- High QAM rate = more throughput
- Lower modulation allow smaller antenna size.
Quadrature amplitude modulation (QAM) is an analog and a digital modulation scheme, used extensively as a modulation scheme for wireless digital telecommunication systems. Arbitrarily high spectral efficiencies can be achieved with QAM by setting a suitable constellation size, limited only by the noise level and linearity of the communications channel.
Eband is limited to QAM rate of 64.