Wireless communication method of physical layer network coding based on multi-frequency-shift keying (MFSK) modulation mode

Abstract

The invention discloses a wireless communication method of physical layer network coding based on a multi-frequency-shift keying (MFSK) modulation mode, and relates to the field of wireless communication. The wireless communication method of the physical layer network coding based on the MFSK mode improves the performance of a wireless communication system through the time slot number of compressed data communication. According to the wireless communication method, the encoded bit information transmitted by two user nodes is respectively modulated in an MFSK mode and is simultaneously transmitted to relay nodes, total signals are obtained by the addition of the relay nodes, are judged and mapped as the bit information of network encoding, the bit information is modulated in an MFSK mode and broadcasted to the two user nodes, the two user nodes respectively demodulate the broadcast modulation signals and respectively output corresponding modulation signals saved in a local cache after bitwise or calculation, and therefore the wireless communication method of the physical layer network coding based on the MFSK mode is realized. The wireless communication method of the physical layer network coding based on the MFSK mode is suitable for wireless communication of the physical layer network coding based on the MFSK mode.

Description

technical field [0001] The invention relates to the field of wireless communication. Background technique [0002] Since Cai et al. proposed Network Coding (Network Coding, NC) technology, network coding has become an effective means to increase network throughput, enhance robustness, improve system load balancing and security, and has been widely recognized by academics and researchers. Attention, many very important results have been obtained both in theory and in practical applications. [0003] For example, when a receiving node receives signals sent by multiple sending nodes at the same time slot, they will interfere with each other, which is a huge challenge for traditional 802.11 networks. Traditional transmission methods generally use Appropriate scheduling strategies minimize or avoid such interference. Obviously, when there are multiple nodes in the system exchanging information, the efficiency of using this method is quite low. The network coding technology cre...

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Problems solved by technology

[0007] Whether at home or abroad, there is still relatively little research on physical layer network coding based on frequency shift keying modulation, and there is still a lack of understanding of the performance of PNC based on frequency shift keying modulation

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