Boost a WiFi card's transmission and reception signal under Linux

How do i boost a WiFi card's transmission and reception signal under Linux?

The operating system you use has nothing to do with your Wifi card's signal strength.

Try changing the channel your router uses to 11.
Get your computer and router closer to one another.
Upgrade to 802.11n instead of 802.11g.

The Wireless card is not the object in charge of your network. The router is the "brain" of your network. If you change the channel at the router, the wireless card will follow the router. If you change the channel at the wireless card the router may stop communication with the wireless card.

Linux, Windows, Mac, AIX, HPUX, SunOS, or Solaris, it doesn't matter.

The OS has NOTHING to do with the signal strength of your wireless network. From the OS standpoint, the wireless card you have is either functional or not. It's sorta working or it's almost got the correct driver does NOT exist from an OS standpoint. If you can use the wireless card at all, you have the correct driver installed. If the wireless card is not working you have two possibilities:

1. Install the correct driver.
2. Replace the defective wireless card.

There isn't a dial to pump up the volume on the network speed. If you have an 802.11 g network the fastest it can ever go is 54Mb/s. If you have 802.11g MIMO it can go 108Mb/s. If you have 802.11n it can go 300Mb/s.

Note that all of the above has very little impact on how fast you are able to use the Internet. The Internet connection is controlled by your ISP and usually a much slower connection than 54Mb/s. Average Cable Internet access for example is 6Mb/s. FIoS offers packages with 15Mb/s connections.