Orthogonal Frequency Division Multiplexing (OFDM) is another widely used modulation method used to achieve high data rates and spectral efficiency . It is known as a multicarrier modulation method as many carriers are used instead of just one.
Read moreWhy QAM is used in OFDM?
Each of the subcarriers is modulated using QAM. These modulated subcarriers can be used to support independent baseband signals but more typically they are combined to provide the maximum data throughput for one stream of data. Figure 2. An OFDM modulator sums signals of different frequencies.16 Nis 2020
Read moreWhat is OFDM in GSM?
OFDM is a form of multicarrier modulation . An OFDM signal consists of a number of closely spaced modulated carriers. When modulation of any form – voice, data, etc. is applied to a carrier, then sidebands spread out either side.
Read moreWhat is OFDM and how it works?
OFDM: Orthogonal Frequency Division Multiplexing, is a form of signal modulation that divides a high data rate modulating stream placing them onto many slowly modulated narrowband close-spaced subcarriers , and in this way is less sensitive to frequency selective fading.
Read moreWhat is the main advantage of OFDM?
The main benefit of OFDM over single-carrier schemes is its ability to cope with severe channel conditions without complex equalization filters . It has improved the quality of long-distance communication by eliminating InterSymbol Interference (ISI) and improving Signal-to-Noise ratio (SNR).
Read moreHow OFDM is implemented?
Simple Analog OFDM system Implementation Each subcarrier transmits one bit of information (N bits total) as indicated by its presence or absence in the output spectrum . The frequency of each subcarrier is selected to form an orthogonal signal set. These frequencies are also known at the receiver for signal recovery.
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