Patent ID: 8665696

Claim:
A receiver operable to: receive a first orthogonal frequency division multiplex (OFDM) symbol, the first OFDM symbol being expressed by superpositions of a set of sub-carriers which are orthogonal over a time T, wherein the duration of the first OFDM symbol is T and the first OFDM symbol is associated with a first guard time having a length of T G ; and receive a second OFDM symbol, the second OFDM symbol expressed by superpositions of the same set of sub-carriers used to express the first OFDM symbol, the second OFDM symbol being the next OFDM symbol after or the previous OFDM symbol before the first OFDM symbol in a sequence of OFDM symbols, wherein the duration of the second OFDM symbol is KT and the second OFDM symbol is associated with a second guard time having a length of KT G , where K is a positive integer greater than one.