reduction technique for the OFDM signal, which combines a multiple symbol representations method with a signal clipping method. The clipping method is a nonlinear PAPR reduction scheme, where the amplitude of the signal is limited to a given threshold. READ MORE

  6. 5. Performance Evaluation of IEEE 802.16e (Mobile WiMAX) in OFDM Physical Layer

    University essay from Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Author : Gazi Faisal Ahmed Jubair; Muhammad Imran Hasan; Md. Obaid Ullah; [2009]
    Keywords : WiMAX Performance;

    Abstract : WiMAX is introduced by the Institute of Electrical and Electronic Engineers (IEEE) which is standard designated 802.16d-2004 (used in fixed wireless applications) and 802.16e-2005 (mobile wireless) to provide a worldwide interoperability for microwave access. READ MORE