if i change convolution encoder to 3/4 or 7/8 code rate can u tell BER shd improve wid comp to1/2 ?
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i have implemented MODEM which has Convolution encoder. when i change 1/2 to 3/4 or 7/8 . My BER for 3/4 or 7/8 comes out to be zero .....with AWGN as 1 db for Eb/No .is it right ?plese give ur suggestion
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sai charan sampara
2025 年 1 月 18 日 15:37
Hi Shailee,
In general when the code rate is increased from 1/2 to 3/4 or 7/8, the BER is reduced due to increased redundancy in the data.Higher code rates give better error correction capability but the overall throughput is reduced. 1dB is a low snr value to check the correctness of the code.Testing over a range of Eb/No values can give a better idea.
Hope this helps!
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