hamming_DetectorCorrector.vi

Summary: Build a LabVIEW subVI to implement the error detection and correction mechanism for the (n,k) Hamming linear block code channel decoder.

TABLE 1

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NOTE: 

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LabVIEW SubVI: hamming_DetectorCorrector.vi

• Description: Implement (n,k) Hamming linear block code error detection and correction using the "table lookup syndrome decoder" method. The syndrome calculated from a received stream of codewords is used as an index into the syndrome table to retrieve the most-likely error pattern, which subsequently is added (modulo-2 addition) to the received codeword to generate the corrected codeword output. Checkbits may optionally be removed from the output wordstream. Detected errors (single and double bit errors) are indicated separately.
• Category: Hamming (n,k) block code ("hamming" prefix)

Inputs (Controls)

1. uncorrected wordstream -- Boolean 2-D array
2. syndrome -- Boolean 2-D array
3. syndrome table -- Boolean 2-D array
4. remove checkbits (F) -- Boolean

Parentheses ( ) indicate default value; square brackets [ ] designate units.

Outputs (Indicators)

1. corrected wordstream -- Boolean 2-D array
2. error detected -- Boolean 1-D array

Required Behavior

Refer to the description above.

LabVIEW Coding Tips

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Refer to the Figure 1 screencast video for LabVIEW coding tips and techniques specific to this subVI.

Figure 1: [video] LabVIEW coding tips and techniques for hamming_DetectorCorrector.vi

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