FAST CELL SEARCH AND ACCURATE SYNCHRONIZATION IN WIRELESS COMMUNICATIONS

摘要

Techniques for fast cell search, selection and reselection for wirelesscommunication systems such as OFDM or OFDMA communication systems. In variousimplementations of the described techniques, downlink subframes from basestations to mobile stations are designed to include information in form ofpreambles (514) or post-ambles in one or more downlink subframes to facilitatecell search at receiving mobile stations at high speeds. The describedpreambles (514) and post-ambles may also be used to improve the accuracy ofsignal synchronization in time and frequency.