130x1g2 - CCSDS

TM SYNCHRONIZATION AND CHANNEL CODING—SUMMARY OF CONCEPT AND RATIONALEFigures 6-10 and 6-11 show BER and WER curves for the concatenated codes consisting ofthe non-shortened (255,223) RS code with E = 16 concatenated with any of the recommendedpunctured or non-punctured (7, 1/2) convolutional codes, with interleaving depth I = 5 (whichgives a close approximation to ideal performance on the AWGN channel).10 010 -110 -2CC(7,1/2)BIT ERROR RATE10 -310 -410 -510 -6CC(7,2/3)CC(7,3/4)CC(7,5/6)CC(7,7/8)10 -710 -8Interleaving depth I=50 1 2 3 4 5E b/N 0(dB)Figure 6-10: Bit Error Rate Simulated Performance of the CCSDS ConcatenatedScheme with Outer E=16 Reed-Solomon Code (255,223) and InnerPunctured Convolutional Codes, Using Finite Interleaving with I=5CCSDS 130.1-G-2 Page 6-10 November 2012