Teleman Certified Wireless Maintance
Professional

Differences of Technologies
Presented by,

Guided by,

Krishna c. Giram...
CONTENT
•
•
•
•
•
•
•
•

PSTN AND GSM
GPRS AND GSM
EDGE AND GPRS
1G AND 2G
2G AND 3G
4G AND 3G
CDMA AND GSM
CDMA AND WCDMA
PSTN AND GSM
PSTN
(Public Switched Telephone Network)

GSM
(Global system for Mobile communication)

1] Pstn is basically ...
PSTN AND GSM
PSTN
(Public Switched Telephone Network)

GSM
(Global system for Mobile communication)

6] Quality of service...
GPRS AND GSM
GPRS AND GSM
EDGE AND GPRS
EDGE (2.75G)

GPRS(2.5G)

(Enhanced Data For Global Evolution)

(General Packet Radio Service)

1] Higher da...
EDGE AND GPRS
6] In EDGE re-segmentation is
possible.

6] In GPRS re-segmentation is not
possible.

7] In EDGE interleavin...
1G AND 2G
1G

2G

1] 1G is basically developed on
ANALOG system.

1] 2G is basically developed on DIGITAL
system.

2] In 1...
1G AND 2G
1G

2G

6] It was introduced in 1980’ s period.

6] It was introduced in 1991’ s period.

7] 1G not providing Ro...
2G AND 3G
2G

3G

1] 2G is works on TDMA , FDMA
technique.

1] 3G is works on TDMA , FDMA as well
as CDMA technique.

2] I...
2G AND 3G
2G

3G

6] Less flexible and non spectrum
efficient network .

6] More flexible and spectrum efficient
network.
...
4G AND 3G
4G

3G

1] Higher data rate than 3G i.e. 15Mbps100Mbps,more faster than 3G .

1] Lower data rate than 4G i.e. 2-...
4G AND 3G
4G

3G

6] In 4G improved spectral efficiency,
Quos, broadcast and cellular network.

6] In 3G less improved spe...
CDMA AND GSM
CDMA
(Code Division Multiple Access)

GSM
(Global system for Mobile communication)

1] CDMA basically works o...
CDMA AND GSM
CDMA
(Code Division Multiple Access)

GSM
(Global system for Mobile communication)

6] In CDMA in case of han...
WCDMA AND CDMA
WCDMA

CDMA2000

1] WCDMA has bandwidth is 5Mhz.

1] CDMA2000 has bandwidth is
1.25Mhz

2] WCDMA works on B...
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Differences of technologies

