Crc & polynomial, Crc (1 ) – Wavecom W-BitView V2.5.00 User Manual

Page 48

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42

Function Library

BitView Manual V2.5.00 WAVECOM W-BV

Parameter

Description

Value

Length of data

(k)

Number of data symbols in a code word, where the number of data

bits (k) is less than the total number of bits (k), i.e., k < n

Number of parity

symbols

Number of parity symbols in a code word (n-k)

Output with Pari-

ty Symbols

Specifies if parity symbols should be included in the output

Yes, No

Position of Parity

Symbols

Specifies if parity symbols are leading or trailing the code word

End of code word,

Beginning of code

word

Primitive poly-

nomial

Encoding polynomial

Select from drop-

down list

Root for genera-

tor polynomial

Root for generator polynomial. See parameter help desk for further

explanation

The results of the analysis are displayed in the Calculation category in the Properties window. The table
below lists the calculated parameters.

Parameter

Description

Frames with corrected errors

Number of frames with correctable errors

Frames with decoding failures

Number of frames with decoding errors

Frames without errors

Number of frames without errors

m (bits per symbol)

Number of bits per symbol (m)

n (max. length of code word)

Maximum number of symbols per code word. N is derived from the selected

primitive polynomial

Number of decoded frames

Number of decoded frames

CRC & Polynomial

CRC (1..32)

In: Bit stream
Out: Bit stream

Function:
Calculate the cyclic redundancy checksum (CRC) value of the input bit stream according to the settings
described below.

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