Receiver and wireless communication apparatus

Abstract

The embodiment of the invention provides a receiver and a wireless communication apparatus. The receiver comprises an attenuation circuit used for receiving input signals and obtaining first signals according to the input signals; a low-noise amplification circuit used for receiving the first signals and obtaining second signals according to the first signals; an quadrature down-conversion circuit used for receiving and processing the second signals and obtaining output signals; and a control circuit used for controlling the attenuation circuit and the low-noise amplification circuit according to the power of interference signals included in the output signals in order to determine whether the attenuation circuit attenuates the input signals and whether the low-noise amplification circuit amplifies the first signals. According to the receiver and the wireless communication apparatus, a controller can enable the receiver to be in different work modes according to different blocking scenes, and the requirements of noise and linearity in different scenes of the receiver are met.

Description

technical field [0001] The present invention relates to the communication field, and more specifically, to a receiver and a wireless communication device in the communication field. Background technique [0002] Indoor coverage and outdoor coverage in hot spots will become the main requirements for wireless network coverage in the 5G era. At this time, small stations and massive multiple-input multiple-output (Massive MIMO) will become the main solutions. Small cells and Massive MIMO products both use a radio on chip (Radio on Chip, ROC) chip to receive and send signals. [0003] On the one hand, among the performance indicators of wireless base stations, static sensitivity is an important parameter to ensure network coverage. For ROC chips, it is necessary to reduce the noise of the receiving link. On the other hand, the number of users is increasing, and interference scenarios are becoming more and more complex. The receiving link needs to ensure a certain receiving sign...

AI Technical Summary

Problems solved by technology

[0004] However, the dynamic range of the receiving link of the current ROC chip is small, and it is impossible to balance the static sensitivity at low blocking and the blocking sensitivity at medium and high blocking

And in order to optimize the static sensitivity under low blocking, it is necessary to add an LNA with high linearity requirements and high power consumption in front of the chip to optimize the noise, which is costly

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