Why is the 802.11b network divided into 22MHz bands?

  • Thread starter Teachme
  • Start date
  • Tags
    Network
In summary, the reason why 802.11b and g networks can only use 3 22MHz bands at a time is because the channel bandwidth determines the data rate. Making smaller bands would result in a slower data rate, while wider bands may lead to interference between neighboring devices. The specific 22MHz band width was likely chosen as the best compromise between the number of channels and data rate.
  • #1
Teachme
72
0
I have been trying to learn why 802.11b and g networks can only use 3 22MHz bands simultaneously why can't these bands be made smaller for faster data rate transfer. Why is it divided specifically in 22MHz bands?

Thanks for reading
 
Engineering news on Phys.org
  • #2
Your channel bandwidth determines your data rate. So you could make narrower bands if you were willing to sacrafice data rate. Or you could make wider bands if you were willing to increase the chance that neighboring devices would interfere with each other.

Not sure why a particular bandwidth was used, but it probably gave the best tradeoff between the number of channels that could be created versus the highest data rate.
 

1. What is an 802.11b network?

An 802.11b network is a wireless local area network (WLAN) technology that allows devices to connect to the internet or other devices without the use of cables. It operates on the 2.4 GHz frequency band and has a maximum data transfer rate of 11 Mbps.

2. How does an 802.11b network work?

An 802.11b network uses a method called direct-sequence spread spectrum (DSSS) to transmit data. This involves dividing the data into smaller packets and spreading them across multiple frequencies. The receiver then collects and reassembles the packets to reconstruct the original data.

3. What devices are compatible with an 802.11b network?

Most devices, such as laptops, smartphones, and tablets, have built-in Wi-Fi capabilities that can connect to an 802.11b network. However, newer devices may not support this older standard and may only be compatible with newer standards such as 802.11n or 802.11ac.

4. What are the advantages of using an 802.11b network?

One of the main advantages of using an 802.11b network is its widespread compatibility with devices and its relatively low cost. It also has a longer range compared to other WLAN technologies, making it suitable for home or small office use.

5. Are there any security concerns with an 802.11b network?

Yes, there are some security concerns with an 802.11b network. This standard uses Wired Equivalent Privacy (WEP) encryption, which is vulnerable to hacking. It is recommended to use Wi-Fi Protected Access (WPA) or WPA2 for better security.

Similar threads

Two-port network: transformation of low-pass to band-stop filter
    • Electrical Engineering
Replies
1
Views
659
Fundamentals of the PN Junction
    • Electrical Engineering
Replies
12
Views
1K
Why can't antennas be made smaller and smaller?
    • Electrical Engineering
Replies
8
Views
2K
Activation of Network Connection failed on Ubuntu 20.04
    • Computing and Technology
Replies
1
Views
1K
A Mixture density neural network prediction bias
    • Set Theory, Logic, Probability, Statistics
Replies
1
Views
990
Superposition Principle for two Voltage Sources (confusions about....)
    • Electrical Engineering
Replies
20
Views
2K
Op-amp Oscillator Circuit Design (10-50 MHz)
    • Electrical Engineering
Replies
6
Views
1K
Python Why backpropagation dominates neural networks instead of interpolation
    • Programming and Computer Science
Replies
4
Views
636
Why does my sensor show "gaps" every 16 units of resolution?
    • Electrical Engineering
Replies
6
Views
745
Comp Sci Network design -- numerical problem asked in our exams
    • Engineering and Comp Sci Homework Help
Replies
1
Views
623

Hot Threads

Recent Insights

Back
Top