Broadband asynchronous adjustable multi-carrier wireless transmission method and system supporting multi-antenna transmission

A multi-antenna transmission and wireless transmission technology, applied in the modulation carrier system, radio transmission system, diversity/multi-antenna system, etc., can solve the problems of limited spectrum use flexibility, large carrier sidelobe, sensitivity to frequency offset, etc., to achieve Avoid the effects of matrix inversion operations

CN105306118AActive Publication Date: 2016-02-03SOUTHEAST UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2016-02-03

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Abstract

The invention discloses a broadband asynchronous adjustable multi-carrier wireless transmission method supporting a multi-antenna transmission. The method comprises a signal transmission step and a signal receiving step. The invention also discloses a broadband asynchronous adjustable multi-carrier wireless transmission system supporting the multi-antenna transmission. The system comprises a transmission end and a receiving end, wherein the transmission end comprises a sub-band baseband transmission module, a multi-carrier synthesis module, a D / A module, a transmission radio-frequency module and a reflecting antenna; and the receiving end comprises a receiving antenna, a reception radio-frequency module, an A / D module, a multi-carrier analysis module and a sub-band baseband receiving module. Through adoption of the method and the system, spectrum allocation is performed flexibly under a larger bandwidth on the basis of keeping the advantages of OFDM (Orthogonal Frequency Division Multiplexing); asynchronous transmission is realized; the spectrum utilization ratio is increased; the peak-to-average ratio is lowered; frequency offsets are effectively resisted; carrier side lobes are reduced; and radio resources are saved.
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Description

technical field

[0001] The invention relates to the field of wireless communication, in particular to a wideband asynchronous adjustable multi-carrier wireless transmission method and system supporting multi-antenna transmission. Background technique

[0002] In order to meet the needs of communication development, the next-generation wireless communication system must have higher spectrum utilization and energy efficiency on the basis of increasing data transmission speed, and its wireless coverage performance, transmission delay and user experience have been significantly improved. The system supports the communication requirements of different businesses, especially massive sensing devices and machine-to-machine (M2M) communication. The system also needs to have sufficient flexibility to integrate and dynamically allocate spectrum resources.

[0003] Multi-antenna (MIMO) combined with multi-carrier parallel transmission technology is the key to the development of next-ge...

Examples

Embodiment Construction

[0044] The technical solution of the present invention will be further introduced below in combination with specific embodiments.

[0045] The system of the present invention includes a sending end and a receiving end.

[0046] sender such as figure 1 As shown, it includes sub-band baseband transmission module, multi-carrier synthesis module, D / A module, transmission radio frequency module and reflective antenna. The S parallel transmission data streams of different users or the same user are respectively processed by corresponding sub-band baseband transmission modules for baseband digital signal processing (such as: channel coding, interleaving, modulation, etc.), to obtain sub-band multi-antenna digital baseband transmission signals; Then, multi-carrier synthesis is performed through the multi-carrier synthesis module to generate multi-carrier digital baseband transmission signals; finally, multi-carrier transmission radio frequency signals on each transmitting antenna are...