frequency modulation, preferably.
ask,psk,fsk
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.
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.
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.....
George Clifford Hartley has written: 'Techniques of pulse-code modulation in communication networks'
qpsk modulation
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..........
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
satellite is satellite
Data modulation is a method of Electronic packing of data. In Data communication data is transmitted through a process which is called "Data Modulation".
Adaptive delta modulation is used in audio communication systems to avoid the two drawback of delta modulation.
Adaptive delta modulation is used in audio communication systems to avoid the two drawback of delta modulation.
definition of optical satellite communication
The first communication satellite was Echo NASA