Wired spread spectrum communication device, a method for communication thereof, and a wired spread spectrum communication system

A wired spread spectrum communication device which receives received signals including information signals that have been spread by spreading codes from transmission paths, the wired spread spectrum communication device comprising

• a correlator means which obtains correlations between the received signals that have been received from the transmission paths and specified spreading codes owned by sync signals that have been superposed to the received signals and extracting the sync signals,
• a back-spreading code generating means which generates back-spread spectrum signals that are capable of demodulating information signals on the basis of the sync signals that have been extracted by the correlator means, and
• a demodulator means which performs back-spread of the received signals on the basis of the back-spread spectrum signal codes as generated by the back-spreading code generating means and which demodulates the information signals.

A wired spread spectrum communication method in which information signals that have been spread by spreading codes are transmitted through transmission paths, the wired spread spectrum communication method including the steps of outputting spread spectrum signals that have been generated on the basis of specified spreading codes at specified timings as sync signals, superposing the sync signals to the information signals and transmitting them out to the transmission paths.

A wired spread spectrum communication method in which received signals including information signals that have been spread by spreading codes are received from transmission paths, the wired spread spectrum communication method including the steps of generating, on the basis of sync signals extracted by obtaining correlations between the received signals that have been received from the transmission paths and specified spreading codes owned by sync signals that have been superposed to the received signals, back-spread spectrum signals that are capable of demodulating information signals, and performing back-spread of the received signals on the basis of the back-spread spectrum signal codes for demodulating the information signals.

A wired spread spectrum communication system which communicates information signals that have been spread by spreading codes to transmission paths, the wired spread spectrum communication system comprising

• a transmitting device which outputs spread spectrum signals generated on the basis of specified spreading codes at specified timings as sync signals and which superposes the sync signals to the information signals for transmitting them out to the transmission paths, and
• a receiving device which generates, on the basis of sync signals extracted by obtaining correlations between the received signals that have been received from the transmission paths and specified spreading codes owned by sync signals that have been superposed to the received signals, back-spread spectrum signals that are capable of demodulating information signals, and which performs back-spread of the received signals on the basis of the back-spread spectrum signal for demodulating the information signals.