digital modulation वाक्य
उदाहरण वाक्य
मोबाइल
- The data is imposed on the waves through digital modulation.
- All are using different digital modulation schemes from each other.
- Modulation order can only be defined for digital modulations.
- In digital modulation, an analog carrier signal is modulated by a discrete signal.
- This was quickly supplanted by digital modulation methods to achieve even greater spectral efficiency.
- Any digital modulation scheme uses a finite number of distinct signals to represent digital data.
- The voltage fluctuations are also translated into binary data and used to control digital modulation.
- In the case of digital modulation, the carrier f _ c \, is never transmitted.
- When the order of a digital modulation approaches infinity its properties approach those of the respective analog modulation.
- Furthermore, another digital modulation is line coding, which uses a baseband carrier, rather than a passband wave.
- Many digital modulation methods such as COFDM use the electromagnetic spectrum very efficiently, allowing for a very tight spectral mask.
- In practice this upper bound can only be approached for line coding schemes and for so-called vestigal sideband digital modulation.
- By switching the sound field on and off very rapidly the deflected beam appears and disappears in response ( digital modulation ).
- It is for this reason that, in the context of digital modulations, digitally modulated signals are usually referred to as carriers.
- Thus the analogue modulations can be viewed as extreme cases of higher-order digital modulations for which the order is equal to infinity.
- Digital modulation schemes are possible because the transmitter-receiver pair have prior knowledge of how data is encoded and represented in the communications system.
- The bit stream is split into several parallel data streams, each transferred over its own sub-carrier using some conventional digital modulation scheme.
- Digital modulation methods can be considered as digital-to-analog conversion, and the corresponding demodulation or detection as analog-to-digital conversion.
- Most textbooks would consider digital modulation schemes as a form of digital transmission, synonymous to data transmission; very few would consider it as analog transmission.
- You can't talk about it in terms of " bit rate " ( as you could with digital modulation schemes like PSK and OFDM ).
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