Patent ID: 7474609
Filing Date: 2009-01-06
Classification: H04B,H04L

Abstract:
1. A frequency-division multiplexing transmitting apparatus for sending and receiving data by a frequency spectrum specific to a mobile station, comprising: symbol compression and repetition unit for compressing a time domain of each symbol of a transmit symbol sequence, repeating the symbol a prescribed number of times (L times) and rearranging the symbols of the obtained repetitive symbol sequence in such a manner that the symbols will have an arrangement identical with the arrangement of the transmit symbol sequence; a phase rotating unit for subjecting each symbol of the repetitive symbol sequence after the rearrangement thereof to phase rotation that varies at a speed specific to the mobile station; and a transmitting unit for transmitting the symbols that have undergone the phase rotation; wherein said phase rotating unit varies the amount of phase rotation, which is applied to each symbol of the repetitive symbols, in increments of k·2π/L (where k represents an integer specific to the mobile station) at the period of the repetitive symbol sequence.