chapter4 transmitter and receiver applications am and fm radios gsm and cdma

Eeng 360 1

Chapter4

Transmitter and Receiver Applications

AM and FM Radios

GSM and CDMA

TV Transmitters and Receivers

Direct Broadcast Satellite (DBS) TV

Huseyin BilgekulEeng360 Communication Systems I

Department of Electrical and Electronic Engineering Eastern Mediterranean University

Eeng 360 2

Complete 88- to 108-MHz stereo receiver.

Eeng 360 3

Complete 88- to 108-MHz stereo receiver.

Eeng 360 4

The GSM and CDMA networks.

MSC = mobile switching center; BST = base transceiver station;

BSC = base station controller.

Eeng 360 5

MTSO linking two mobile users.

Eeng 360 6

GSM Mobile Phone

Transmitter

Receiver

Eeng 360 7

CDMA Cell Phone

Mobile Phone Transmitter

Eeng 360 8

TV receiver block diagram.

Eeng 360 9

VHF/UHF tuner block diagram.

Eeng 360 10

Video section block diagram.

Eeng 360 11

Composite color TV transmission.

Eeng 360 12

Direct Broadcast Satellite (DBS) TV

Eeng 360 13

Direct Broadcast Satellite (DBS) TV

Eeng 360 14

- 4 dB

- 2 dB

- 6 dB

150o 120o 90o 60o 30o

- 4 dB

DBS-TV footprint and rain regions

Eeng 360 15

QPSK IF amplifier upconverter LPA HPA Multiplexermodulator

Analog videoand audio signals

ADCMPEG

2 MUX

MUX

~ ~

R-SCoder

ConvCoder

I

70 MHz LO RF LO

17 GHz uplink

antenna

InterleaverDigital

multiplexerConvolutional

encoderReed-Soloman

encoderMPEG-2encoder

Other digitalsignals

Other RFsignals

M

DBS TV Uplink Transmitter

Eeng 360 16

LNA Mixer900 - 1400 MHz

IF amplifier

Coaxial cable to set topreceiver

Tuned LO

Mixer

Ku-band antenna

12.2 – 12.7 GHzDBS-TV signal

Image rejectionBPF

Local oscillator11.3 GHz

Low noise block convertermounted onantenna feed

Tuned BPFSelecttransponder

900 - 1400 MHz IF amplifier

70 MHz IF amplifier

QPSKdemod

Frequencysynthesizer

Basebandamplifier

Analog outputto TV set

D

Video

Audio

Microprocessor

D/A

Selectpolarization

Innerdecoder

Deinterleaver

Outerdecoder

MPEG-2 decoder

input

DemuxDI

DBS TV Receiver

Eeng 360 17

LNA

Mixer

900 - 1400 MHz IF amplifier

Coaxial cable to set topreceiver

Ku-band antenna

Image rejectionBPF

LO11.3 GHz

LNB mounted on antenna feed

Selectpolarization

DBS TV Receiver Front End

Eeng 360 18

Coaxial cable fromantenna and LNB

Tuned LO

Mixer

Tuned BPFto selecttransponder

900 - 1400 MHz IF amplifier

70 MHz IF amplifier

QPSKdemod

Frequencysynthesizer

Basebandamplifier

D

PF

Microprocessor

in

DBS TV Receiver IF Section

Eeng 360 19

CD DI R-SD

DeMux MPEG

Inner convolutionaldecoder

Deinterleaver

Outer R-Sdecoder

Digitaldemux

MPEG-2 decoder

D/AAudio

Video

bits

Analogoutputs

DBS TV Receiver Baseband Processing