130x1g2 - CCSDS

TM SYNCHRONIZATION AND CHANNEL CODING—SUMMARY OF CONCEPT AND RATIONALECONTENTSSectionPage1 DOCUMENT PURPOSE, SCOPE, AND ORGANIZATION ................................... 1-11.1 PURPOSE ............................................................................................................... 1-11.2 SCOPE .................................................................................................................... 1-11.3 ORGANIZATION .................................................................................................. 1-11.4 REFERENCES ....................................................................................................... 1-22 OVERVIEW OF CCSDS TELEMETRY SYSTEM .................................................. 2-12.1 INTRODUCTION .................................................................................................. 2-12.2 TELEMETRY SYSTEM CONCEPT ..................................................................... 2-33 TM SYNCHRONIZATION AND CHANNEL CODING .......................................... 3-13.1 INTRODUCTION .................................................................................................. 3-13.2 RECOMMENDED CODES ................................................................................... 3-23.3 CHANNEL CODING PERFORMANCE .............................................................. 3-34 CONVOLUTIONAL CODES ....................................................................................... 4-14.1 INTRODUCTION .................................................................................................. 4-14.2 ENCODER FOR THE (7,1/2) RECOMMENDED CODE .................................... 4-14.3 ENCODER FOR THE RECOMMENDED PUNCTUREDCONVOLUTIONAL CODES ................................................................................ 4-34.4 SOFT MAXIMUM LIKELIHOOD DECODING OFCONVOLUTIONAL CODES ................................................................................ 4-44.5 PERFORMANCE OF THE RECOMMENDED (7,1/2)CONVOLUTIONAL CODE .................................................................................. 4-74.6 PERFORMANCE OF THE RECOMMENDED PUNCTUREDCONVOLUTIONAL CODES .............................................................................. 4-104.7 EFFECT OF THE TRUNCATION LENGTH ON PERFORMANCE ................ 4-115 REED-SOLOMON CODE ............................................................................................ 5-15.1 INTRODUCTION .................................................................................................. 5-15.2 ENCODER .............................................................................................................. 5-25.3 INTERLEAVING OF THE REED-SOLOMON SYMBOLS ................................ 5-45.4 HARD ALGEBRAIC DECODING OF REED-SOLOMON CODES ................... 5-55.5 PERFORMANCE OF THE RECOMMENDED REED-SOLOMON CODES ..... 5-6CCSDS 130.1-G-2 Page v November 2012