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Maheshwari, Abhishek. Hard decision message passing for systematic vs non-systematic nonbinary low-density parity-check codes with experimental results. Master's Degree(Information and Communication Technology for Embedded System). Kasetsart University. Office of the University Library. : Kasetsart University, 2020.
Hard decision message passing for systematic vs non-systematic nonbinary low-density parity-check codes with experimental results
Name: Maheshwari, Abhishek
Classification :.LCCS: TK5102.96
LCSH:
Signal processing
-- Digital techniques
LCSH:
Information theory
Abstract:
Due to advancement in the transmission of large non-binary data wirelessly, we need a suitable coding technique. The Message Passing (MP) algorithm for Low-Density Parity Check (LDPC) codes and Vector Symbol Decoding (VSD) as verification based decoding technique are powerful decoding technique. Verification-based decoding allows for simple packet level encoding and decoding algorithms. LDPC codes have received increased attention over recent years and are already equipped with efficient soft-decision encoding and decoding. However, for large non-binary symbols, soft-decision decoding is too complex for practical use. A less complex decoding is a hard decision message passing (hMP) algorithm. The concatenation of hMP and VSD, called hMP-VSD algorithm, reduces the complexity for LDPC codes with large non-binary symbols. Systematic LDPC codes are chosen for practical purpose. They are generated by performing row operation on the randomly generated non-systematic LDPC codes. Results show that systematic codes can perform better than the non-systematic codes with large error symbols and the effects of weight on the performance of decoding algorithm. hMP-VSD algorithm can be used with low cost computer architecture shown by experimental results. The transmission of systematic LDPC codes with large symbol size under different channel conditions has been done by using the Message Queuing Telemetry Transport (MQTT). hMP-VSD is used as the decoder which decodes and corrects the errors detected in the transmitted data. Image data is used for encoding, transmitting and decoding. Both encoder and decoder are implemented on the Raspberry pi (R-pi) board and the transmission is done by using the Wi-Fi module. Encoded and Decoded images are shown to easily visualize the results.
Kasetsart University. Office of the University Library
Address:
Bangkok
Email:
tdckulib@ku.ac.th
Name: Usana Tuntoolavest
Role:
Thesis Advisor
Name: Kazuhiko Fukawa
Role:
Thesis CO-Advisor
Created:
2020
Modified:
2025-07-09
Issued:
2025-07-09
วิทยานิพนธ์/Thesis
application/pdf
URL: https://www.lib.ku.ac.th/KUthesis/2563/abhishek-mah-all.pdf
CallNumber:
TK5102.96 .M34
eng
DegreeName: Master of Engineering
Level: Master's Degree
Grantor: Kasetsart University
©copyrights Kasetsart University
RightsAccess:
ใช้เวลา
0.035939 วินาที
Maheshwari, Abhishek
| Title | Contributor | Type |
|---|---|---|
| Hard decision message passing for systematic vs non-systematic nonbinary low-density parity-check codes with experimental results
มหาวิทยาลัยเกษตรศาสตร์ Maheshwari, Abhishek | Usana Tuntoolavest | วิทยานิพนธ์/Thesis |
Usana Tuntoolavest
| Title | Creator | Type and Date Create |
|---|---|---|
| Transmit beamforming for multiantenna channels with limited feedback
มหาวิทยาลัยเกษตรศาสตร์ Wiroonsak Santipach ;Usana Tuntoolavest ;Wachira Chongburee | Kritsada Mamat | วิทยานิพนธ์/Thesis |
| Enhanced bluetooth indoor positioning system with angle of arrival and channel coding
มหาวิทยาลัยเกษตรศาสตร์ Usana Tuntoolavest;La-Or Kovavisaruch;Kazuhiko Fukawa | Pawarit Manakul. | วิทยานิพนธ์/Thesis |
| Hard decision message passing for systematic vs non-systematic nonbinary low-density parity-check codes with experimental results
มหาวิทยาลัยเกษตรศาสตร์ Usana Tuntoolavest | Maheshwari, Abhishek | วิทยานิพนธ์/Thesis |
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| Simple prediction model for diurnal rain attenuation statistics on earth-space links
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