# why did convolution coding achieve BER less than Reed-Solomon?

I tried convolutional coding and Reed-Solomon (RS) (block coding technique) for wireless channel where the input data is bitstream.

Convolutional coding achieved lower BER comparing with RS. If the SNR of channel decrease around 15dB, convolution code's BER becomes more than that of the system without channel coding, where RS achieved a small improvement in the BER.

I wonder if any one has an explaination for what happened ?

• It could be easier if you post the BER curves and describe your channel model (AWGN, Rayleigh block/fast fading, ...). – AlexTP Dec 23 '17 at 16:42
• channel model is AWGN – user24907 Dec 23 '17 at 17:58
• One code is better than the other at achieving a better Ber. What's your question? – Marcus Müller Dec 23 '17 at 21:28
• Complexity is part of the performance trade space – Stanley Pawlukiewicz Dec 24 '17 at 0:57