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OFDM Matlab Code
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Orthogonal Frequency Division Multiplexing (OFDM) merupakan teknik mudulasi untuk komunikasi wireless broadband dimasa yang akan datang karena tahan melawan frekuensi
selective fading dan interferensi narrowband dan efisien menghadapi
multi-path delay spread. Untuk mencapai hal tersebut, OFDM membagi
aliran data high-rate mejadi aliran rate yang lebih rendah, yang
kemudian dikirimkan secara bersama pada beberapa sub-carrier[1].
Dengan melakukan hal tersebut , durasi symbol meningkat. Keuntungan
dari hal tersebut adalah jumlah dispersi waktu yang disebabkan oleh
multi-path delay spread menurun secara signifikan. Selain itu,
pengenalan g
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Orthogonal Frequency Division Modulation
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Orthogonal frequency-division multiplexing ( OFDM ) is a method of encoding digital data on multiple carrier frequencies. OFDM has developed into a popular scheme for wideband digital communication , whether wireless or over copper wires, used in applications such as digital television and audio broadcasting, DSL Internet access , wireless networks, and 4G mobile communications.
OFDM is essentially identical to
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Modulation Explanations and Matlab Code
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One way to communicate a message signal whose frequency spectrum does not fall
within that fixed frequency range, or one that is otherwise unsuitable for the channel, is to
change a transmittable signal according to the information in the message signal. This
alteration is called modulation, and it is the modulated signal that is transmitted. The
receiver then recovers the original signal through a process called demodulation.
Modulation is a process by which a carrier signal is altered according to information in a
message signal. The carrier frequency, denoted Fc, is the frequency of the carrier signal.
The sampling rate, Fs, is the rate at which the message signal is sampled during the
simulation.
The frequency of the carrier signal is usually much greater than the highest frequency of
the input message signal. The Nyquist sampling theorem requires that the simulation
sampling rate Fs be greater than two ti
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