Consider an ofdm implementaion that uses 15 kHz subcarriers and use an ofdm symbol of 2048 subcarriers. the nominal cyclic prefix accounts for 10% guard time. The extended cyclic prefix can use up to 25%. 1600 subcarriers can be used for data transmission. the rest are needed for pilot and null subcarriers. the transmission bandwidth is 25 mHz using 32 WAM modulation. What is the data rate for the nominal CP?