Wireless relay transmission realization optimization method based on USRPN200

An optimization method and wireless relay technology, applied in the directions of radio transmission system, transmission system, wireless communication, etc., can solve the problem of limited transmission capacity, and achieve the effect of effective and correct transmission, improving reliability, and optimizing coverage.
CN108233993AActive Publication Date: 2018-06-29NANJING UNIV OF POSTS & TELECOMM
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING UNIV OF POSTS & TELECOMM
Publication Date
2018-06-29

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Abstract

The invention discloses a wireless relay transmission realization method based on USRPN200. The method is suitable for multimedia data transmission of different types. This transmission technology hasbeen realized on a USRP platform, the signal processing and the time synchronization is generated in the GNU Radio environment, the resource and power sharing is realized among multiple nodes, the multi-path fading is overcome, and the virtual MIMO is realized. In the indoor environment, the multi-hop network is replaced with the cooperative relaying, the modulation is performed by using Gaussianminimum frequency-shift keying, the network design adopts a decoding forwarding scheme, the frequency phase-locked loop and the Costas loop are used for eliminating the frequency offset and the phasefrequency-shift. The synchronization among multiple relay nodes is realized by using a flow label in the GNU Radio, the transcripts transmitted by multiple relay signals are combined by using equal gain ratio combination at a destination node of the cooperative communication.
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Description

technical field

[0001] The invention belongs to the technical field of software radio information transmission, and in particular relates to a USRPN200-based wireless relay transmission realization optimization method. Background technique

[0002] In recent years, while the rapid development of mobile Internet communication technology facilitates people's lives, the coexistence of multiple communication systems and the emergence of communication standards have caused difficulties in realizing regional roaming and compatibility and inheritance of different communication systems. These communication standards limit the intercommunication and compatibility of various hardware devices due to different radio frequency carrier frequencies and modulation methods, resulting in waste and investment. Traditional communication systems based on hardware are difficult to meet this status quo. And software defined radio technology (SDR) can fundamentally solve these problems. Software D...

Claims

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