Multiple-antenna system for cell-specific and user-specific transmission

A mobile device configured to operate within a telecommunications system having a plurality of cells, each cell having a serving base station with a plurality of antennas, the mobile device comprising:

• a transmitter configured for transmitting uplink signals to the serving base station of a cell;
• and
• a receiver configured for receiving a first signal from multiple of the plurality of antennas at the serving base station during a first receive time period and a second signal from one of the plurality of antennas at the serving base station during a second receive time period, wherein
• the first signal contains a first group of orthogonal frequency division multiplexing (OFDM) symbols, the first signal transmitted by the serving base station in a first transmission mode with a first beam pattern for unicast transmission within the cell;
• the second signal contains a second group of OFDM symbols, the second signal transmitted by the serving base station in a second transmission mode with a second beam pattern for single frequency network (SFN) broadcast transmission to the cell and other cells;
• and
• a transition between the first receive time period and the second receive time period occurs during a cyclic prefix or a cyclic postfix between OFDM symbols;
• and wherein the first beam pattern is different than the second beam pattern in either an azimuth pattern or an elevation pattern.