Frame structure for fast wireless communication system and apparatus for fast wireless communication using the frame

A method for configuring a frame for fast wireless communication, the method comprising:

• configuring a short symbol giving notification about a start of a fast wireless communication frame;
• configuring a long symbol estimating a channel which transmits the fast wireless communication frame;
• configuring a signal symbol demodulating the fast wireless communication frame;
• and
• configuring a data symbol of transmission data to be transmitted via the fast wireless communication frame, 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
• wherein the real parts and imaginary parts of the 512 complex numbers are identical.

An apparatus for fast wireless communication, the apparatus comprising:

• a preamble processing unit that performs a preamble process to down-sample a received signal four times, to detect a subcarrier and a frequency offset, and to synchronize a frame;
• 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 transmission data included in the received signal into N number of parallel streams, wherein N is a positive number greater than 2;
• N number of demodulation and decoding units connected in parallel that performs OFDM (orthogonal frequency division multiplexing) and error correction with respect to each of the N number of parallel streams and outputting N number of parallel decoded and demodulated 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.