1. Chapter4 Transmitter and Receiver Applications AM and FM Radios
GSM and CDMA
TV Transmitters and Receivers
Direct Broadcast Satellite (DBS) TV
Huseyin Bilgekul
Eeng360 Communication Systems I
Department of Electrical and Electronic Engineering
Eastern Mediterranean University

2. Complete 88- to 108-MHz stereo receiver.

3. Complete 88- to 108-MHz stereo receiver.

4. The GSM and CDMA networks.
MSC = mobile switching center; BST = base transceiver station;
BSC = base station controller.

5. MTSO linking two mobile users.

6. GSM Mobile Phone
Transmitter
Receiver

7. Mobile Phone Transmitter
CDMA Cell Phone
Mobile Phone Transmitter

8. TV receiver block diagram.

9. VHF/UHF tuner block diagram.

10. Video section block diagram.

11. Composite color TV transmission.

12. Direct Broadcast Satellite (DBS) TV

13. Direct Broadcast Satellite (DBS) TV

14. DBS-TV footprint and rain regions
150o 120o o o o

15. DBS TV Uplink Transmitter
QPSK IF amplifier upconverter LPA HPA Multiplexer
modulator M
MUX
17 GHz
uplink
antenna ~ ~
Other RF
signals
70 MHz LO
RF LO
MPEG-2
encoder
Digital
multiplexer
Reed-Soloman
encoder
Convolutional
encoder
Interleaver
MPEG 2
R-S
Coder
Conv
Coder
ADC
MUX I
Analog video
and audio
signals
Other digital
signals

16. DBS TV Receiver 12.2 – 12.7 GHz DBS-TV signal Image rejection BPF
MHz
IF amplifier
LNA
Mixer
Low noise
block converter
mounted on
antenna feed
Coaxial cable
to set top
receiver
Local oscillator
11.3 GHz
Ku-band
antenna
MHz
IF amplifier
70 MHz
IF amplifier
QPSK
demod
Baseband
amplifier
Mixer D
Tuned BPF
input
Select
polarization
Tuned LO
Select
transponder
Frequency
synthesizer
Microprocessor
Video
Inner
decoder
Outer
decoder
MPEG-2
decoder DI
Demux
D/A
Audio
Analog output
to TV set
Deinterleaver

17. DBS TV Receiver Front End
LNA
Mixer
MHz
IF amplifier
Coaxial cable
to set top
receiver
Ku-band
antenna
Image rejection
BPF LO
11.3 GHz
LNB mounted
on antenna feed
Select
polarization

18. DBS TV Receiver IF Section
Coaxial cable from
antenna and LNB
Baseband
amplifier
MHz
IF amplifier
70 MHz
IF amplifier
QPSK
demod
Mixer D in
Tuned BPF F P
to select
transponder
Frequency
synthesizer
Tuned LO
Microprocessor

19. DBS TV Receiver Baseband Processing
Deinterleaver
bits CD DI
R-SD
Inner convolutional
decoder
Outer R-S
decoder
Video
DeMux
MPEG
D/A
Audio
Analog
outputs
Digital
demux
MPEG-2
decoder