You can Download the wireless driver for Realtek RTL8191SE http://www.wireless-driver.com/realtek-rtl8191se-rtl8192se-wireless-drivers-utility/ or http://218.210.127.131/downloads/downloadsView.aspx?Langid=1&PNid=48&PFid=48&Level=5&Conn=4&DownTypeID=3&GetDown=false&Downloads=true#RTL8192SE.
After downloading open your terminal and login as super user.
Now, follow the following commands.
yum install kernel-devel kernel-headers patch make yum update kernel* reboot
Then, unpack the downloaded file using,
tar xvzf rtl819***.tar.gz cd <while the files were unpacked> make make install reboot
Now, We have to restart the network manager,
service NetworkManager restart
That’s all !!!