Alle afkortingen over het vak Datacommunicatie, industrieel ingenieur (informatica en elektronica-ict), universiteit gent.
Eerste 3 blz zijn per hoofdstuk, laatste 3 blz zijn dezelfde afkortingen maar alfabetisch gerangschikt.
Het is een openboekexamen, dus deze lijst is onmisbaar op het exam...
Afkorting Betekenis blz. Meer blz. Extra uitleg
algemeen/ AM amplitude modulation
of FM frequency modulation
onbekend DAB digital audio broadcasting
bit binary unit
IEEE Institute of Electrical and Electronics Engineers
CSP carrier select prefix
CTS Clear to send
DCD Carrier data detect
DSR data set ready
ES echo supression
GSM Global System for Mobile communications
NT Network termination
RI ring indicator
RTR ready to receive
RTS request to send
SDSL [europese naam voor SHDSL]
Telex Teletyping Exchange
UHF ultra high frequency
VHF very high frequency
NIR Near Infrared
h1
ISO International Standards organisation 11
OSI Open system interconnect, -referentiemodel (7 lagen) 12
TCP/IP Transmission control protocol / internet protocol 14
h2
ITU International Telecommunication Union 26
VoIP Voice over IP 26
PAM Puls Amplitude Modulatie, na bemonstering 27
PCM Puls Code Modulatie, na kwantisatie, digitale voorstelling analoog signaal 27
DM Deltamodulatie 27
DPCM differentiële pulscodemodulatie 27
ADPCM Adaptieve differentiële pulscodemodulatie 27
h3
SNR Signal to Noise Ratio = SignaalTotRuis-verhouding 31 127 10 * log10 (Px/Pn) Bv. 30dB: Px/Pn=10^3
dB decibels 31
NF Noise Figure 32 uitgangsruisvermogens-ρ/deel door thermische ruis
PSTN Public Switched Telephone Network 37
h4
EM Elektromagnetisme 42
AWG American Wire Gauge (bv, type 24), een type koperdraad denk ik 45
UTP Unshielded Twisted Pair (niet elektromagnetisch afgeschermd) 47
FTP Foiled Twisted Pair, is UTP maar omringd door folie of shield 47
STP Shielded Twisted Pair, afscherming per aderpaar 47
RJ Registered Jack, bv. type 11 47
RGxxx type coaxkabel [Radio Guide] 50
h5
NRZ Nonreturn-to-Zero (unipolar/bipolar) 65
RZ return to zeoro (unipolar/bipolar) 65
AMI (RZ) Alternate Mark Inversion RZ 65
ASK Amplitude shift keying 69
PSK Phase shift keying 72
OOK on off keying 68
FSK Frequency shift keying 71
BFSK binary frequency shift keying 71
MFSK multiple frequency shift keying 71
GFSK gaussian frequency shift keying 72
MSK minimum shift keying (speciaal geval van FSK) 72
GMSK Gaussian minimum shift keying 72 117
BPSK binary phase shift keying 72
DPSK differential phase shift keying 73
QPSK quadrature phase shift keying (op rotatie na gelijk aan 4-PSK) 73
QAM quadrature amplitude modulation 73
h6
MA multiple access 76
FDM Frequency division multiplexing 76
FDMA frequency division multiple access 76
FDD frequency division duplexing 76
WDM wavelength division multiplexing 78 165
WDMA wavelength division multiple access 78
CWDM Coarse (/cheap) WDM 78
DWDM Dense WDM 78
TDM time division multiplexing 78 109 gebruikt bij ISDN
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