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There are 2 types of cdma terminals
1) Non UIM terminals in which the network parameters are saved in the terminal it self(in a part of flash memory called NAM).
2) The other type is UIM terminals in which the network parameters are saved in memorey of SIM card.
Best Regards
Mostafa
Q1)i think power efficiency is the contribution of audio signal power in over all AM DSB power
EFFICIENCY=Paudio/(Pcarrier+Paudio)
i think that the correct answer is A.
Example:
for transmission of single tone modulated signal s=Ac(1+mcos(Wmt))cosWct
Ps=Ac^2/2+(mA)^2/4
Paudio=(mAc)^2/4...
WIBRO:is a wireless internet broad band technology proposed by south korean telecom industry,it is a proposal for ITU 4G standared 802.16e.Like WIMAX,WIBRO aims to interconnect all WLANS and other networks together to form whole one network,but the difference that WIBRO is mainly a propose for...
2g power
2G include 2 system GSM ,and IS-95,which system u need
for is-95 there are 3 schemes of power control
1-Reverse link power control
*open loop
In this scheme,the MS(Mobile Station)measures the received pilot power from Base station,then it decides whether it increases or...
Re: In the GSM network, how many channel found in one cell?
in GSM -800MHz band ,124 carrier divided equally for uplink and downlink
so no of channels =62 carrier
assume we have N=7 cluster with omnidirectional antenna,so no of carriers /cell=8
we have 8 time slots per carrier ,6 of them for...
Re: 3G!!!
when GSM and IS-95 were firstly released ,GSM was better a than cdma ,also it was more spread than IS-95 as many standarization body in europpe like ETSI contribute in standarizing this technolgy,on contrary cdma was standarized by TIA only so it was used in north america and some...
the correlation property state that if u have 2 orthognal signals (Φn,Φm) with period T then :
T
correlation between 2 signals ∫ ΦnΦm dt
0 T
IF Φn and Φm are orthognal then ∫ ΦnΦm dt not equal 0...
reuse factor gsm
there are many differences between cdma and GSM systems ,the multiple access technique GSM is TDMA OVER FDMA ,while in IS-95 IS cdma over FDMA.in general the capacity of cdma is larger than it in GSM because no of codes per carrier are larger than no of available time slots per...
simply the bw of channel is symbol rate /2 ,after carrying signal on carrier frequency then overall BW will be Rs ,so channel width is 45 MHz.
the attached paint file may help you.
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