Radio communication device and sequence length adjusting method

A radio communication apparatus comprising:

• an adjuster configured to specify each location of one or more symbols to be extended among a plurality of symbols comprising a generalized chirp-like sequence according to a number of the one or more symbols to be extended and adjust a sequence length of the generalized chirp-like sequence by extending the determined one or more symbols;
• and
• a transmitter configured to transmit the adjusted generalized chirp-like sequence,
• wherein when the number of symbols to be extended is even-numbered, the adjuster extends symbols located at even intervals before and after the symbol located in the center, among the plurality of symbols.

A radio communication apparatus comprising:

• an adjuster configured to specify each location of one or more symbols to be extended among a plurality of symbols comprising a generalized chirp-like sequence according to a number of the one or more symbols to be extended and adjust a sequence length of the generalized chirp-like sequence by extending the determined one or more symbols;
• a transmitter configured to transmit the adjusted generalized chirp-like sequence;
• and
• a setting section configured to set parameters of the generalized chirp-like sequence such that the one or more symbols to be extended by the adjuster is located at an end of the generalized chirp-like sequence.

A sequence length adjusting method comprising:

• specifying, by an adjuster, each location of one or more symbols to be extended among a plurality of symbols comprising a generalized chirp-like sequence according to a number of the one or more symbols to be extended;
• adjusting, by the adjuster, a sequence length of the generalized chirp-like sequence by extending the determined one or more symbols;
• and
• transmitting, by a transmitter, the adjusted generalized chirp-like sequence,
• wherein when the number of symbols to be extended is one, extending, by the adjuster, the symbol located in a center, among the plurality of symbols, a symbol newly generated by extending the symbol located in a center being located at a position neighboring the extended symbol in the adjusted generalized chirp-like sequence.