telecomunication technologies.pdf

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    CDMA TDMA

    FDMA/TDMA TDMA-SC CDMA 2000 W-CDMA (UMTS)

    TD-SCDMA

    CDMA 2000 1X

    CDMA 2000 1X EV-DO Rev. A

    CDMA 2000 1X EV-DO Rev.B

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    HSDPA

    HSUPA

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    2G 3G

    Channel Spacing

    200 kHz 5 MHz

    Cell Planning

    Freq. Reuse Factor 2

    Freq. Reuse Factor = 1

    Services

    Primarily Voice Low/Medium Rates Data

    Multimedia Services Higher Rate Data

    Switching

    Circuit Switch Circuit & Packet Switch

    2G 3G

    Number of Users/Carrier Freq.

    Securiy

    Air Interface Encryption / Algorithm

    Air and Network Encryption / Algorithm

    8 Users

    Multiplexing

    FDMA / TDMA Spread Spectrum (CDMA)

    512 Users

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    Frequency Band 2110-2170 MHz (DL) / 19201980 MHz (UL)

    Channel Band Width 5 MHz

    Modulation QPSK (DL) / BPSK (UL)

    Chip Rate 3.84 Mcp/s

    Frequency Reuse 1

    Channel Coding Convolutional Coding / Turbo Coding

    Pulse Shaping Root Raised Cosine (roll-off = 0.22)

    Max. User Data 2.3 Mb/s

    Frame Length 10 ms (38400 Chips)

    No. Slots/Frame 15

    Spreading Factor 4 512 (DL) / 4 256 (UL)

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    Service profile Data Rate Transmission

    Method

    Sample

    Application

    Voice 12.2 kb/s Circuit Switched Voice Calls

    Simple Message 14 kb/s Packet Data SMS , MMS

    Circuit Switched Data 14.4 kb/s Circuit Switched E-Mail

    Medium Multimedia 384 kb/s Circuit Switched Online Gaming

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    Multimedia 128 kb/s Packet Data Video-Call

    High Multimedia 2 mb/s Packet Data Video-Streaming

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