Chapter4 Transmitter and Receiver Applications AM and FM Radios

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Presentation transcript:

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

Complete 88- to 108-MHz stereo receiver.

Complete 88- to 108-MHz stereo receiver.

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

MTSO linking two mobile users.

GSM Mobile Phone Transmitter Receiver

Mobile Phone Transmitter CDMA Cell Phone Mobile Phone Transmitter

TV receiver block diagram.

VHF/UHF tuner block diagram.

Video section block diagram.

Composite color TV transmission.

Direct Broadcast Satellite (DBS) TV

Direct Broadcast Satellite (DBS) TV

DBS-TV footprint and rain regions 150o 120o 90o 60o 30o

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

DBS TV Receiver 12.2 – 12.7 GHz DBS-TV signal Image rejection BPF 900 - 1400 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 900 - 1400 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

DBS TV Receiver Front End LNA Mixer 900 - 1400 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

DBS TV Receiver IF Section Coaxial cable from antenna and LNB Baseband amplifier 900 - 1400 MHz IF amplifier 70 MHz IF amplifier QPSK demod Mixer D in Tuned BPF F P to select transponder Frequency synthesizer Tuned LO Microprocessor

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