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How does code-division multiplexing distinguish one signal from another?
Wiki User
∙ 7y ago
Code-division multiplexing uses unique spreading codes to encode each signal before combining them in a shared channel. These spreading codes allow the receiver to distinguish between signals by applying the inverse code to extract the desired signal while suppressing interference from others. This method enables multiple signals to coexist in the same frequency band without interfering with each other.
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What does signal-detection theory take into account?
Signal detection theory takes into account the ability to distinguish between meaningful information and random noise in making sensory judgments. It considers both the sensitivity of an individual to detect a signal (discriminability) and their willingness to respond (bias).
What is variable attenuator?
A variable attenuator is a device used to adjust the signal strength of a radio frequency or optical signal. It can be used to reduce the intensity of the signal by an adjustable amount to prevent overloading or distortion in the receiving equipment. Variable attenuators are commonly used in communication systems, test and measurement equipment, and audio systems to control signal levels.
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What is the function of BB2F card used in nokia BTS?
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What is downward multiplexing?
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Why is multiplexing so cost-effective?
Carries multiple signal on a signal medium.
Which multiplexing technique transmits digital signal?
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What is multiplexing in computer network?
multiplexer is a device that add two or more signal in a single signal in networking
Which multiplexing technique shifts each signal to a different carrier frequency?
TDM
When several signals can be transmitted at once it is called?
When several signal transmitted simultaneously. this is called multiplexing of signals.many signal are combined into one and then they transmitted.
Why is modulation necessary before multiplexing?
modulation means transmitting the signal which is to be transmitted along with the carrier wave, then at the receiver it is separated from the carrier and demodulated. So modulation is needed so as to transmit the signal over long distances with higher accuracy. Hence it is required before multiplexing.
What is multiplexing why is multiplexing needed in electronics communication?
multiplexing refeers to the transmission of different signals in the same channel simultaneously. There are many forms of multiplexing that can be used, including frequency division multiplexing(FDM) where individual signals are transmitted over adjacent , non overlapping frequency bands. they are transmitted in parallel and simultaneously in time. In time division multiplexing(TDM) each signal is allowd to use the whole bandwidth for a certain period of time. Multiplexing is needed so that the available channel can be used efficiently and also to save costs. There is too much to know about multiplexing, here is just a short overview. One thing that one has to know is multiple access.
What is a signal-regenerating repeater?
A repeater that is able to distinguish between noise and signal. It reads the signal and retransmits it without the accompanying noise.
What is analog multiplexing?
Analog Multiplexer - Two analog signals as the input, one analog signal as the output, output is the product of the two inputs.
What is the difference between multiplexer and demultiplexer?
A multiplexor is a device that takes two or more signals and encodes them on fewer (often, on one) wire. A demultiplexor is a device that reverse that process.
What is an amplifier repeater?
A repeater that does not distinguish between noise and signal; it amplifies both.
