If a particular modulation provides suitable BER performance whenever o/T, 0.1 determine the smallest symbol period, Ts (and thus the greatest symbol rate) that may be sent through RF channels shown in Figure 1 without using an equalizer. 0 dB -10 dB. Pr(t) -20 dB+ -30 dB+ 0 (a) 40 indoor 60 T 0 dB -10 dB -20 dB -30 dB 80 excess delay (ns) P,(t) 0 Figure 1: Two channel responses 4 8 (b) outdoor T (s)