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AssigneeRealtek Semiconductor Corp.
InventorsChien-Wei Hsin, Chung-Yao Chang
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A wireless LAN communication device includes an amplifying circuit, an interference detection circuit, a false alarm counting circuit, and a control circuit. The amplifying circuit is configured to operably provide a gain to wireless signals. The interference detection circuit is configured to operably detect adjacent channel interference signals to generate a detection result. The false alarm counting circuit is configured to operably calculate a number of false alarms incurred by the adjacent channel interference signals. The control circuit is configured to operably configure the gain of the amplifying circuit according to the detection result and the number of false alarms.
A wireless LAN communication device, comprising:
A wireless LAN communication device, configured to operably associate with a first access point, comprising:
A signal processing circuit of a wireless LAN communication device, configured to operably configure a gain which an amplifying circuit of the wireless LAN communication device provides to a wireless signal, comprising:
A signal processing method for a wireless LAN communication device, comprising:
Dependencies are inferred from the claim text.
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Receivers: means associated with receiver for limiting or suppressing noise or interference
Assessing signal quality or detecting noise/interference for the received signal: with automatic suppression of narrow band noise or interference,…
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About 6 years 5 months of term left · ends 5 Apr 2033 (estimated)
This application claims the benefit of priority to Patent Application No. 101117542, filed in Taiwan on May 17, 2012; the entirety of which is incorporated herein by reference for all purposes.
The disclosure generally relates to a wireless LAN communication device and, more particularly, to the wireless LAN communication device which may reduce the impacts of the adjacent channel interference signals.
Many countries have reserve some radio bands for developing industrial, scientific, and medical applications, i.e., the industrial, scientific and medical radio bands (the ISM band). The wireless local area network (LAN) communication devices utilize the ISM band to perform communications, and have been successfully adopted in many applications.
FIG. 1 shows a simplified functional block diagram of a wireless LAN communication device according to one embodiment of the present disclosure.
FIG. 2 shows a simplified input signal power to output signal power characteristic curve of the low-noise amplifying circuit in FIG. 1 according to one embodiment of the present disclosure.
FIG. 3 shows several example mappings between the gains of the amplifier circuits and the received signal strengths of the wireless communication LAN device in FIG. 1 according to one embodiment of the present disclosure.
Reference is made in detail to embodiments of the invention, which are illustrated in the accompanying drawings. The same reference numbers may be used throughout the drawings to refer to the same or like parts, components, or operations.
FIG. 1 shows a simplified functional block diagram of a wireless LAN communication device 100 according to one embodiment of the present disclosure. The wireless LAN communication device 100 is associated with an access point AP1 of a basic service set BSS1, and utilizes a channel in a frequency band F1 to transceive (transmit and/or receive) wireless signals. Moreover, in this embodiment, the wireless LAN communication device 100 may receive wireless signals from an access point AP2 of a basic service set BSS2.
The wireless LAN communication device 100 comprises an antenna 110, a low-noise amplifying circuit 120, a mixing circuit 130, a filtering circuit 140, a variable gain amplifying circuit 150, a signal strength calculating circuit 160, an analog to digital converting circuit 170, and a signal processing circuit 180. The signal processing circuit 180 comprises a demodulation circuit 182, an interference detection circuit 184, a false alarm counting circuit 186, and a control circuit 188. Some elements and connections of the wireless LAN communication device 100 are not shown in FIG. 1 for the purposes of conciseness and clearer explanation.