METHOD AND DEVICE OF TRANSMITTING AN OFDM SIGNAL

摘要

A method of transmitting a number of parallel sequences of original data symbols includes modulating the parallel sequences on to respective orthogonal sub-carriers by applying a discrete inverse transform to each original data symbol to obtain a corresponding number of parallel symbol sequences, each symbol (14, 16) having a length corresponding to a number of samples in an original data symbol. The method further includes generating one of a corresponding number of parallel signals from each symbol sequence, each of the parallel signals being partitioned into symbol periods (?T1-AT4 ) of a generally equal length corresponding to at least the length of one symbol (14, 16). At least one symbol period [?T2, ?T4) consisting of at least part of a padding sequence (15,17) is included adjacent a symbol period [?T1, ?T3) including one of the symbols (14, 16) in at least one of the parallel signals.