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Spectral mask and flatness for wireless local area networks

A spectrum and wireless communication technology, applied in the field of spectrum masking and flatness, which can solve problems such as reducing the transmission rate of the physical layer and reducing the system performance.

Inactive Publication Date: 2020-05-26
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Increased interference may degrade system performance (e.g., reduce physical layer transmission rate, reduce medium reuse by other devices, etc.)

Method used

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  • Spectral mask and flatness for wireless local area networks
  • Spectral mask and flatness for wireless local area networks
  • Spectral mask and flatness for wireless local area networks

Examples

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Embodiment Construction

[0043] Wireless Local Area Network (WLAN) transmissions, also known as Wi-Fi transmissions, may cause undesired interference to adjacent channels. Various properties of a WLAN waveform may affect the amount and type of interference caused by that waveform. The power spectral density (PSD) of a waveform may generally define the power of a waveform signal distributed over the frequency of the waveform. The properties of the roll-off portion of the waveform can determine the degree of interference induced on adjacent and / or alternate channels (eg, these waveform properties contribute to the amount of out-of-band interference).

[0044] This specification discloses techniques for spectral masking, flatness, and analysis of waveforms for wireless communications (eg, WLAN communications). For example, a WLAN radio of a station (STA) and / or access point (AP) may include a transmitter for transmitting a waveform conforming to the waveform parameters described herein. That is, a WLAN...

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PUM

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Abstract

Methods, systems, and devices for wireless communication are described. A wireless device may identify a transmission mode for transmission of an input signal to be transmitted. The input signal may thus be modulated according to the identified transmission mode, and the modulated signal may then be transmitted at some power level to produce a transmitted signal having a spectral envelope. In somecases, the spectral envelope may be defined in terms of a power spectral density (PSD) of the transmitted waveform. The PSD may generally define the power of the waveform signal distributed over frequencies of the waveform. Further, the wireless device may control the modulation of the input signal, in addition to the power level of the input signal, to maintain the spectral envelope to be withina spectral mask defined for the implemented transmission mode as well as to conform to spectral flatness parameters.

Description

[0001] cross reference [0002] This patent application claims priority to the following U.S. applications: [0003] U.S. Patent Application No. 16 / 154,530, filed October 8, 2018, by CHEN et al., entitled "SPECTRAL MASK AND FLATNESS FORWIRELESS LOCAL AREA NETWORKS"; [0004] U.S. Provisional Patent Application No. 62 / 582,260, filed November 6, 2017, by CHEN et al., entitled "SPECTRAL MASK AND FLATNESS FORWIRELESS LOCAL AREA NETWORKS"; [0005] U.S. Provisional Patent Application No. 62 / 571,207, filed October 11, 2017, by CHEN et al., entitled "SYSTEMS AND METHODS OF COMMUNICATING VIA SUB-BANDS IN WIRELESS COMMUNICATION NETWORKS"; [0006] U.S. Provisional Patent Application No. 62 / 586,081, filed November 14, 2017, by CHEN et al., entitled "SYSTEMS AND METHODS OF COMMUNICATING VIA SUB-BANDS IN WIRELESS COMMUNICATION NETWORKS"; [0007] U.S. Provisional Patent Application No. 62 / 625,293, entitled "SYSTEMS AND METHODS OF COMMUNICATING VIA SUB-BANDS IN WIRELESS COMMUNICATION NETWO...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00H04L25/03H04L27/26H04W52/36
CPCH04L5/001H04L5/003H04L27/26H04W52/281H04L25/03834H04W52/225H04W52/262H04W52/367H04L5/0007H04L27/26025H04L5/0037H04L5/0048H04B1/7156H04L27/2605H04W52/16H04W72/0453H04B2001/71563
Inventor 李嘉玲L·杨田彬S·韦尔玛尼L·维尔马
Owner QUALCOMM INC
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