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Frequency Hopping is an old technique introduced firstly in military transmission system to ensure the secrecy of communications and combat jamming. Frequency Hopping is mechanism in which the system changes the frequency (uplink and downlink) during transmission at regular intervals. It allows the RF channel used for signaling channel (SDCCH) timeslot or traffic channel (TCH) timeslots, to change frequency every TDMA frame (4.615 ms). The frequency is changed on a per burst basis, which means that all the bits in a burst are transmitted in the same frequency.
What else can I help you with?
Why do you use antenna arrays?
To improve the signal :)
What do engineers use the signal to noise ratio for?
Signal to noise ratio is a measure of signal strength to the background noise. Engineers use the signal to noise ratio to improve digital signal processing.
Vietnam use gsm or CDMA?
gsm
Does Verizon commando have a SIM card?
Nope, Verizion and Sprint are CDMA signal providers. They do not use SIM card. GSM phones do such as AT&T and T-Mobile.
I want to know what a wireless network extender is and how people use them.?
It basically helps to improve signal strength. As an example if I have poor wireless coverage in my area and I have a broadband network it will work to improve my signal strength.
Does smart phone from Bangkok works properly in India?
Many smart phones from Bangkok, Thailand work properly in India if they have been unlocked. Most use the same GSM signal but are locked to a specific carrier signal by the original provider.
Why CDMA sim not working in gsm?
CDMA (Code Division Multiple Access) and GSM (Global System for Mobile Communications) are two different mobile communication technologies that use incompatible network protocols. A CDMA SIM card is designed specifically for CDMA networks and cannot be used on GSM networks, which rely on a different signaling and communication method. Therefore, if you try to use a CDMA SIM in a GSM device, it will not work because the device cannot recognize or process the CDMA signal.
Will an unlocked iPhone 3gs work on Sprint?
No because even if it is unlocked sprint works on a CDMA and AT&T works on a gsm signal it's like trying to use AM on FM radio only
Why won't my Samsung S3650W read my Boost sim card?
Because Boost does not use a GSM network, they use iDEN. Boost phones use a SIM card that is compatible with GSM phones for overseas roaming. However, iDEN is a very different standard from GSM. Most iDEN phones are not compatible with GSM networks, and GSM phones are not compatible with iDEN networks.
Can you use reliance 2G GSM gprs pack in a reliance 3G GSM gprs?
yes
Does tigo Guatemala use SIM card?
Yes, they operate a GSM 850MHz Network, and all GSM phones use Sim Card.
What gsm of paper to be used for a 3ply box having a bursting strength of 250?
u can use 250 GSM paper or 253 GSM for 3 ply box.
