COMMUNICATION METHOD, COMMUNICATION SYSTEM, AND RECEIVER

摘要

PROBLEM TO BE SOLVED: To provide a communication technology capable of accurately demodulating a symbol sequence even under a time-varying multi-path fading environment. SOLUTION: A communication method comprises: an STBC-coding step for dividing a transmit symbol sequence X into blocks and generating two mutually orthogonal symbol sequences XnAand XnBbased on a symbol sequence Xnof each block; a transmitting step for modulating each of the symbol sequences XnAand XnBby an OFDM system and transmitting it by a transmitter diversity system; an OFDM demodulating step for demodulating a receive signal by applying discrete Fourier transform thereto, and generating a receive symbol sequence Rn; and an STBC demodulating step for demodulating a symbol sequence Xn' of each block by using a receive symbol sequence Rnfor an inverse matrix H-1of a transfer function matrix H, constituted based on a transfer function estimated for each block and for each sub-carrier by a prescribed estimation method, and by which the receive symbol sequence Rnis related to the symbol sequence Xn. COPYRIGHT: (C)2007,JPO&INPIT