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- What is channel in OFDM?
- What is channel estimation in MIMO OFDM?
- What is a characteristic of OFDM channel subcarriers?
- Which modulation technique is used in OFDM?
What is channel in OFDM?
OFDM is a subset of frequency division multiplexing in which a single channel utilizes multiple sub-carriers on adjacent frequencies. In addition the sub-carriers in an OFDM system are overlapping to maximize spectral efficiency. Ordinarily, overlapping adjacent channels can interfere with one another.
What is channel estimation in MIMO OFDM?
The channel estimation is carried out with conventional Least Square (LS) and Minimum Mean Square (MMSE) estimation algorithms. The performance of MIMO-OFDM system is evaluated on the basis of Bit Error Rate (BER) and Mean Square Error (MSE) level.
What is a characteristic of OFDM channel subcarriers?
Key features of OFDM
Multiple carriers (called subcarriers) carry the information stream. The subcarriers are orthogonal to each other. A guard interval is added to each symbol to minimize the channel delay spread and intersymbol interference.
Which modulation technique is used in OFDM?
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.
