In the above, both data and control symbols (i.e., (.)*12*14) were taken into account in calculating bits/cu.
For the spectral efficiency (SE) in bits/s/Hz, will the channel use be a function of data symbols only? i.e.,
as you see in “channel_uses_total”, it is defined as transmitted LTE symbols (one RB is 12 subcarriers * 7 symbol intervals, 2 consecutive RBs in time in one subframe are always scheduled for the same UE). Therefore, 1 bit/cu means that you transmit 1 bit over one LTE symbol –> 1 bit/cu = 1 bit/(15KHz*1/14ms)