SYSTEM FOR MULTIPLE INPUT MULTIPLE OUTPUT OF SPACE-TIME CODING USING ORTHOGONAL SEQUENCE

• Main Authors: KIM, YOUNG IL, AHN, JEE HWAN, SONG, SEOG ILL
• Format: Patent
• Language: English
• Published: 05.06.2008
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; MULTIPLEX COMMUNICATION; TRANSMISSION

A MIMO(Multi-Input Multi-Output) system of space-time codes using an orthogonal sequence is provided to solve a problem that if there are three or more transmission antennas, space-time codes maintaining orthogonality cannot satisfy a maximum transmission rate, and a decoding complexity is high. A plurality of transmission processors(102) correspond to a plurality of transmission antennas(103). A serial/parallel conversion unit(101) space-time codes input data to generate parallel data corresponding to the plural transmission processors. A real number component processor(110) orthogonal-coding-processes real number component data of corresponding among the parallel data from the serial/parallel conversion unit. An imaginary number component processor(120) orthogonal-coding-processes imaginary number component data of corresponding data among the parallel data from the serial/parallel conversion unit. A synthesizing unit(130) synthesizes output data of the real number component processor and the imaginary number component processor in order to transmit the same via a corresponding transmission antenna. Mappers(111,121) generate a real number component and an imaginary number component of the data, which are inputted through the serial/parallel conversion unit, in non-binary signal value.