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Cell phone generations modulations schemes, access points, and protocols

Discussion in 'General Electronics Discussion' started by dietermoreno, Feb 17, 2013.

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  1. dietermoreno

    dietermoreno

    238
    0
    Dec 30, 2012
    I have some questions about cell phone generations regarding modulation schemes, access points, and protocols after I read some tutorials on how cell phones work.

    Is this correct as follows?:



    1G





    Modulation

    modulation scheme: FM (analog)


    Amplification

    RF gain stage: class A transistor

    AF gain stage: class A transistor

    modem gain stage: N/A


    Frequency Synthesis

    Synthesis circuit: phase locked loop

    Type of phase locked loop: analog



    Voice

    access point for voice: control channel frequency codes

    voice protocol: analog

    voice service: GSM

    encryption: unencrypted

    codec for voice stream: N/A

    data transmission and reception rate for voice (synchronous): N/A

    duplex: yes

    duplex type: separate channel for each direction of the conversation using a different frequency



    Text messages

    access point for text messages: can not receive or send text messages

    protocol for text messages: N/A

    text service: N/A

    file type for text messages: N/A

    maximum file size of text message: N/A

    data transmission rate for text message: N/A

    data reception rate for text message: N/A

    duplex: N/A

    duplex type: N/A



    Photos

    access point for photos: can not receive or send photos

    protocol for photos: N/A

    photo service: N/A

    file type for photos: N/A

    maximum file size of photo: N/A

    duplex: N/A

    duplex type: N/A



    Videos

    access point for videos: can not receive or send videos

    protocol for videos: N/A

    video service: N/A

    file container for videos: N/A

    codec for videos: N/A

    duplex: N/A

    duplex type: N/A


    Internet

    access point for internet: can not connect to the internet

    IP address: N/A

    protocol for internet: N/A

    internet service: N/A

    file types from internet supported: N/A

    total data rate: N/A

    duplex: N/A

    duplex type: N/A






    2G





    Modulation

    modulation scheme: FM (digital)


    Amplification

    RF gain stage: op Amp

    AF gain stage: op Amp

    modem gain stage: op Amp


    Frequency Synthesis

    Synthesis circuit: phase locked loop

    Type of phase locked loop: digital



    Voice

    access point for voice: control channel frequency codes

    voice service: GSM

    voice protocol: CDMA

    encryption: CDMA

    codec for voice stream: Windows Media Audio mono 8,000khz sample rate 4kbps bit rate

    duplex: Yes

    duplex type: separate channel for each direction of conversation using different frequency




    Text messages

    access point for text messages: control channel frequency codes

    protocol for text messages: dial up CDMA

    file type for text messages: *.txt

    maximum file size of text message: 160 bytes

    data transmission rate for text message: 80 bytes/second

    data reception rate for text message: 80 bytes/second

    text message service: GSM and SMS

    duplex: No

    duplex type: N/A



    Photos

    access point for photos: control channel frequency codes

    protocol for photos: dial up CDMA

    photo service: GPRS

    file type for photos: *.JPEG

    maximum file size of photo: 100kb

    max data rate: 144kbps

    duplex: No

    duplex type: N/A


    Videos

    access point for videos: control channel frequency codes

    protocol for videos: dial up CDMA

    video service: GPRS

    file container for videos: *.MPEG, *.MPG, *.MP4, *.FLV, *.3GP, *.WMV

    codec for videos: a codec that will force to 240p 1,000kbps video and 44.1khz 16 bit mono 64kbps audio

    max data rate: 144kbps

    duplex: No

    duplex type: N/A


    Internet

    access point for internet: control channel frequency codes

    IP address: dynamic IP address assignment assigned by tower

    protocol for internet: HTTP over CDMA

    file types from internet supported: *.html, *.js

    max data rate: 144kbps

    max transmit data rate: 44kbps

    max receive data rate: 100kbps

    duplex: Yes

    duplex type: dial up connection over voice channels



    3G





    Modulation

    modulation scheme: FM (digital)


