Nonorthogonal multi-carrier transmission method

Abstract

The invention discloses a nonorthogonal multi-carrier transmission method. The transmission method is based on a compressive sensing theory, and comprises the following steps of: expanding mutually orthogonal sub-carriers in an OFDM system into nonorthogonal sub-carriers with different sampling start time on a plurality of time domains; combining transmission of the plurality of nonorthogonal sub-carriers with compressive sensing, thus allowing signals mapped to the nonorthogonal sub-carriers to be sparse, and acquiring the mapped signals; and recovering the original signals at a receiving end via a restructing algorithm. According to the method provided by the invention, a total spectral bandwidth occupied by the carriers is reduced by nonorthogonality among the carriers at a same symbol rate, and spectrum efficiency of the nonorthogonal multi-carrier system is improved.

Description

technical field

[0001] The invention relates to the field of multi-carrier transmission in the wireless communication field, in particular to a non-orthogonal multi-carrier transmission method. Background technique

[0002] In response to emerging new business and application scenarios, the fifth generation mobile communication (5G) system is in full swing, requiring multi-carrier transmission systems to achieve higher spectrum utilization and energy efficiency, so OFDM technology is no longer suitable for 5G surroundings.

[0003] To this end, researchers have proposed a variety of non-orthogonal multi-carrier transmission technologies as alternatives for 5G, among which filter bank multi-carrier (FBMC), universal filter multi-carrier (UFMC), and generalized frequency division multiplexing (GFDM) are Currently the most discussed multi-carrier transmission technology in the industry, the above three non-orthogonal multi-carrier transmission technologies are all based on fil...

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