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14th September 2006 at 22:07 #39575PixGuest
A BTS is a telecom equipment that allows to send and receive data between mobile stations / antennas, and communicate with the BSC.
CDMA is a telecom protocol, and as such, it is comparable to GSM or GPRS. (however those protocols are different in the way they work or regarding what they offer)
IMO, you should buy a book talking about telecoms fundamentals, because you’re starting from scratch here…26th September 2006 at 09:08 #39576JeTGuest
just want to know when will CDMA technology be dependent on E-1 availability knowing that a BTS is connected to a BSC via E-1 connection?
Thanks30th September 2006 at 18:37 #39577Bo TruongGuest
Can anyone give me some Info. about UMTS courses in Dallas, TX or elsewhere in US. I’d like to educate myself about UMTS. Thanks.7th October 2006 at 10:00 #39578rathinavel muthukumarGuest
i want 2 know ericsson bts,motorola bts&gsm douments!anybody having this doum!pls send me on mail!ths!10th October 2006 at 00:19 #39579HermesonGuest
Can anyone help me on how to design a “BTS radio network design”.. i have already made a “microwave communication design”, all the computations for this design was already made… now that i am task to design a BTS network design, I can’t still figure out if it has the same computations with that in microwave, (e.g height of antenna, fresnel zones, azimuthal calculation and other terms needed for establishing cellsite tower).. I hope someone could really inform me regarding what should i do to successfully establish a BTS radio network design.. thanks in advance for your help>> God Bless!!11th October 2006 at 05:32 #39580Lijo JohnyGuest
How does a CDMA base station works. does cdma uses E1.11th October 2006 at 17:17 #39581BehzadGuest
Do you mean cell planning or access network planning( i.e.,the network for connecting BTSs to BSC)? Access network planning is exactly the same as microwave planning,as far as you use p-p radio.23rd October 2006 at 11:50 #39582GGuest
Hi,how to find foult location from omc-r for diagnose_devise
vswr_test or rf_loopbeack?27th October 2006 at 08:04 #39583Ali Gul SolangiGuest
I want to learn to about vedio board casting equipment via satellie ( Tv channel up linking)
1, MPEG Encoders
4, modulators, up converter,SSPA,
and anteena installtion
ali gul28th October 2006 at 04:59 #39584PrakashGuest
I would like to know what is maximum temperature where Nokia bts can work with out AC in a shelter.30th October 2006 at 22:49 #39585Is-hakaGuest
hi i would like to know the procedure on installing IDU &ODU of BTS1st November 2006 at 08:30 #39586AshveerGuest
I would just like to know about the DUAMCO. The insertion losses according to the siemens overview is 5.7 for the 4:2. Does this mean that tehre is a 5.7 loss per antenna output or is it safe to divide that insertion loss by 2 to get the loss per antenna output1st November 2006 at 09:24 #39587VijayGuest
Suppose there is one RF carrier equipped in a BTS. Using combined mode i.e., TSO carrying BCCH+CCCH+SDCCH/4 and remaining are 7 TCHs.Then please clarify me how many simultaneous calls can be made with just 4 SDCCHs available?
Suppose if half-rate isimplemented in the same carrier, then how many simultaneous calls can be madewith again the same 4 SDCCHs available?
Please,anyone, clarify me …1st November 2006 at 14:48 #39588yogesh_rfGuest
will you please explain what type of problem is coming to you in detail,SDCCH is just for SMS,LAC UPDATE,call initiation etc.
yogesh_rf1st November 2006 at 18:10 #39589PixGuest
sdcch are use for the call setup, a SDCCH is released as soon as the call is put on the TCH channel.
So in your case :
Full rate, 1 TRX (7 TCH, 1 C-BCCH) can carry 7 calls at once
Half rate, 1 TRX (7 TCH, 1 C-BCCH) can carry 14 calls at once.
Keep in mind that you should rather use the theoretical capacity of the cell (erlang B law) when computing the voice traffic a given cell can carry.