Reed-solomon

Reed-solomon code online

Reed-solomon code online
  1. How many bits can Reed-Solomon correct?
  2. How does Reed-Solomon code work in QR code?
  3. What is RS encoding?

How many bits can Reed-Solomon correct?

The standard (255, 223) Reed-Solomon code is capable of correcting up to 16 Reed-Solomon symbol errors in each codeword. Since each symbol is actually eight bits, this means that the code can correct up to 16 short bursts of error due to the inner convolutional decoder.

How does Reed-Solomon code work in QR code?

The Reed-Solomon method, used in QR codes, works in a similar way to the parity error correction used earlier in this chapter - it adds extra bits to the data so that errors can be corrected. However, the Reed-Solomon code is able to deal with a lot more errors in the data than the parity method can.

What is RS encoding?

RS encoding consists of the generation of check symbols from the original data. The process is based upon finite field arithmetic. The variables to generate a particular RS code include field polynomial and generator polynomial starting roots.

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