    Amplification

    RF gain stage: op Amp

    AF gain stage: op Amp

    modem gain stage: op Amp


    Frequency Synthesis

    Synthesis circuit: phase locked loop

    Type of phase locked loop: digital



    Voice

    access point for voice: control channel frequency codes

    voice service: GSM

    voice protocol: CDMA

    encryption: CDMA

    codec for voice stream: Windows Media Audio mono 8,000khz sample rate 4kbps bit rate

    duplex: Yes

    duplex type: separate channel for each direction of conversation using different frequency




    Text messages

    access point for text messages: control channel frequency codes

    protocol for text messages: dial up CDMA

    file type for text messages: *.txt

    maximum file size of text message: 160 bytes

    data transmission rate for text message: 80 bytes/second

    data reception rate for text message: 80 bytes/second

    text message service: GSM and SMS



    Photos

    access point for photos: control channel frequency codes

    protocol for photos: broadband CDMA

    photo service: GPRS

    file type for photos: *.JPEG

    maximum file size of photo: as big as camera resolution will allow

    max data rate: 1.5Mbps

    duplex: No

    duplex type: N/A


    Videos

    access point for videos: control channel frequency codes

    protocol for videos: broadband CDMA

    file container for videos: *.MPEG, *.MPG, *.MP4, *.FLV, *.3GP, *.WMV

    codec for videos: a codec that will force to 240p 1,000kbps video and 44.1khz 16 bit mono 64kbps audio

    max data rate: 1.5Mbps


    Internet

    access point for internet: control channel frequency codes

    IP address: dynamic IP address assignment assigned by tower

    protocol for internet: HTTP over CDMA

    file types from internet supported: *.html, *.js, *.JPEG, *.MPEG, *.MPG, *.MP4, *.FLV, *.3GP, *.WMV, *.WAV, *.mp3,

    *.AAC, *.FLAC

    max data rate: 1.5Mbps

    transmit data rate: 500kbps

    receive data rate: 1Mbps





    4G





    Modulation

    modulation scheme: QAM USB

    Amplification

    RF gain stage: op Amp

    AF gain stage: op Amp

    modem gain stage: op Amp


    Frequency Synthesis

    Synthesis circuit: phase locked loop

    Type of phase locked loop: digital



    Voice

    access point for voice: IP address

    voice service: 4G LTE

    voice protocol: IP

    encryption: IP

    codec for voice stream: Windows Media Audio mono 8,000khz sample rate 4kbps bit rate

    duplex: Yes

    duplex type: USB over IP




    Text messages

    access point for text messages: control channel frequency codes

    protocol for text messages: dial up CDMA

    file type for text messages: *.txt

    maximum file size of text message: 160 bytes

    data transmission rate for text message: 80 bytes/second

    data reception rate for text message: 80 bytes/second

    text message service: GSM and SMS



    Photos

    access point for photos: IP address

    protocol for photos: IP

    photo service: 4G LTE

    file type for photos: *.JPEG

    maximum file size of photo: as big as camera resolution will allow

    max data rate: 1.5Mbps

    duplex: Yes

    duplex type: USB over IP


    Videos

    access point for videos: IP address

    protocol for videos: IP

    file container for videos: *.MPEG, *.MPG, *.MP4, *.FLV, *.3GP, *.WMV

    codec for videos: a codec that will force to 240p 1,000kbps video and 44.1khz 16 bit mono 64kbps audio

    max data rate: 1.5Mbps

    duplex: Yes

    duplex type: USB over IP


    Internet

    access point for internet: control channel frequency codes

    IP address:static IP like on PC unless use proxy

    protocol for internet: HTTP over IP

    file types from internet supported: *.html, *.js, *.JPEG, *.MPEG, *.MPG, *.MP4, *.FLV, *.3GP, *.WMV, *.WAV, *.mp3,

    *.AAC, *.FLAC

    max data rate: 4Mbps

    transmit data rate: 1Mbps

    receive data rate: 3Mbps
     
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