Filter bank multicarrier modulation system and design method thereof

Abstract

The invention provides a filter bank multicarrier modulation system and a design method thereof. According to the design requirement of the system, a prototype filter is determined, the prototype filter shifts on an angular frequency axis to obtain an integrated filter bank of a sending terminal, and an analysis filter bank of a receiving terminal satisfies a time domain complete reconstruction condition. Compared with the traditional frequency domain design, according to the system and method, a constraint condition that an integrated filter bank is the conjugate transpose of an analysis filter bank in the traditional filter bank multicarrier modulator is abandoned, and the integrated filter bank can be freely designed according to the design requirement of the system. According to the multicarrier modulator in the invention, while the reconstruction condition is completely satisfied, the modulator still has a very high frequency resolution and is especially suitable for being applied in a communication system with a strict frequency resolution requirement.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a filter bank multi-carrier frequency modulation system. Background technique [0002] With the advent of the multimedia information age, wireless communication technology has penetrated into all aspects of social life. The demand for communication services based on video, images, and data is gradually increasing, and the traditional mobile communication network mainly based on voice communication has been unable to meet people's increasing consumption needs. In order to meet the high-speed broadband data communication requirements, future wireless communication systems must have anti-multipath interference capabilities and high spectrum utilization. [0003] In the wireless transmission process of the signal, due to the multipath transmission of the wireless channel, the signal received by the receiving end is the superposition of transmission signals of different paths. S...

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Problems solved by technology

[0007] In view of this, the technical problem to be solved by the present invention is to address the defect that the prior art filter bank does not have high stop band attenuation or high frequency resolution characteristics, and cannot be applied to applications with higher requirements for this characteristic , the present invention proposes a filter bank multi-carrier frequency modulation system

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