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Polar Coding For Forward Error Correction In Space Communications With LDPC ComparisonsWith the surging development of optical telecommunicationsfor space applications, the importance of errorcorrection has become more apparent than ever. Specifically,the exploration of forward error correction code (FEC) methodologieswill be instrumental in developing the standards foroptical communications in space. Despite the widespread useof low-density parity-check (LDPC) codes, alternate FEC codessuch as polar codes have shown immense promise in assistingspace communications error correction with their ability tobypass the error floors that plague LDPC codes. Extremelypromising techniques including cyclic redundancy checks (CRC),successive cancellation (SC), and successive cancellation lists(SCL) that assist polar coding in achieving the Shannon limitin a timely manner are evaluated. MATLAB simulations areconducted with AWGN and burst noise to test each technique'sability to handle noise typically encountered in space and eachtechnique's ability to correct unexpected errors. Results ofsimulations for different rates and message lengths are alsoreported to determine each technique's ability to handle largedata volumes and fix errors. Similar simulations are conductedfor LDPC codes with additional tests for convolutional and nointerleavers. Finally, a discussion regarding the future ability ofpolar codes to satisfy current missions in the place of, or inconjunction with, LDPC codes along with the merits of eachFEC technique's ability to process data efficiently and handledata while maintaining adequate performance will be provided.Preliminary recommendations will be made for each technique'seffectiveness for GEO related missions along with discussionsregarding each technique's ability to fit within the CCSDS standards for optical communications.
Document ID
20190032244
Document Type
Conference Paper
Authors
Naimipour, Naveed (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Safavi, Haleh (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Shaw, Harry C. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
October 24, 2019
Publication Date
October 21, 2019
Subject Category
Space Communications, Spacecraft Communications, Command and Tracking
Report/Patent Number
GSFC-E-DAA-TN74073
Meeting Information
International Astronautical Congress 2019(Washington, D.C.)
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
Polar Coding

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