Our coding solution » History » Version 4
ABDALLAH, Hussein, 03/23/2016 03:09 PM
| 1 | 1 | ABDALLAH, Hussein | h1. Our coding solution |
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| 3 | 1 | ABDALLAH, Hussein | *Cascade coding simulation* |
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| 5 | 1 | ABDALLAH, Hussein | In this section, we will simulate cascade coding: convolution coding plus RS coding, the communication chain is shown as following: |
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| 7 | 1 | ABDALLAH, Hussein | !Communication_chain_cascade.jpg! |
| 8 | 1 | ABDALLAH, Hussein | Block diagram of cascade encode and decode |
| 9 | 2 | ABDALLAH, Hussein | |
| 10 | 2 | ABDALLAH, Hussein | The cascade coding above insert a interleave module in order to improve the coding gain for burst errors. The convolution encoding rate is 2/3, and punched from CC(2,1,7;133,171). The convolution decoding uses soft decoding, so the total code rate is 0.614. |
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| 12 | 2 | ABDALLAH, Hussein | We just use the same simulate block diagram but change the encoding and decoding module as the figure above shows. Then we get the BER data: |
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| 14 | 2 | ABDALLAH, Hussein | BER results of BPSK simulation with cascade coding |
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| 16 | 3 | ABDALLAH, Hussein | !BPSK_simulation_cascade_Results.jpg! |
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| 18 | 4 | ABDALLAH, Hussein | !BER_all_coding_schemes.jpg! |
| 19 | 4 | ABDALLAH, Hussein | BER simulation of 3 types of coding |