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Uplink/Downlink Frequencies in GSM/CDMA

Viewing 15 posts - 1 through 15 (of 63 total)
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  • Author
    Posts
  • 24th November 2003 at 15:29 #36970
    Madan
    Guest

    hi everybody
    I would like to know why the Base station transmits higher frequencies
    a)when the power required to transmit higher frequencies is more.
    b)Higher the frequency shorter is the distance travelled by the wave.

    Thanks and Regards
    Madan

    26th November 2003 at 11:16 #36971
    Preetham
    Guest

    Hi madan,
    The power saving should be at the mobile station. While the base station aims at low interference (high signal quality) they use higher frequencies.

    Preetham

    27th November 2003 at 07:13 #36972
    madan
    Guest

    hi preetham

    thx for the reply

    madan

    28th November 2003 at 08:22 #36973
    Prabhakar verma
    Guest

    Can you Guys give me the UPLINK and DOWNLINK freq of both GSM 900 and 1800 ,alos of CDMA 95X ,1X,2000x.

    3rd December 2003 at 14:53 #36974
    Abdul Gafur Lodi
    Guest

    hi Prabhakar verma
    hello so far i know the gsm 900 uplink is 890-915mhz and downlink is 935-960mhz.

    11th December 2003 at 17:16 #36975
    sushil
    Guest

    hello team
    i wat to know the uplink & downlink freq. of cdma .
    tell me in detail how we r getting this
    thx.

    16th December 2003 at 08:27 #36976
    chachu
    Guest

    hi guys,

    can some1 help me out in knowing the Uplink and downlink frequencies of GSM 1800.

    yours,
    chachu.

    14th February 2004 at 10:55 #36977
    Manu
    Guest

    CDMA 800
    Uplink 824-849 Mhz
    Downlink 869-894 Mhz

    14th February 2004 at 18:23 #36978
    Assem Asa’d
    Guest

    Hi Preetham
    Reference to your first reply about the question of our friend Madan, It is Ok that the power saving should be at the mobile station due to its low power budget while the base station has a reliable and continuous power resources, but the question is what is the relation between signal quality and the frequency if it is higher or lower.

    Thanks in Advance
    Assem

    19th March 2004 at 18:24 #36979
    Scot
    Guest

    What is the frequency band used in India for CDMA ?
    Other than 800 MHZ Band is there is any other bands ( standard )?

    Rgds

    20th March 2004 at 11:56 #36980
    akshay
    Guest

    base station transmit at down link ferquency band of930–960mhz because as u know higer the frequency lesser is the travelled distance.so in case of base station we can transmit at higer power and at higer frequency.
    ,while ms(mobile station )should be transmitting at lower frequency band ie—890–915Mhz(uplink) Mhz so it is more easy for mobile station to transmit to the base transiever station at lower power and that will consume less battery power .

    20th March 2004 at 13:34 #36981
    akshay
    Guest

    i miss typed the downlink frequency. it is 935- 960 Mhz

    25th March 2004 at 19:07 #36982
    Scot
    Guest

    890-915 & 935-960 is GSM 900 Band.

    What about CDMA in India ?

    Rgds

    26th March 2004 at 12:22 #36983
    Srinivas Huddar
    Guest

    how to calculate channel nos in CDMA

    28th March 2004 at 09:31 #36984
    WALEED
    Guest

    hi all
    the GSM 900 frequency is:
    uplink is 890-915 MHZ
    DOWN LINK IS 935-960
    GSM (DCS)1800 frequency is:
    up link 1710-1785MHZ.
    down link is 1805-1880 MHZ.
    gsm(PCS) 1900 frequency:
    up link 1815-1910 MHZ
    down link 1930-1990 MHZ

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