Grouping index OFDM communication method based on combination of message and random sequence
A technology of random sequence and communication method, applied in the direction of digital transmission system, electrical components, modulated carrier system, etc., can solve the problems of reducing anti-interference performance, spectrum efficiency, poor anti-interception performance, etc., and achieve the effect of improving anti-interception performance
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[0031] The present invention will be further described below in conjunction with the accompanying drawings.
[0032] It should be reminded that the described embodiments are only some of the embodiments of the present invention, but not all of the embodiments. The invention relates to a group index OFDM communication technology based on the combination of a random sequence and a message, belonging to the technical field of wireless communication. The principle of the packet SIM-OFDM communication technology based on the combination of random sequence and message is to activate some subcarriers of each carrier block in each OFDM symbol to transmit modulation symbols by using a combination of message drive and random sequence drive, while other subcarriers remain silent. State, using the randomness of a PN sequence causes the relationship between the index bit and the distribution of the active carrier to also change randomly, making the index bit information more concealed. Th...
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