All Questions
Tagged with electrical-engineering wireless-communication
38
questions
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2
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60
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Can wireless charging become more energy efficient?
I've stumbled upon a few articles saying that wireless charging takes more energy to charge something compared to the cable. Like this one.
Like in the test from the article, it takes 47.33 % more ...
1
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1
answer
64
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Do they sell some sort of non-"consumery" GPS trackers?
I have seen these expensive things that you can put in a moving box while moving, to keep track of your stuff in case the moving people drive away with their truck and steal it. I also see expensive ...
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0
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21
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Transforming a Wireless Computer Mouse into a Wireless Switch [closed]
With no computer involved whatsoever, I want to be able to read oscillator outputs from my wireless mouse and switch an LED on a left click AND off on a right click. I have taken my mouse apart to try ...
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1
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70
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How to make a wireless modem using a normal Wi-Fi router and a 4g usb modem
I have a normal TP link (Model: TL-WR841N) router and an USB 4g modem. But the WIFI router does not have any USB port. I want to connect the USB modem with the router, want to share internet ...
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1
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Monitoring Connectivity on ZigBee
I am trying to figure out some ways in which a ZigBee network can be monitored. As is the case in any network, here we have a central coordinator and several slaves joined, however, there seems to be ...
- 31
2
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3
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927
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Bandwidth vs Capacity
Two questions on wireless transmission, packed into one.
First: I am confused about the meaning of the term 'Bandwidth' in a wireless transmission environment. The two most common definitions I could ...
- 31
1
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0
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32
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Mobile Frequency and Carrier Frequency not Matching
I am using a Google Nexus 6 Mobile in India with Airtel as Network Provider. Recently Airtel has upgraded their Network to 2300 Mhz 4G. Whereas Google Nexus 6 Operates on Band 3 (1800Mhz) LTE.
When ...
2
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0
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182
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Negative transmit power in dBm
I am calculating the transmit power for $K$ single antenna IoT devices in an Indoor scenario. The receiver has 64 antennas. I am trying to minimize the transmit sum-power, i.e., $\sum_k p_k$, where $...
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3
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281
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Tethered Balloons vs Towers for Wireless Communication
If we use tethered balloons (aerostats) with wireless gateways fitted on them (let's say for Cellular or LPWAN communication), they can provide much more coverage owing to the height they can reach (e....
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4
votes
1
answer
93
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What criteria to focus on when selecting a BLE module?
I am trying to select a BLE module for low power application. I have looked into different BLE modules from different chip manufacturers. For example:
ISM78G1D Bluetooth Low Energy SIP from Inventek
...
- 350
1
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0
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18
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Orthogonal Channels in a RAKE receiver?
Can I use the delay of different paths of a RAKE receiver for orthogonal channels. The idea is that if I have a square law detector for a packet of bits there will be no channel interference because ...
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2
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2
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115
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Can you detect the operation of a wireless radio (or other wavelength) receiver?
I am Comp-sci student doing a software engineering paper about designing a program, planning the software like you were actually planning a real-life software project, short of writing actual pseudo-...
1
vote
1
answer
324
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What are alternative to installing LTE / Cell Tower to address capacity issue?
One of the cellular vendors wants to install a 180 foot monopole antenna in our neighborhood. They claim that there is significant growth in LTE consumers. So in order to better serve the customers ...
- 570
2
votes
1
answer
428
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A 40MHz oscillator in usb wifi adapter
I disassembled a usb wifi adapter. I was surprised to see a 40MHz oscillator, when wifi works at 2.4GHz. How the output of the oscillator is scaled to the required frequency?
- 265
5
votes
1
answer
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Why do bluetooth headsets get interference (choppy sound quality) outdoors?
This is more of a general physics question to help me understand how to choose sports headsets in the future, however it is too specific to a certain use case (bluetooth headset) to belong in the ...
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