MODULATION SCHEME AND APPARATUS FOR ADAPTIVE HYBRID AUTOMATIC REPEAT REQUEST IN A WIRELESS COMMUNICATION SYSTEM

摘要

The present invention relates to a modulation method and apparatus with consideration of adaptive Hybrid Automatic Repeat reQuest (HARQ) in a wireless communication system. A method of a transmission end supporting a hybrid modulation technique based on Hybrid FSK and QAM Modulation (FQAM) comprises the steps of: collecting information on a channel state with a reception end; determining a modulation order of the FQAM according to the information on the channel state; and determining a Frequency Shift Keying (FSK) modulation order and a Quadrature amplitude modulation (QAM) order constituting the FQAM according to the modulation order thereof and the information thereon, thereby improves the performance of the HARQ and the FQAM which are expected for the size of a bit given per modulation symbol.