Perkins Coie LLP
Multiple-antenna system for cellular communication and broadcasting
A transmission method and apparatus for use in a multi-cell orthogonal frequency division multiple access (OFDMA) wireless system. A base station includes a plurality of antennas and a plurality of switches coupled to the plurality of antennas. In a unicast transmission mode, orthogonal frequency division multiplexing (OFDM) signals are generated and routed to multiple of the plurality of antennas for transmission by turning on multiple of the plurality of switches. In a single-frequency-network (SFN) transmission mode, OFDM signals are generated and routed to one of the plurality antennas for transmission by turning on one of the plurality of switches. The plurality of antennas produce a first beam pattern during the unicast transmission mode and a second beam pattern during the SFN transmission mode.
Neocific, Inc.
H H H H H H H H H H
H01Q H04W H04W H04W H01Q H04B H04L H04L H04W H04W
inventional inventional inventional additional inventional inventional inventional inventional inventional inventional
Titus Xiaodong
Lo Li