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When modulation frequency is doubled the modulation index is halved and the modulating voltage remains constant the modulation system is?
the modulation system is of FM
When modulation frequency is double the modulation index is halF and the modulating voltage remains constant the modulation system is?
frequency modulation..
Need of modulation in communication?
Need for modulation: 1. Length of the antenna for a transmitter is inversly proportional to the frequency of the signal to be transmitted. So we try shift the frequency of the singal for the transmission to higher frequencies. 2. Every transmission of signal in a bandwidth is assigned with a particular frequency which is attained by modulating the signal with the carrier frequency. Different modulation techniques are implemented according to the requirements and compatibilities
What is Relationship between electrical and optical bandwidth for an optical fiber communication?
The electrical bandwidth refers to the frequency range that the electronic components in the communication system can handle, while optical bandwidth refers to the frequency range that the optical fiber can transmit. The relationship between the two bandwidths is important in ensuring that the data transmission is efficient and reliable. Matching the electrical and optical bandwidths helps to avoid signal degradation and distortion in the communication system.
What modulation is used in telegraphy system?
pulse code modulation method used a telephony.
What is the highest modulation coefficient and percent modulation possible with a conventional AM system without causing excessive distortion?
the highest modulation coefficient is one (1) and percent modulation is 100
What is the deviation ratio for frequency modulation?
Deviation ratio: In a frequency modulation system, the ratio of the maximum frequency deviation of the carrier to the maximum modulating frequency of the system under specified conditions
What are the factors affecting the choice of modulation type?
The choice of modulation type is influenced by several factors, including bandwidth requirements, signal-to-noise ratio, and the nature of the transmission medium. The application context, such as whether the communication is analog or digital, also plays a crucial role. Additionally, considerations like power efficiency, complexity of the modulation scheme, and resistance to interference or fading can impact the decision. Ultimately, the goal is to optimize performance while meeting the specific needs of the communication system.
What is high level AM modulation?
High level AM modulation is a type of modulation using class c (90 percent) amplifiers. The system uses medium power tubes or transistors and is bulky.
What is the frequency deviation for frequency modulation?
Deviation ratio: In a frequency modulation system, the ratio of the maximum frequency deviation of the carrier to the maximum modulating frequency of the system under specified conditions
Why ppm is said to be better than pwm system?
PPM (Pulse Position Modulation) is often considered better than PWM (Pulse Width Modulation) in certain applications because it provides a more robust signal against noise and interference. PPM encodes information in the position of pulses rather than their width, making it less susceptible to timing errors. Additionally, PPM can allow for more efficient use of bandwidth in communication systems, as it can transmit multiple channels within the same signal. This can lead to improved performance in applications like remote control systems and telemetry.
Difference between channel and bandwidth?
a channel is actually a path through which a signal of a particular frequency travels and bandwidth is the capacity of that path it tells about the number or range of frequencies which a path can carry
