AN APPARATUS TO MAXIMIZE FREQUENCY DIVERSITY FROM A USER'S PERSPECTIVE AND A METHOD THEREOF

摘要

32 METHOD AND APPARATUS FOR HYBRID FDM-CDM STRUCTURE FOR SINGLE CARRIER BASED CONTROL CHANNELS ABSTRACT A system and method for hybrid FDM (frequency division multiplexing)-CDM (code division muhiplexing) structure for single carrier control channels is provided. The hybrid FDM-CDM structure maximizes frequency diversity over the entire available bandwidth such that orthogonality between signals from users in a given cell is maintained. Thus, users in the given cell can transmit over a non-contiguous set of tones. Furthermore, the hybrid FDM-CDM structure maintains orthogonality of a pilot of users in different cells based on a despreadmg operation in the time domain.