| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna array in a radio node including multiple antenna elements for transmitting a wider beam covering a majority of a sector cell that includes a common signal and a narrower beam covering only a part of the sector cell that includes a mobile user-specific signal. SOLUTION: Transmitting circuit 20 is coupled to an antenna array 12, and processing circuit is coupled to the transmitting circuit. The processing circuit ensures a user-specific signal and a common signal in a mixed beam embodiment are in-phase and time-aligned at the antenna array. In a steered beam embodiment, the processing circuit ensures the user-specific signal and the common signal are time-aligned and have a controlled phase difference when received at mobile stations in a sector cell. In both embodiments, distortions in the common signal and the user-specific signal associated with their conversion from baseband frequency to radio frequency are also compensated. COPYRIGHT: (C)2011,JPO&INPIT
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