摘要 |
To produce a symbol frame waveform, a transmitter (TX) uses a reference signal wave of orthogonal code sequence whose auto-correlation function takes 0 at any shift except the 0 shift, and generates a transmitting symbol frame which is made by modulating the reference signal wave with transmitting information. A receiver (RX) applies the received frame waveform containing the transmitted signal wave and a noise component to a matched filter (34) for obtaining the cross-correlation function with the reference signal wave, and analyzes the partial cross-correlation function at the uncorrelated region. Thus, the reference signal wave component contained in the received frame waveform can be detected with little influence of noise by estimating the noise-dependent cross-correlation function to be obtained when only the noise component is applied to the matched filter (34), and by removing the estimated function from the cross-correlation function. <IMAGE> <IMAGE> |
申请人 |
KUROYANAGI, NORIYOSHI;SUEHIRO, NAOKI;FUJI ELECTRIC CO., LTD. |
发明人 |
KUROYANAGI, NORIYOSHI;SUEHIRO, NAOKI;OTAKE, KOHEI;MATSUFUJI, SHINYA;OZAWA, SATORU;SHIBATANI, MASAO;KONDO, SHIRO;YASUKAWA, KAZUYUKI |