KMITL

Permanent URI for this communityhttps://dspace.kmitl.ac.th/handle/123456789/1

Browse

Settings

Subject: search.filters.subject.5G new radio

Search Results

Now showing 1 - 5 of 5
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Item,
    Optimized CNN-based channel estimation for zero-padded uplink OFDMA in 5G new radio over fast-fading channels
    (2026-07-01)
    Mata, Tanairat
    ;
    Boonsrimuang, Pisit
    This paper addresses a pilot-assisted channel estimation applicable to the uplink orthogonal frequency-division multiple-access with zero-padding in a 5G new radio. The adjacent uplink subchannels in the frequency domain are allocated separately for each user, and each subchannel assigns the pilot signal independently. This paper proposes a convolutional neural network-based channel estimation, including one-dimensional and two-dimensional architectures, designed to optimize the handling of rapid fading channel variations encountered in high-mobility scenarios. The estimation process leverages the subchannels of each user to enhance accuracy. Simulation results demonstrate the effectiveness of the proposed method in offering a better bit-error rate and a higher transmission data rate than the conventional channel estimation methods under challenging conditions. Finally, this paper discusses the considerable computational complexity of aspects of the lightweight two convolutional neural network architectures.
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Item,
    5G Channel Coding Tool: Learning and Performance Evaluation
    (2023-01-01)
    Mueadkhunthod, Krittiyaporn
    ;
    Wongsa, Anusorn
    ;
    Srisupha, Thanat
    ;
    Duangthong, Chatuporn
    ;
    Puntsri, Kidsanapong
    The 5G channel coding tool is presented to explain channel coding in 5G New Radio (NR). Our tool consists of six modules such as information generator, channel encoder, modulator, noise generator, demodulator, and channel decoder. The channel encoder and modulator are developed according to 3GPP TS 38.212 and 3GPP TS 38.211 technical specifications, respectively. The 5G channel coding tool provides a graphical user interface (GUI) in which users can study the block diagrams of downlink and uplink process. In addition, our 5G channel coding tool can be used to evaluate the bit error rate performance of 5G channel coding in additive white Gaussian noise (AWGN) and fading channels.
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Item,
    Development of 5G Polar Experimental Kit
    (2022-01-01)
    Wongsa, Anusorn
    ;
    Mueadkhunthod, Krittiyaporn
    ;
    Phakphisut, Watid
    ;
    Duangthong, Chatuporn
    ;
    Puntsri, Kidsanapong
    The 5G polar experimental kit is presented for learning polar codes in 5G new radio. The experimental kit is developed to demonstrate the eleven encoding processes of polar codes described in 3GPP TS 38.212 technical specification. The experimental kit provides a graphical user interface (GUI) which a user can provide any the input parameters defined in the 5G new radio. The experimental kit provides a software and a hardware for a 5G polar encoder. After the polar encoder in the software or the hardware are done, the encoding results will be displayed on the GUI along with their processes details.
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Item,
    Development of 5G LDPC Experimental Kit
    (2022-01-01)
    Srisupha, Thanat
    ;
    Mueadkhunthod, Krittiyaporn
    ;
    Phakphisut, Watid
    ;
    Khittiwitchayakul, Sirawit
    ;
    Puntsri, Kidsanapong
    In this work, we develop the 5G LDPC experimental kit to demonstrate the encoding processes of LDPC codes in 5G new radio. The experimental kit consists of a graphical user interface (GUI) and an FPGA development board. Any parameters defined in the 5G new radio can be configured and their encoding results are presented in the GUI. We also develop the 5G LDPC encoder as the software module integrated within the GUI. The user can select the software or hardware for the 5G LDPC encoder. The experimental kit is simple to use and no need any complicated setups. We believe that the experimental kit would be useful to anyone interested in the LDPC 5G NR standard.
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Item,
    Design of partition decoding for polar codes in 5G new radio
    (2020-10-08)
    Wongsa, Anusorn
    ;
    Phakphisut, Watid
    ;
    Min Myint, Lin Min
    ;
    Supnithi, Pornchai
    In this work, we consider partition decoding to diminish the required memory of polar codes in 5G new radio. We show that the suitable design of partition decoding for downlink and uplink control channels may differ. Moreover, the partitioning technique can reduce the computation complexity of polar decoder by limiting the number of codewords passed between partitions. We then propose to use the parity bits of interleaved CRC codes to select the codewords passed between partitions. The parity bits can help the partition decoding of which the codewords are verified. The simulation results show that the parity bits can improve the performance of partition decoding of polar codes in the downlink control channel of 5G new radio.