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FHSS- Which has been dropped recently
DSSS- which is still used by access points to advertise themselves
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∙ 14y ago
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What encoding or modulation technology does 802.11a use?
OFDM
What encoding or modulation technology does 802.11 a use?
OFDM
What technologies do International Telecommunications Union-Technology standards use?
Differential Phase shift key (DPSK) Quadrature amplitude modulation (QAM)
What is use of time delay in adaptive delta modulation?
It is used to delay the modulation
What are the advantages frequency modulation amplitude modulation?
Frequency modulation have some advantages over amplitude modulation, FM is not sensitive to the amplitude noise, and have high efficient use of transmitted power
What modulation does bluetooth use?
It uses GFSK (Gaussian Frequency Shift Keying) modulation technique.
How do you use lempel ziv algorithm?
how to use lempel_ziv encoding ?
Why do you use modulation?
MODULATION is a media for transferring information it can come in many forms FM ,AM, PULSES, PAM and so forth.
Why we use modulation in laser communicaton?
transmit the information
What is square law diode modulator?
Methods of amplitude modulation can be put in the two categories namely Linear modulation methods and Square law modulation methods. Linear modulation method utilizes the linear region of the current voltage characteristics of the amplifying device that is transistor or electron tube. Square law modulation method utilizes the square law region of some current voltage characteristics of a diode or transistor or electron tube. A large number of linear modulation methods have been devised and have been used to varying degree. These methods are namely linear shunt plate modulation or anode choke modulation, linear series plate modulation, grid bias modulation, cathode modulation, suppressor grid modulation, screen grid modulation, collector modulation. Square law modulation circuits make use of non linear current voltage characteristics of diodes or triodes and are in general suited for use at low voltages. Important square law modulation methods are square law diode modulation and balanced modulator.
Why do you use sigma delta modulation instead of adaptive delta modulation?
if we need simple transmitter and receiver, if we need low bandwidth
Why phase modulation is used?
Actually phase modulation was used for the color signal in all analog TV systems.Phase modulation, with some signal preprocessing, was used to indirectly get frequency modulation in many FM transmitters.Certain modems use phase amplitude modulation.etc.
