- This topic has 77 replies, 1 voice, and was last updated 4 years, 10 months ago by gebreegziabher.
4th June 2010 at 06:36 #50934islam aliGuest
wat is the basic function of the Trx in Bts? how a call run’s in a bts?9th June 2010 at 13:13 #50935KJBGuest
Kindly Consult NED for Nokia TRX.
Khalid12th June 2010 at 07:31 #50936kalim .iGuest
hello dear function of noika trx:-
1 trx card supports 8 time i.e. max. no of 8 users . but not practically. it will supports max. no of 7 callers.
since 1 time slots = 16 kbps
max no of callers, if
4+4+4(using 8 users)=96 users at H.R
4+4+4(using 7 users)=84 users at H.R
4+4+4(using 8 users)=192users at F.R
4+4+4(using 7 users)=168 users at F.R
Function of Trx=
trx consist of 1 Tx, 1 main Rx and 1 diversity Rx.
Trx unit perform Rf modulation/demodulation and amplification of one Rf carrier.
It also handle uplink signal from ms to bts and downlink signal from bts to ms.
thanks1st July 2010 at 11:41 #50937nitishGuest
trx is a hardware insite bts.one trx can take at a time maximum no of 8 calls on full rate and 16 in full rate ,this also may not possible since time slots are required signalling purposes also7th July 2010 at 09:18 #50938islam aliGuest
wat is the function of duplexer @multicoupler in the nokia designed Bts.?7th July 2010 at 11:06 #50939BijoyGuest
Hi Islam Ali
Functions of Duplexer:
1.combines transmitted and received signals into one antenna
2.amplifies received signals with a variable-gain LNA.
Functions of multicoupler:
The multicoupler splits Received (RX) and Diversity-Received (DRX) signals and distribute them to the Transceiver units.
Bijoy13th July 2010 at 09:23 #50940Rajiv SinghGuest
How many call run at the same time on single trx1st September 2010 at 17:20 #50941rajib jenaGuest
i want to know how bts works in detail?2nd November 2010 at 10:27 #50942Narender reddy.pGuest
what is the permanent solution of cfr,mean holding & path loss24th November 2010 at 08:12 #50943UmeerGuest
would you please explain in detail the function of TRX without any vendor reference ??
thanks in advance7th December 2010 at 10:00 #50944Vivekananda MaityGuest
What is the function of LAPD2nd January 2011 at 16:24 #50945savanGuest
multicoupler in bts?2nd January 2011 at 22:16 #50946kimGuest
hi , I am a fresher and i m really want to learn the details about the trx and e1 . how the calls are carried out . what it is made up of and other detal . kindly guide me from where i can get the material on net5th January 2011 at 10:36 #50947pankamGuest
wtat is tscand wts its function in bcch trx,,,,8th February 2011 at 12:05 #50948MRGGuest
DUPLEXER is a passive device where TX and RX signals are connected to same antenna for simultaneous transmission and reception.
MULTICOUPLER is a passive device where received signal is splitted to feed a number of receivers(4,8,16).
COMBINER is a passive device where two or more transmitters are combined to feed to a single antenna.