ECE4253 Digital Communications | |
Department of Electrical and Computer Engineering - University of New Brunswick, Fredericton, NB, Canada | |
This online tool generates sets of codewords having certain properties. Given a received codeword, the word can be submitted for error detection or correction in comparison to the generated set of valid codewords.
A brute force search is used here to demonstrate codeword sets having minimum distance properties. For a more structured approach to codeword generation, the Online BCH Code Generator may be appropriate.
7-bit CODEWORDS [D=4] ===================== - 0000001 : ? --------------------- A 0000000 : 1 B 0001111 : 3 C 0110011 : 3 D 0111100 : 5 E 1010101 : 3 F 1011010 : 5 G 1100110 : 5 H 1101001 : 3 ===================== TOTAL 8 CODEWORDS |
RECEIVED WORD | Error Detected | Error Corrected | Result |
0000001 | YES | YES | Corrected to 0000000 |
The received codeword does not match a valid codeword, so it appears that an error occurred during transmission. The closest valid codeword (A) shown in red is 1 bit different from the word which was received. It is assumed that the codeword 0000000 was actually transmitted and that 1 bit error led to the received codeword 0000001.
2024-03-29 11:41:56 ADT
Last Updated: 09-09-12 |
Richard Tervo [ tervo@unb.ca ] | Back to the course homepage... |