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Results tagged with wireless-communication
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Most practical way to wirelessly transmit a single bit of information?
Few of the technologies that fit well are Bluetooth Low Energy and Thread. Both of them operate in the 2.4 GHZ ISM band. Also you might want take a look at Zigbee. These all offer basic level of secur …
- 7,145
2
votes
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Can wider range (i.e. 600-700 MHz) antenna replace lower range (650-700 MHz) antenna?
The operational frequency operational range of the proposed antenna is within the frequency range of the old antenna. It should not be an issue from frequency standpoint. If the gains are similar chan …
- 7,145
1
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How can a Wi-Fi access point be visible from one device but not from another?
Based on the post here are few things to look for and some publicly available open source tools.
First you might want to check the operating frequency, 2.4 GHz, 5GHz or both.
When you are setting …
- 7,145
0
votes
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What are alternative to installing LTE / Cell Tower to address capacity issue?
US base Cellular vendors (Such as Verizon, Sprint, AT&T) in combination with cell phone manufactures are starting to introduce a technology call Carrier-branded wifi calling. This is similar to Skype, …
- 7,145
1
vote
Accepted
What criteria to focus on when selecting a BLE module?
Looking at if the device supports BLE 4.0, 4.1, 4.2 or 5.0 is a good start. Not all BLE modules are 5.0 capable. What type is distance range might be a parameter to consider some BLE module have line …
- 7,145
3
votes
Interference between direct signal and reflected signal
Wifi uses Orthogonal frequency-division multiplexing (OFDM). OFDM is resilient to delay spreading which essentially is multipath RF signals or signal bouncing off walls per your question. Here is bett …
- 7,145
0
votes
Accepted
What is a multi-standard mcu?
I think "multi-standard" for CC2650 that the microcontroller support, BLE, Zigbee, 6lowpan, and RF4CE. It is the same SOC, and you load different software stacks support different wireless protocols. …
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8
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How can I find the emission power of a WiFi mobile phone antenna?
Not too sure if you will be able to find datasheet for specific cell phone. These are proprietary information and mobile phone manufactures usually don’t share this type of information in public for v …
- 7,145
1
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How to measure transmit power level from LTE base station?
On iPhones the signal strength indicator can be changed to a numerical value as indicated by the image below.
The above can be done by dialing *3001#12345#*. The phone will enter into field test m …
- 7,145
6
votes
Accepted
Why do bluetooth headsets get interference (choppy sound quality) outdoors?
As you might have already realized there is a good reason that some of Bluetooth headset are inexpensive. Poor design. High quality, well designed Bluetooth headset tend to be expensive. Also not all …
- 7,145
4
votes
What is the difference between Bluetooth Low Energy and Bluetooth BR/EDR in Park mode?
There are many factors that make BLE low power, and I have attempted to address as many of them as possible.
In order to better understand the power consumption differences between Bluetooth classic …
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2
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Bandwidth vs Capacity
Your understanding is correct. Here is an alternate definition from Wikipedia - Bandwidth
Bandwidth is the difference between the upper and lower frequencies in a continuous band of frequencies. …
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