This document discusses the history and development of information theory and communication systems. It provides a timeline of important developments in telegraph, telephone, radio, and data transmission technologies from 1830 to 1930. It also includes diagrams of a basic communication system model and equations for measuring information transmission rate and amount. The key contributors to early information theory are noted as Hartley, Nyquist, and Shannon through their seminal papers from the 1920s and 1940s.

1. Teori InformasiTeori Informasi
Ir. Sihar, M.T.
T. Informatika – Fak.Teknologi Informasi
Bandung - 2012

2. Daftar PustakaDaftar Pustaka
1) Hartley, R.V.L. "Transmission of Information".
Bell Labs Technical Journal. 1928.
2) Nyquist, H. "Certain Factors Affecting
Telegraph Speed". Bell Labs Technical Journal.
1924.
3) Shannon, C. E. "A Mathematical Theory of
Communication". Bell Labs Technical Journal.
1948.

3. Area dan domainArea dan domain
Telegraph (th.1830)
Telephone (th.1870)
Wireless telegraph (th.1890)
AM radio (th.1900)
Single-Sideband-Modulation (1920)
Television (th. 1930)
Teletype (th.1930)
Frequency Modulation (th.1930)
PCM (th.1930)
Vocoder (th.1930)
Spread-spectrum (th.1930)

4. Skema sistem komunikasi
Information
source
transmitter
message signal
noise source
receiver
destination
message
received signal
Noise berasal dari lingkungan luar yang bersama-sama dengan sinyal data
W= K log m
W: speed of transmission data was transmitted
K: Konstanta
m: number of curret value was transmitted

5. W= K log m
H: the amount of information a was transmitted
S: number of possible symbols
n: number of symbols in transmission
H= log S
n
12KB transmitted
digital
discrete H
S n
S
n
H

6. W= K log m
H: the amount of information a was transmitted
S: number of possible symbols
n: number of symbols in transmission
H= log S
n
12KB transmitted
digital
discrete H
S n
S
n
H
T RF(t)f
1
(t) f
2
(t)

7. Dalam Matematika Informasi menggunakan Shannon-Approach sbb:
Engineering Mathematical
Logic &
Abstract
Science

8. X + Y = Y + X
X.Y = Y.X
X + (Y + Z) = (X + Y) +
Z
X(Y.Z) = (X.Y)Z
X(Y + Z) = X.Y + X.Z
X + Y.Z = (X+Y)(X+Z)
1*X = X
0*X = 0
1+X = 1
0+X = X
X + X’ = 1
X.X’ = 0
0’ = 1
1’ = 0
(X’)’ = X
circuit
terminal-A terminal-B
XAB
0 1
‘closed’
(zero-impedance)
‘opened’
(infinite-impedance)

9. Case and example:

10. Case and example: