The document discusses channelization schemes in AMPS and GSM mobile communication systems. It describes how AMPS uses 30 kHz channels, with 832 duplex channels for voice and 21 for call setup. It also explains that AMPS uses voice channels for modulated voice signals and control channels for signaling using FSK. For GSM, it outlines the 25 MHz bandwidth and channel spacing, and describes its four subsystems: the mobile station, base station, network & switching, and operation subsystems.

1. CHANNELIZATION SCHEME IN:
AMPS & GSM
Subject:-OverView Of Mobile communication
GAURAV BISWAS
BIT MESRA
09-04-20191

2.  AMPS
 CHANNELIZATION SCHEME IN AMPS
 PARAMETERS OF AMPS SYSTEM
 GSM SYSTEM ARCHITECTURE & VARIOUS SUB SYSTEMS
AND
 CHANNELIZATION SCHEME IN GSM 900
CONTENT
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3. AMPS(ADVANCE MOILE PHONE SYSTEM) -:
 AMPS facts-
 AT & T Bell labs developed AMPS as the 1st mobile communication
system
 It is based on analog modulation
 channel bandwidth 30 kHz. The band can accommodate 832
duplex channels, among which 21 are reserved for call setup, and
the rest for voice communication.
 Frequency allocated by FCC on 824-849 MHz for downlink and 869-
894 MHz for uplink traffic.
 Available in U.S., Canada, Hong Kong, New Zealand, Thailand
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INTRODUCTION

4. Figure:- channelization scheme in amps[1]
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CHANNELIZATION SCHEME IN AMPS

5.  AMPS used two kinds of channels:
 Voice channel
 Control channel
 Voice channel :-are used to transmit voice signal using frequency
modulation
 Control channel :-are used for signaling information & are transmitted using
FSK(frequency shift key)
 Various channel used in AMPS system :
 FCC(forward control channel)
 RCC(reverse control channel)
 FVC(forward voice channel)
 RVC(reverse voice channel
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CHANNELIZATION SCHEME IN AMPS

6. Table-Typical AMPS Parameter[1]
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PARAMETERS OF AMPS

7. 
Figure:-The GSM system architecture[1]
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GSM SYSTEM ARCHITECTURE

8.  GSM comprises of four subsystems :-
 MSS(Mobile station subsystem)
 BSS(Base station subsystem)
 NSS(Network & switching subsystem)
 OSS(Operation subsystem)
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VARIOUS SUB SYSTEMS

9. Figure:- The channelization scheme in GSM[1]
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CHANNELIZATION SCHEME IN GSM 900

10.  In GSM 900 :-
 25 MHz bandwidth(in uplink as well as downlink)
 UL frequency band 890-915 MHz
 DL frequency band 935-960 MHz
 UL & DL frequency spacing 45 MHz
 Channel bandwidth 200 kHz
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CHANNELIZATION SCHEME IN GSM 900

11.  [1] Sanjay Kumar,” Wireless Communication”, River Publishers, 2015
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REFERENCES

12. THANK YOU
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