Local oscillator bandwidth adjustment method, receiver, computer medium, and system

Abstract

The present invention provides a local oscillator bandwidth adjustment method, a receiver, a computer medium, and a system. The local oscillator bandwidth adjustment method includes: performing clearchannel assessment detection before a request-to-send data packet sent by a transmit end is received, obtaining an available bandwidth, and sending a request-to-send feedback data packet correspondingto the request-to-send data packet to the transmit end; adjusting a bandwidth of the local oscillator to the available bandwidth included in the request-to-send feedback data packet at a starting time of receiving the data packet; when a block feedback packet is transmitted to the transmit end, after a Short Interframe Space duration, determining whether the data packet is received; and if the data packet is received, maintaining the bandwidth of the local oscillator; or if the data packet is not received, the bandwidth of the local oscillator is adjusted to an initial bandwidth. When the above solution is applied, the bandwidth of the local oscillator can be dynamically adjusted according to the bandwidth used in real time, so that a received signal is prevented from being interfered byother channels.

Description

technical field [0001] The embodiments of the present invention relate to the communication field, and in particular to a local oscillator bandwidth adjustment method, a receiver, a computer medium and a system. Background technique [0002] The International Organization for Standardization (IEEE) 802.11ac supports dynamic bandwidth adjustment, that is, it dynamically supports multiple bandwidths such as 20MHz, 40MHz, 80MHz, and 160MHz to receive data. [0003] In a superheterodyne receiver, the frequency of the received signal is converted by a local oscillator (Local Oscillator, LO) to generate an AM intermediate frequency. [0004] In existing products, for the LO, no matter which bandwidth is configured to receive data, it works at the maximum bandwidth, so the received signal is easily interfered by other channels, resulting in the performance degradation of Wireless Local Area Networks (WLAN) . Contents of the invention [0005] The technical problem solved by the...

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Problems solved by technology

[0004] In existing products, for the LO, no matter which bandwidth is configured to receive data, it works at the maximum bandwidth, so the received signal is easily interfered by other channels, resulting in the performance degradation of Wireless Local Area Networks (WLAN)

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