0
What is the technique used to transmit and receive multiple signals using multiple frequencies over one cable?
Carlosmadureira
DWDM (Dense Wavelength Division Multiplexing)
Wiki User
∙ 13y ago
Wiki User
∙ 15y agoI think you mean spread spectrum.
Add your answer:
Earn +20 pts
Why transmit frequencies are allocated higher frequencies than that of receive frequencies?
That's not the case at all. A moment's thought will show you why that's impossible ... no 2-way linkcould work if that were the rule.Picture two communications sites talking to each other by radio over a "duplex" link ... meaning thatthere's 2-way communication; each terminal can hear the other and talk to the other.In order for them to communicate with each other, each receiver has to listen to the frequency wherethe other end is transmitting.If one site transmits HI and receives LO, then the opposite site had BETTER transmit LO and receive HI,otherwise neither site can hear the other one !It must be that exactly half of all the duplex terminals in the world transmit HI and receive LO,and exactly the other half must transmit LO and receive HI.
Where does wireless transmit and receive signal from?
It has an access point which transmit signal to the client and receive.
Why do satellites use microwave frequencies?
Microwaves travel in a straight line making them easy to send and receive.
Why channel spacing is 200khz in gsm?
Simply because of the band-width required to transmit and receive calls. If the channel spacing was narrower - they'd need to reduce the band-width - which would reduce the amount of data they could transmit.
What is the reasone for select Ku band frequency is 1411 G Hz in satellite communications?
Ku band, (Transmit frequency 13.75 to 14.50 GHz, Receive frequency 10.70 to 12.75 GHz dependant on which region of the earth you live in) is used rather than C band (4 to 6 GHz) because the higher frequency allows for broader transmit and receive bandwidths, so more data, computer traffic, movies, etc can be sent. The signal power lost in transmitting from earth to the satellite and back to earth again varies with frequency, but not as a simple linear sloping line increasing with frequency way, it has peaks and troughs. This is because at some frequencies Oxygen and Water absorb much more power and it is difficult to generate enough power to pass a strong signal through the atmosphere, so those frequencies are avoided. Ku band uses a part of the frequency spectrum with a lower atmospheric loss between earth and space, so relatively less microwave power is needed to efficiently transmit to and from the satellite.
To transmit and receive signals to and from multiple nodes in a three story house?
Omnidirectional
How radio repeaters work?
A radio repeater works by having the transmitter and receiver on separate frequencies. This allows the transmitter to re-transmit the received audio or data. To prevent the transmitter from opening due to noise on the receiver most systems will only re-transmit if they receive a keying tone at the start of the transmission, a sub audible tone which is transmitted with the normal modulation or a digital code. Some repeaters use a separate antenna for transmit and receive although most use a single antenna and a filtering arrangement to split the transmit and receive frequencies. This filter is called a duplexer as it permits duplex operation.
Why transmit frequencies are allocated higher frequencies than that of receive frequencies?
That's not the case at all. A moment's thought will show you why that's impossible ... no 2-way linkcould work if that were the rule.Picture two communications sites talking to each other by radio over a "duplex" link ... meaning thatthere's 2-way communication; each terminal can hear the other and talk to the other.In order for them to communicate with each other, each receiver has to listen to the frequency wherethe other end is transmitting.If one site transmits HI and receives LO, then the opposite site had BETTER transmit LO and receive HI,otherwise neither site can hear the other one !It must be that exactly half of all the duplex terminals in the world transmit HI and receive LO,and exactly the other half must transmit LO and receive HI.
Enables multiple nodes to simultaneously transmit and receive data over different logical network segments?
Switched Ethernet
Where does wireless transmit and receive signal from?
It has an access point which transmit signal to the client and receive.
To transmit and receive signals from multiple nodes in a three-story house what type of antenna should an access point use?
omnidirectional
What is the task of a rf module?
The task of an RF module is to transmit and receive radio signals across a number of frequencies. They are part of a small electrical circuit placed in a radio or similar device.
What do two way radios do function wise?
Two way radios can both transmit and receive signals. It uses two different radio frequencies to carry the two conversations simultaneously.
Which component of telecomunication enable it to receive and transmit multiple calls at a time?
The packet system after have been built from the digitaly audio separation is one way to do it'
What are satellite waves?
The appropriate wording should be frequencies instead of waves. Satellites use many different frequencies to transmit and/or receive information. The way that these frequencies travel are by waves. as mention above there are many different kinds of frequencies/waves. Here is a short list:Microwaves.UHFGamma-RayInfraredUltra violetX-raysit is important to note that gamma/x rays expose humans to harmful radiation so i dont think there used, but n e way.
What is Half- duplex?
Half duplex communication means that a system may transmit and receive signals, but not at the same time. It has to switch over from transmit to receive, and vice-versa. Think of an analogy of a walkie-talkie; when you press the transmit button you cannot hear or receive a message until you release the transmit button.
What is the opposite of transmit?
The opposite status is to receive. The failure to transmit would be to withhold or cut off.
