frequency modulation, preferably.
satellite is satellite
Why Fresnel zone affecting satellite and ground communication?
A terrestrial system for satellite communication is one that facilitates. This includes the facilitation of audio, data, and any other communication.
Answer: 1.communication satellite 2.navigational satellite 3.weather satellite 4.millitary satellite 5.scientific satellite 6.satellite launches. It composed of 6 satellites...........i hope.....my answer can help you.....
For communication satellites the range is much higher than that of communication relay. Communication Satellite can cover up to several thousands of kilometers. For communication relay, the uplink and the downlink frequency is the same. But for communication satellites the uplink and the downlink frequencies are different in order to avoid interference.
qpsk modulation
George Clifford Hartley has written: 'Techniques of pulse-code modulation in communication networks'
Three different modulating techniques are emploed to provide digital television (i.e. satellite, cable, UHF ) and these are known as DQPSK, QAM and COFDM. Each technique is a variation of phase modulation. QAM also takes advantage of amplitude as well as phase changes.
The modulation techniques for video signals include the utilization of the amplitude modulation technique. The amplitude of the carrier wave is made proportional to the video signal voltage. It also utilizes frequency modulation technique.
Frequency shift keying in digital communication and Frequency modulation in analog communication..........
Modulation is the process of varying a carrier signal's properties, such as amplitude, frequency, or phase, to encode information for transmission. In communication systems, modulation is used to efficiently transmit data over long distances by converting the information into a form that can be carried by the carrier signal. Two examples of how modulation is utilized in modern technology are: In Wi-Fi technology, modulation techniques like Quadrature Amplitude Modulation (QAM) are used to encode digital data into radio waves for wireless communication between devices. In digital television broadcasting, modulation methods such as Vestigial Sideband Modulation (VSB) are employed to transmit audio and video signals over the airwaves for high-quality TV reception.
satellite is satellite
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
Adaptive delta modulation is used in audio communication systems to avoid the two drawback of delta modulation.
Data modulation is a method of Electronic packing of data. In Data communication data is transmitted through a process which is called "Data Modulation".
definition of optical satellite communication
The first communication satellite was Echo NASA