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Amplitude Shift Keying
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ASK modulation using matlab. The Amplitude sift keying method using matlab and it has the problem solving aspect to solve the issues related to the amplititude Shit keying methods
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Quadrature Phase Shift Keying
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The QPSKModulator object modulates using the
quaternary phase shift keying method. The output is a baseband representation
of the modulated signal.
To modulate a signal using quaternary phase shift keying:
Define and set up your QPSK modulator object. See Construction .
Call step to modulate the signal
according to the properties of comm.QPSKModulator .
The behavior of step is specific to each object in
the toolbox.
patriot.prakash 1 0
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MIMO OFDM USING MATLAB
4.1
Multiple input, multiple output-orthogonal frequency division multiplexing (MIMO-OFDM) is the dominant air interface for 4G and 5G broadband wireless communications. It combines multiple input, multiple output ( MIMO ) technology, which multiplies capacity by transmitting different signals over multiple antennas, and orthogonal frequency division multiplexing (OFDM), which divides a radio channel into a large number of closely
spaced subchannels to provide more reliable communications at high
speeds. Research conducted during the mid-1990s showed that while MIMO
can be used with other popular air interfaces such as time division multiple access (
patriot.prakash 6 0
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CODE DIVISION MUTIPLE ACCES
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Code division multiple access ( CDMA ) is a channel access method used by various radio communication technologies.
CDMA is an example of multiple access ,
which is where several transmitters can send information simultaneously
over a single communication channel. This allows several users to share
a band of frequencies (see bandwidth ). To permit this to be achieved without undue interference between the users, CDMA employs spread-spectrum technology and a special coding scheme (w
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