Digital Signal Processing Reference
In-Depth Information
Exercise 8
Summarize the three "lessons" of SHANNON's information theory.
Exercise 9
PCM 30 system uses the time multiplex process TDMA. 30 subscribers can use the same
transmission channel. How large is the bit rate of the PCM 30 system with an NF band-
width of 4 kHz and using 8 bit A/D converters?
Exercise 10
(a)
DMT processes are at present at the forefront of modern digital transmission
technology.
(b)
What advantages are expected from DMT in spite of its complex structure?
(c)
What transmission media seem particularly suitable for DMT processes? Give
reasons.
(d)
What is the special feature of OFDM
(e)
By means of what digital signal processes can effort be reduced considerably?
(f)
To what extent is a DMT system virtual, i.e. a program?
(g)
What "standard chips" are required above all for digital signal processing DSP?
(h)
What applications work on the basis of DMT?
Exercise 11
Describe the structure of an OFDM transmitter and receiver
Exercise 12
What is behind the frequency band spread and CDMA?
