APPARATUS AND METHOD FOR OFDM DATA COMMUNICATIONS

摘要

A radio system employing Orthogonal Frequency Division Multiplexing (OFDM) includes a Base Transceiver Station (BTS) along with a number of mobile terminals located within a coverage area of the BTS. In this system, a target mobile terminal requires a focused transmission beam to receive high data rate traffic information while the remainder of the mobile terminals must receive pilot and signalling information. To achieve both objectives, a BTS is implemented with a transmission apparatus that generates a directional transmission beam for the data traffic information, and one rotating directional beam for pilot and signalling information.