PARTLY ORTHOGONAL MULTIPLE CODE TREES

摘要

A method, system and apparatus for spreading physical ch annels (210) using partly orthogonal multiplecode trees(300). A portion of a first code tree is used to spread the physical channels. This first code tree is a combination of a channelization code sequence (825A,870A,875A) and a first scrambling code sequence. A portion of a second code tree (350) is used to spread the physical channels that are remaining and were not spread using the first code tree (310). This second code tree (350) is a combination of the channelization code sequence (825A,870A,875A) and a second scrambling code formed by modifying the first scrambling code. The portion of the second code tree (350) used to spread the channels is orthogonal to the portion of the first code tree (310) used. A plurality of other code trees (300) could be formed using scrambling codes based on the modification of the first scrambling code.