Patent ID: 9014234
Filing Date: 2015-04-21
Classification: H04B

Abstract:
1. A communication system, comprising: a first communication apparatus configured to perform frequency conversion of communication data, which includes at least first and second known synchronization symbols subjected to spread modulation with a spread code, into a first frequency, and to transmit the communication data; and a second communication apparatus configured to perform frequency conversion of received communication data into a second frequency, and then to perform processing for detecting a synchronization timing, based on a plurality of correlation values arranged along a time series, each of which is a correlation value between the communication data and a reference signal that includes a known synchronization symbol, wherein the first communication apparatus comprises: a disturbing wave detection part configured to detect information relevant to a period of a disturbing wave in which the frequency conversion into the second frequency has been performed; a communication control part configured to set a transmission period between a timing of transmitting the first known synchronization symbol and a timing of transmitting the second known synchronization symbol in the second frequency to be integer multiple of the period of a detected disturbing wave; and a transmission unit configured to transmit the communication data in which the transmission period has been set by the communication control part.