A SENDING AND RECEIVING METHOD, DEVICE BASED ON OFDM

摘要

A signal-sending method based on OFDM is disclosed and it includes: Divide signal into two parts at least. Map each part of the signal into an orthogonal code. Make pre-disposal to the orthogonal code and then send it out. Additionally, a signal-receiving method based on OFDM is also disclosed and it includes: Make pre-disposal to the received signal and recover channel signals including orthogonal code. Divide these channel signals into several parts according to mapping rule which is used as the signal is sent. Make corresponding disposal and error correction code decoding to these parts in combination. At the same time, a sending and receiving device based on OFDM is disclosed also. The sending and receiving system based on OFDM according to this invention wins stronger anti-jamming ability by improving the orthogonality among received spreading signal.