Abstract
To provide a method and apparatus for transmitting a pilot on multiple antennas.SOLUTION: A wireless transmit/receive unit (WTRU) may transmit a primary dedicated physical control channel (DPCCH) and at least one secondary DPCCH via multiple antennas using different channelization codes. The first eight pilot symbols of the secondary DPCCH may be same as pilot symbols of length 8 of the primary DPCCH. The secondary DPCCH may include the same number of pilot bits as the primary DPCCH in a normal mode and in a compressed mode. The transmit power of the secondary DPCCH may be adjusted on the basis of a ratio of the number of pilot symbols in the primary DPCCH and the secondary DPCCH. When a required transmit power exceeds a maximum allowed transmit power of the WTRU, power scaling may be applied equally to the primary DPCCH and the secondary DPCCH.SELECTED DRAWING: Figure 13
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