Wireless receiver applicable to ultra-large dynamic range under wireless communication system

Abstract

The invention discloses a wireless receiver applicable to an ultra-large dynamic range under a wireless communication system, wherein a carrier balance unit further comprises an energy self-adaptive gain control module and an energy calculation module, and the energy self-adaptive gain control module carries out regulation on the amplitude of intermediate frequency signals outputted by an analog frequency down conversion unit according to the average sampling signal amplitude outputted by a digital frequency down conversion unit calculated by the energy calculation unit. The wireless receiver further adds the energy self-adaptive gain control unit and a digital automatic gain control unit on the basis of a radio frequency automatic gain controller of the wireless receiver of the prior art, thereby realizing the demodulation of the received signals in the ultra-high dynamic range through the cooperative work and simultaneously meeting the requirement on high sensitivity. The energy self-adaptive gain control unit is utilized for controlling the amplitude of the signals inputted into a signal sampling unit, thereby minimizing the noise floor of the system and avoiding negative impacts on the signal-to-noise ratio of the received signals.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a wireless receiver suitable for a super large dynamic range under a wireless communication system. Background technique [0002] In a broadband wireless communication system, the received signal energy changes with the propagation distance. In addition to being interfered by various noises, the multipath propagation of the transmitted signal also affects data transmission. As the transmission rate increases, the higher and higher transmission bandwidth causes serious time dispersion, and the received signal contains multipath waves that undergo attenuation and delay, causing frequency selective fading, so the signal strength received by the antenna changes very big. [0003] Existing wireless receivers generally include a receiving antenna, a radio frequency automatic gain control module, an analog down-conversion module, a signal sampling module, a digital down-...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a wireless receiver suitable for a super-large dynamic range in a wireless communication system, which overcomes that the wireless receiver in the prior art cannot receive signals in a super-high dynamic range and it is difficult to reduce the noise floor of the receiving end Defects

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