MCS: modulation and coding schemes
Nine modulation
and coding schemes (MCSs) are proposed for enhanced packet data communications,providing raw RLC data rates ranging from 8.8 Kbps (minimum value per time slot under the worst radio propagation conditions) up to 59.2 Kbps (maximum value achievable per time slot under the best radio propagation conditions). Data rates above 17.6 Kbps require that 8-PSK modulation be used on the air instead of the regular GMSK modulation.
EDGE for Mobile Internet, 2003 ARTECH HOUSE, Emmanuel Seurre.