5:Capacity of Wireless Channels Vireless F oundations Capacity of AWGN Channel Capacity of AWGN channel Cawgn log(1+SNR) bits/s/HZ =Wlog(1+SNR)bits/s If average transmit power constraint is P watts and noise psd is No watts/Hz, bits/s. Fundamentals of Wireless Communication,Tse&Viswanath 5 5: Capacity of Wireless Channels Fundamentals of Wireless Communication, Tse&Viswanath 5 Capacity of AWGN Channel Capacity of AWGN channel If average transmit power constraint is watts and noise psd is watts/Hz