Signal processing apparatus and method
摘要
說(shuō)明書(shū)
The CRC adding unit 111 adds, to a payload (PAYLOAD) which is a copy of the weather observation data TM supplied from the weather observation apparatus 31, a frame check sequence (FCS) obtained by a computation for this payload, and supplies the resultant to the selection unit 113. Each of the weather observation data TM, which is transmitted as the payload (PAYLOAD), and the frame check sequence (FCS) is information that cannot be inferred in advance on the receiver side. Such information that is “unknown” on the receiver side will be referred to as UND (UNknown Data). While the UND is formed by 6-octet information in the example of
The synchronization signal generation unit 112 generates, as the synchronization pattern (SYNC), information of the preamble, the SFD, the frame control, the sequence number, and the transmitter and receiver addresses, for example, and supplies it to the selection unit 113. This synchronization pattern (SYNC) is information that does not depend on the weather observation data TM, and is known information for the reception apparatus. While the synchronization pattern is formed by 13-octet information in the example of
