Patent ID: 8605802

Claim:
An apparatus for fast wireless communication, the apparatus comprising: a frame configuration unit that configures a frame including transmission data, including configuring a short symbol giving notification about a start of a fast wireless communication frame, configures a long symbol estimating a channel which transmits the fast wireless communication frame, configures a signal symbol demodulating the fast wireless communication frame, and configures a data symbol of transmission data to be transmitted via the fast wireless communication frame; a demultiplexing unit that demultiplexes the transmission data included in the frame into N number of parallel streams, wherein N is a positive number greater than 2; N number of coding and modulation units connected in parallel that performs error correction coding and orthogonal frequency division multiplexing (OFDM) with respect to each of the N number of parallel streams and output N number of parallel coded and modulated streams; and a multiplexing unit that multiplexes the N number of parallel coded and modulated streams into a single serial stream; wherein the short symbol generates 512 complex numbers using a value corresponding to a subcarrier index shown in the following table, and generates the 512 complex numbers by performing IFFT (Inverse Fast Fourier Transform), SUBCARRIER INDEX VALUES −196 1 −164 −1 −180 1 −148 −1 −132 1 −116 1 −100 1 −84 −1 −68 1 −60 1 −44 −1 −28 −1 −12 −1 4 −1 20 −1 36 1 52 1 72 −1 88 1 104 −1 120 −1 136 1 152 −1 168 −1 184 −1 192 −1.