Analog beamforming devices
US-2018183509-A1 · Jun 28, 2018 · US
Electronic apparatus, wireless reception method, and wireless system
US10830860B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10830860-B2 |
| Application number | US-201815907466-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 28, 2018 |
| Priority date | Oct 17, 2017 |
| Publication date | Nov 10, 2020 |
| Grant date | Nov 10, 2020 |
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Abstract
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According to one embodiment, a wireless receiver includes reception circuitry and processor circuitry. The reception circuitry receives a radio wave from a radio wave emitter. The processor circuitry estimates a parameter of a ratio of a first received power of a line-of-sight component in the radio wave to a second received power of the radio wave, estimate the first received power based on the parameter and a value of the second received power; and calculate a distance to the radio wave emitter, based on the first received power.
First claim
Opening claim text (preview).
The invention claimed is: 1. An electronic apparatus, comprising: reception circuitry configured to receive a radio wave from a wireless transmitter to calculate a Received Signal Strength Indication (RSSI); processor circuitry configured to: estimate a parameter of a ratio of first received power of a line-of-sight component in the radio wave to second received power of the radio wave based on variation in the RSSI owing to variation in channel of the radio wave; estimate the first received power based on the parameter and a value of the second received power; and calculate a distance to the wireless transmitter, based on the first received power. 2. The electronic apparatus according to claim 1 , wherein the reception circuitry is configured to receive, from the wireless transmitter, the radio waves emitted at a plurality of frequencies, and the processor circuitry is configured to estimate the first received power of a line-of-sight component, based on variation in the RSSI at the frequencies. 3. The electronic apparatus according to claim 1 , wherein the processor circuitry is configured to estimate the parameter, based on the RSSI of the radio waves, and on an RSSI of radio waves received from one or more other wireless transmitters up to a time point of reception of the radio waves from the wireless transmitter. 4. The electronic apparatus according to claim 1 , wherein the processor circuitry is configured to calculate the distance using attenuation constants of channels and the parameter, and change the value of the constant according to the value of the parameter. 5. The electronic apparatus according to claim 1 , wherein the parameter represents a ratio between the line-of-sight component power and a non-line-of-sight component power. 6. A wireless reception method, comprising: receiving a radio wave from a wireless transmitter to calculate a Received Signal Strength Indication (RSSI); estimating a parameter of a ratio of a first received power of a line-of-sight component in the radio wave to a second received power of the radio wave based on variation in the RSSI owing to variation in channel of the radio wave; estimating the first received power based on the parameter and a value of the second received power; and calculating a distance to the wireless transmitter, based on the first received power. 7. A wireless system, comprising: a wireless transmitter configured to transmit a radio wave; reception circuitry configured to receive the radio wave from the wireless transmitter to calculate a Received Signal Strength Indication (RSSI); processor circuitry configured to: estimate a parameter of a ratio of a first received power of a line-of-sight component in the radio wave to a second received power of the radio wave based on variation in the RSSI owing to variation in channel of the radio wave; estimate the first received power based on the parameter and a value of the second received power; and calculate a distance to the wireless transmitter, based on the first received power.
Assignees
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Classifications
using intensity measurements · CPC title
- G01S1/045Primary
Receivers · CPC title
Interference · CPC title
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Frequently asked questions
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- What does patent US10830860B2 cover?
- According to one embodiment, a wireless receiver includes reception circuitry and processor circuitry. The reception circuitry receives a radio wave from a radio wave emitter. The processor circuitry estimates a parameter of a ratio of a first received power of a line-of-sight component in the radio wave to a second received power of the radio wave, estimate the first received power based on th…
- Who is the assignee on this patent?
- Toshiba Kk
- What technology area does this patent fall under?
- Primary CPC classification G01S1/045. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Nov 10 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).