PN code
Imagine you have a toy car that you want to control by sending signals from a remote control. But there are other remote control cars nearby and all of them are responding to the same signals. How do you make sure that only your car responds to your signals?
A similar problem exists in communication systems. Multiple devices use the same frequency band to transmit and receive information. This can lead to interference and errors in transmission. To solve this problem, a technology called "spread spectrum" is used.
One of the methods of spread spectrum is known as "Pseudo-Noise Code" or PN Code. It's a special type of code that is used to spread a signal across a large range of frequencies so that it can be distinguished from other signals. It's like a secret code that only your device and the receiving device understand.
The PN code is generated by using a mathematical algorithm to produce a sequence of binary numbers that are randomly distributed. This sequence is then applied to the data that needs to be transmitted. The result is that the original data looks like a random noise signal when it's transmitted, making it difficult for anyone else to intercept and understand the signal.
At the receiving end, a matching PN code is used to demodulate the signal and retrieve the original data. Since the PN code is known only to the transmitting and receiving devices, it's like a secret code that only they can understand.
In simple terms, PN Code is a special type of code that makes sure your signal is unique and can be received only by the intended recipient, making sure that your toy car only responds to your remote control and not to others nearby.
A similar problem exists in communication systems. Multiple devices use the same frequency band to transmit and receive information. This can lead to interference and errors in transmission. To solve this problem, a technology called "spread spectrum" is used.
One of the methods of spread spectrum is known as "Pseudo-Noise Code" or PN Code. It's a special type of code that is used to spread a signal across a large range of frequencies so that it can be distinguished from other signals. It's like a secret code that only your device and the receiving device understand.
The PN code is generated by using a mathematical algorithm to produce a sequence of binary numbers that are randomly distributed. This sequence is then applied to the data that needs to be transmitted. The result is that the original data looks like a random noise signal when it's transmitted, making it difficult for anyone else to intercept and understand the signal.
At the receiving end, a matching PN code is used to demodulate the signal and retrieve the original data. Since the PN code is known only to the transmitting and receiving devices, it's like a secret code that only they can understand.
In simple terms, PN Code is a special type of code that makes sure your signal is unique and can be received only by the intended recipient, making sure that your toy car only responds to your remote control and not to others nearby.