Wavecom W-BitView V2.5.00 - Manual (Page 99)

BitView Manual V2.5.00 WAVECOM W-BV Glossary of Terms
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Glossary of Terms
ANSI
An acronym for the American National Standards Institute, an organization that sets standards for a
variety of programming languages and systems.
ASCII
An acronym for American Standard Code for Information Interchange, pronounced "ASK-ee." It is a code
in which the numbers from 0 to 127 stand for letters, numbers, punctuation marks and other characters.
ASCII code is standardized to facilitate transmitting text between computers or between a computer and a
peripheral device.
BCH
A BCH (Bose, Ray-Chaudhuri, Hocquenghem) code is an error-correcting code. It is a multilevel, cyclic,
error-correcting, variable-length digital code used to correct mutiple random error patterns.
Convolutional code
A type of channel coding that adds patterns of redundancy to the data in order to improve the signal-to-
noise ratio (SNR) for more accurate decoding at the receiving end. The Viterbi algorithm is used to decode
a particular type of convolutional code
CRC
CRC (Cyclical Redundancy Checking) is an error checking technique used to ensure the accuracy of
transmitting digital data. The transmitted messages are divided into predetermined lengths which, used as
dividends, are divided by a fixed divisor. The remainder of the calculation is appended onto and sent with
the message. At the receiving end, the computer recalculates the remainder. If it does not match the
transmitted remainder, an error is detected.
DEFLATE
Deflate is a lossless data compression algorithm that uses a combination of the LZ77 algorithm and
Huffman coding.
HDLC
HDLC (High-level Data Link Control) is a group of protocols for transmitting synchronous data packets
between point-to-point nodes. In HDLC, data is organized into a frame. HDLC uses zero insertion/deletion
process (bit stuffing) to ensure that the bit pattern of the delimiter flag does not occur in the fields
between flags.
HEX
In mathematics and computer science, hexadecimal, or simply hex, is a numeral system with a radix or
base of 16 usually written using the symbols 0–9 and A–F or a–f.