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=3] ===================== - 1010111 : ? --------------------- A 0000000 : 5 B 0000111 : 2 C 0011001 : 4 D 0011110 : 3 E 0101010 : 6 F 0101101 : 5 G 0110011 : 3 H 0110100 : 4 I 1001011 : 3 J 1001100 : 4 K 1010010 : 2 L 1010101 : 1 M 1100001 : 4 N 1100110 : 3 O 1111000 : 5 P 1111111 : 2 ===================== TOTAL 16 CODEWORDS |
RECEIVED WORD | Error Detected | Error Corrected | Result |
1010111 | YES | YES | Corrected to 1010101 |
The received codeword does not match a valid codeword, so it appears that an error occurred during transmission. The closest valid codeword (L) shown in red is 1 bit different from the word which was received. It is assumed that the codeword 1010101 was actually transmitted and that 1 bit error led to the received codeword 1010111.
2024-04-25 21:00:14 ADT
Last Updated: 09-09-12 |
Richard Tervo [ tervo@unb.ca ] | Back to the course homepage... |