Patent ID: 8306130

Claim:
A transmission method of a time frequency interleaved-orthogonal frequency division multiplexing (TFI-OFDM) transmission system for ultra wide band (UWB) communication, comprising: (a) generating data having a speed corresponding to a transmission speed mode; (b) convolutional-encoding the data into a number of data groups; (c) bit-interleaving the convolutional-encoded data to generate interleaved data groups; (d) outputting OFDM symbols by acquiring a complex conjugate for each of the interleaved data groups and executing an inverse fast Fourier transform (IFFT) on the interleaved data groups to correspond to positive and negative frequency domains together with the complex conjugates in a predetermined manner; and (e) sequentially transmitting the OFDM symbols in a pattern of different continuative frequency bands at least two times; wherein the OFDM symbol contains a predetermined data group in a positive frequency band and a copy of the predetermined data group in a negative frequency band; wherein the pattern of different continuative frequency bands comprises a first frequency band and a second frequency band that is continuous with the first frequency band within the pattern.