Howtosignalprocessing
- What is pilot symbol in wireless communication?
- What are pilot symbols in OFDM?
- What is pilot subcarrier?
- What is preamble in OFDM?
What is pilot symbol in wireless communication?
The pilot symbols are constructed to be nonoverlapping in frequency to allow simultaneous sounding of the multiple channels. The time- varying channel responses are tracked by interpolating a set of estimates obtained through periodically transmitted pilot symbols.
What are pilot symbols in OFDM?
Training OFDM symbols or equivalently OFDM preambles are transmitted at the beginning of the transmission record, while pilot symbols (complex exponentials in time) are embedded in each OFDM symbol, and they are separated from information symbols in the frequency-domain [1–3].
What is pilot subcarrier?
Pilot subcarrier. A subcarrier that serves as a control signal for use in the reception of FM stereophonic sound broadcasts.
What is preamble in OFDM?
The preambles are BPSK modulated at 6 Mbps. They contain no channel coding, and are not scrambled. The third region of the frame is the Signal field, which consists of one OFDM symbol assigned to all 52 subcarriers. This symbol is BPSK modulated at 6 Mbps and is encoded at a ½ rate. The Signal field is not scrambled.
