Patent ID: 11894962
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. A transmitter for transmitting an Orthogonal Frequency Division Multiplex, OFDM, symbol via a channel, the OFDM symbol comprising a guard interval including a cyclically repeated part of an original symbol OFDM symbol, the transmitter comprising:
a transformer configured to transform a series of frequency domain data symbols into a burst of time domain symbols forming the original OFDM symbol;
a symbol former configured to append to the time domain burst a first part of the guard interval for the OFDM symbol by duplication of a segment of the time domain burst, include an indication whether the guard interval further comprises a second part which is an extended guard interval part in relation to the first part of the guard interval, where the second part includes a repeated part in addition to the first part, and append the second part, when indicated, to the time domain burst; and
transmitter circuitry configured to transmit the formed OFDM symbol.