  1. 1. Teleman Certified Wireless Maintance Professional Differences of Technologies Presented by, Guided by, Krishna c. Giram Sapna Sahu
  2. 2. CONTENT • • • • • • • • PSTN AND GSM GPRS AND GSM EDGE AND GPRS 1G AND 2G 2G AND 3G 4G AND 3G CDMA AND GSM CDMA AND WCDMA
  3. 3. PSTN AND GSM PSTN (Public Switched Telephone Network) GSM (Global system for Mobile communication) 1] Pstn is basically wire line system. 1] GSM is basically wire less system. 2] Due to wire line system it requires installation cost. 2] Due to wire less system it does not requires installation cost. 3] It does not provide mobility and flexibility . 3] It provide better mobility and flexibility than PSTN. 4] It is works on only default route . 4] It can be use different route for each transmission as possible. 5] It not used for long distances . 5] It is used for long distances .
  4. 4. PSTN AND GSM PSTN (Public Switched Telephone Network) GSM (Global system for Mobile communication) 6] Quality of service well defined. 6] Quality of service not well defined. 7] It is developed only for voice not for data, easy to secure. 7] It is developed for voice as well as data, less secure than PSTN. 8] Example : ATM, PCM, Frame relay. 8] Example : TCP –IP,
  5. 5. GPRS AND GSM
  6. 6. GPRS AND GSM
  7. 7. EDGE AND GPRS EDGE (2.75G) GPRS(2.5G) (Enhanced Data For Global Evolution) (General Packet Radio Service) 1] Higher data rate i.e. 384 kbps in EDGE. 1] Lower data rate than EDGE i.e. 115 kbps in GPRS. 2] In EDGE 8-PSK /GMSK technique is 2] In GPRS GMSK technique is used. used. 3] EDGE works on Packet and Circuit switching . 3] GPRS works on only packet switching. 4] Modulation bit rate is 810 kb/s i.e.3 times the GPRS 4] Modulation bit rate is 270 kb/s 5] Addressing number having size of 2048 bit and window size is 1 to 1024. 5] Addressing number having size of 64 bit and window size is 1 to 128.
  8. 8. EDGE AND GPRS 6] In EDGE re-segmentation is possible. 6] In GPRS re-segmentation is not possible. 7] In EDGE interleaving is done only for affected burst. 7] In GPRS interleaving is done for all burst. 8] Ms and BSS is modified. 8] Ms and BSS is not modified
  9. 9. 1G AND 2G 1G 2G 1] 1G is basically developed on ANALOG system. 1] 2G is basically developed on DIGITAL system. 2] In 1G only voice and text message transmission is possible. 2] In 2G voice , text message and data transmission is possible. 3] 1G provides poor security. 3] 2G provides better security than 1G. 4] 1G works only FDMA technique. 4] 2G works on TDMA and FDMA technique. 5] 1G has slow data rate i.e.1.9kbps . 5] 2G has High data rate than 1G i.e.13kbps.
  10. 10. 1G AND 2G 1G 2G 6] It was introduced in 1980’ s period. 6] It was introduced in 1991’ s period. 7] 1G not providing Roaming and Handover operations. 7] 2G providing Roaming and Handover operations. 8] In 1G no BSS AND MSC system available. 8] In 2G BSS AND MSC systems are available.
  11. 11. 2G AND 3G 2G 3G 1] 2G is works on TDMA , FDMA technique. 1] 3G is works on TDMA , FDMA as well as CDMA technique. 2] It has low frequency spacing than 3G i.e. 0.2Mhz.(narrow B.W) 2] It has high frequency spacing than 2G i.e. 5Mhz. (Wide B.W) 3] It has low data rate than 3G i.e.13kbps to56kbps. 3] It has high data rate than 2G i.e.2Mbps. 4] It is used for voice, data only. 4] It is used for voice, data video call. 5] It provides regional roaming and limited service delivery. 5] It provides global roaming and global service delivery.
  12. 12. 2G AND 3G 2G 3G 6] Less flexible and non spectrum efficient network . 6] More flexible and spectrum efficient network. 7] It is used with wireless only. 7] It is used with wireless /wireline connection. 8] Example :GSM ,IS-136, etc. 8] Example :UMTS,IMT-2000, etc.
  13. 13. 4G AND 3G 4G 3G 1] Higher data rate than 3G i.e. 15Mbps100Mbps,more faster than 3G . 1] Lower data rate than 4G i.e. 2-7.5 Mbps, less faster than 4G . 2] It’s network architecture is wide area cell based. 2] It’s network architecture is hybrid integration of wireless LAN(WiFi),Bluetooth, wide area . 3] Bandwidth assign to 4G is 5 – 20 MHz 3] Bandwidth assign to 3G is 100+ MHz 4] 4G works on OFDMA/MC-CDMA. 4] 3G works on TDMA (GSM),WCDMA/UMTS. 5] 4G based on fully IP and packet switching . 5] 3G based on circuit +packet switching.
  14. 14. 4G AND 3G 4G 3G 6] In 4G improved spectral efficiency, Quos, broadcast and cellular network. 6] In 3G less improved spectral efficiency, Quos, broadcast and cellular network. 7] The equipment required to implement a next generation network is still very expensive. 7] The equipment required to implement a 3rd generation network is less expensive than 4G.
  15. 15. CDMA AND GSM CDMA (Code Division Multiple Access) GSM (Global system for Mobile communication) 1] CDMA basically works on Code multiplexing technique. 1] GSM basically works on Time and Frequency multiplexing technique. 2] CDMA having frequency space 1.25Mhz . 2] GSM having frequency space 200khz . 3] CDMA has improve coverage area up to 20km. 3] GSM has coverage area less than the CDMA i.e.3.5km. 4] CDMA has improved call quality with 4] GSM has poor call quality with better sound than GSM. better sound than CDMA. 5] CDMA is used for high population density area. 5] GSM is used for less population density area as compared to CDMA.
  16. 16. CDMA AND GSM CDMA (Code Division Multiple Access) GSM (Global system for Mobile communication) 6] In CDMA in case of handoff there will 6] In GSM in case of handoff there will be no call drop occur i.e. MBB. be call drop occur i.e. BBM. 7] Handset is network locked, need to buy a complete package from the service provider. 7] Freedom to choose handset from the market 8] More complex than GSM, Do not enjoy the freedom like GSM. 8] Less complex than GSM, More freedom than CDMA.
  17. 17. WCDMA AND CDMA WCDMA CDMA2000 1] WCDMA has bandwidth is 5Mhz. 1] CDMA2000 has bandwidth is 1.25Mhz 2] WCDMA works on BPSK data modulation. 2] CDMA works on FW-QPSK ,RV-QPSK data modulation. 3] In WCDMA power control frequency is 1500 Hz. 3] In CDMA power control frequency is 800 Hz. 4] In WCDMA cell searching is done in 4] In CDMA cell searching is done in 3-step approach via primary, secondary Sync through time-shifted short code search code and CPICH correlation 5] CDMA has chip rate is 3.84Mcps 5] CDMA has chip rate is 1.22Mcps.
  18. 18. THANK YOU…

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