my apology for my bad opening post
actually i was facing two problems. the first is about the wireless network connection. the second, i installed fedora 18 after windows 8 and the grub couldn't detect my windows boot loader. so, i decided to format and to reinstall windows 8 only, therefore i can't run the command "lspci -nnk". now, i only have windows 8 installed. after what i have faced, for now, i have not brave enough to install fedora.
i don't know how to detect my wireless adapter series, but by checking windows device manager, seems that it is Broadcom, but i don't know specifically.
my device is Lenovo Z480 with Intel core i7.
---------- Post added at 06:02 AM ---------- Previous post was at 01:32 AM ----------
sorry, i forgot some information, before i reinstall my pc, i have tried the solution posted here
the result for the command
ifconfig wlan0 up && iwlist wlan0 scanning
is something like "no scan result"