Patent ID: 9735830
Date: 2017-08-15
CPC Classifications: H04B,H04J,H04L

Claim:
1. A transmission signal generating/detecting method using code sequences, comprising: generating a multiplexing-spread chip sequence with a multiplicity being equal to or larger than “1” by multiplexing single or a plurality of spread chip sequences each of which is formed in a way that multiplies a spreading-purpose code sequence which includes a sequence to which data are mapped and a chip of a coupling-purpose code sequence and a chip of a localizing-purpose code sequence together with respect to the chip or the chips of the coupling-purpose code sequence, generating transmission signals on the basis of transform signals generated by transforming at least a single multiplexing-spread chip sequence or a plurality of multiplexing-spread chip sequences and transmitting the generated transmission signals; and acquiring the multiplexing-spread chip sequence in a time domain or a frequency domain from the transform signals by detecting the transmission signals, multiplying the acquired multiplexing-spread chip sequence by the spreading-purpose code sequence, and detecting at least one of the maximum localization pulse of the coupling-purpose code sequence and the maximum localization pulse of the localizing-purpose code sequence from the multiplied signals, wherein the transmission signal contains a preamble configured to include the code sequences having two or more periods, a delay wave superposed on the detected transmission signal is removed based on the preamble, and the multiplexing-spread chip sequence in the time domain or the frequency domain is acquired from the detection signal from which the delay wave is removed.