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comparison of CDMA, TDMA,OFDM,CDMA-2000, SSMA,WCDMA

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Smt. Indira Gandhi College of Engineering, Navi Mumbai, Mumbai
Smt. Indira Gandhi College of Engineering, Navi Mumbai, Mumbai

This document provides a comparison table of various mobile communication technologies including FDMA, TDMA, W-CDMA, CDMA-IS-95, CDMA-IS-2000, OFDM, SSMA, and SDMA. The table compares these technologies across parameters such as features, technology, generation, encoding, year of first use, roaming capabilities, interference levels, signal quality, frequency utilization, call density, handoff types, and ability to perform voice and data communications simultaneously. SSMA is described as a tool to automate database migration from databases like Microsoft Access, DB2, MySQL, Oracle and Sybase to Microsoft SQL Server.

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umakant bhaskar gohatre SIGCE, KOPARKHAIRANE, NAVI MUMBAI Comparison table of FDMA, TDMA, W-CDMA, CDMA-IS-95, CDMA-IS-2000, OFDM, SSMA, SDMA Parameters FDMA TDMA W-CDMA CDMA-IS- 95 CDMA- IS-2000 OFDM SSMA SDMA Feature NMT GSM UMTS (3GSM) IS-95 (CDMA one) IS-2000 (CDMA 2000) LTE Migration Assistant (SSMA) is a tool to automate database migration to SQL Server from Microsoft Access, DB2, MySQL, Oracle and Sybase. Soft capacity limit: system performance degrades for all users as number of users increase, Wide frequency spectrum reduces fading Technology FDMA TDMA and FDMA W-CDMA CDMA CDMA OFDMA Asses Techniques FHMA, DSMA, CDMA HC-SDMA
Generation 1G 2G 3G 2G 3G 4G 2G, 3G 5G Encoding Analog Digital Digital Digital Digital Digital Digital Year of First Use 1981 1991 2001 1995 2000 / 2002 2009 1980 Roaming Nordics and several other European countries Worldwide, all countries except Japan and South Korea Worldwide Limited Limited Limited Limited Limited Handset interoperability None SIM card SIM card None RUIM (rarely used) SIM card None None Common Interference None Some electronics, e.g. amplifiers None None None None None None
Signal quality/coverage area Good coverage due to low frequencies Good coverage indoors on 850/900 MHz. Repeaters possible. 35 km hard limit. Smaller cells and lower indoors coverage on 2100 MHz; equivalent coverage indoors and superior range to GSM on 850/900 MHz. Unlimited cell size, low transmitter power permits large cells Unlimited cell size, low transmitter power permits large cells Unlimited cell size, low transmitter power permits large cells Space-division multiple access, a channel access method used in communication (for instance in MIMO technology) Frequency utilization/Call density Very low density 0.2 MHz = 8 timeslots. Each timeslot can hold up to 2 calls (4 calls with VAMOS) through interleaving. 5 MHz = 2 Mbit/s. 42Mbit/s for HSPA+. Each call uses 1.8-12 kbit/s depending on chosen quality and audio complexity. Lower than CDMA-2000? 1.228 MHz = 3Mbit/s More Mobiles operate in 800 MHz band and GSM in 900 MHz and 1800 MHz. Both need a new band. Handoff Hard Hard Soft Soft Soft Hard Soft Soft
Voice and Data at the same time No Yes GPRS Class A Yes[2] No No EVDO / Yes SVDO[3] No (data only) Voice possible though VoLTE or fallback to 2G/3G No No umakant bhaskar gohatre SIGCE, KOPARKHAIRANE, NAVI MUMBAI

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comparison of CDMA, TDMA,OFDM,CDMA-2000, SSMA,WCDMA

  • 1. umakant bhaskar gohatre SIGCE, KOPARKHAIRANE, NAVI MUMBAI Comparison table of FDMA, TDMA, W-CDMA, CDMA-IS-95, CDMA-IS-2000, OFDM, SSMA, SDMA Parameters FDMA TDMA W-CDMA CDMA-IS- 95 CDMA- IS-2000 OFDM SSMA SDMA Feature NMT GSM UMTS (3GSM) IS-95 (CDMA one) IS-2000 (CDMA 2000) LTE Migration Assistant (SSMA) is a tool to automate database migration to SQL Server from Microsoft Access, DB2, MySQL, Oracle and Sybase. Soft capacity limit: system performance degrades for all users as number of users increase, Wide frequency spectrum reduces fading Technology FDMA TDMA and FDMA W-CDMA CDMA CDMA OFDMA Asses Techniques FHMA, DSMA, CDMA HC-SDMA
  • 2. Generation 1G 2G 3G 2G 3G 4G 2G, 3G 5G Encoding Analog Digital Digital Digital Digital Digital Digital Year of First Use 1981 1991 2001 1995 2000 / 2002 2009 1980 Roaming Nordics and several other European countries Worldwide, all countries except Japan and South Korea Worldwide Limited Limited Limited Limited Limited Handset interoperability None SIM card SIM card None RUIM (rarely used) SIM card None None Common Interference None Some electronics, e.g. amplifiers None None None None None None
  • 3. Signal quality/coverage area Good coverage due to low frequencies Good coverage indoors on 850/900 MHz. Repeaters possible. 35 km hard limit. Smaller cells and lower indoors coverage on 2100 MHz; equivalent coverage indoors and superior range to GSM on 850/900 MHz. Unlimited cell size, low transmitter power permits large cells Unlimited cell size, low transmitter power permits large cells Unlimited cell size, low transmitter power permits large cells Space-division multiple access, a channel access method used in communication (for instance in MIMO technology) Frequency utilization/Call density Very low density 0.2 MHz = 8 timeslots. Each timeslot can hold up to 2 calls (4 calls with VAMOS) through interleaving. 5 MHz = 2 Mbit/s. 42Mbit/s for HSPA+. Each call uses 1.8-12 kbit/s depending on chosen quality and audio complexity. Lower than CDMA-2000? 1.228 MHz = 3Mbit/s More Mobiles operate in 800 MHz band and GSM in 900 MHz and 1800 MHz. Both need a new band. Handoff Hard Hard Soft Soft Soft Hard Soft Soft
  • 4. Voice and Data at the same time No Yes GPRS Class A Yes[2] No No EVDO / Yes SVDO[3] No (data only) Voice possible though VoLTE or fallback to 2G/3G No No umakant bhaskar gohatre SIGCE, KOPARKHAIRANE, NAVI MUMBAI