Invention Grant
US06266331B1 Device for generating multiple spreading sequences in reverse high speed data channels
失效
用于在反向高速数据信道中产生多个扩频序列的装置
- Patent Title: Device for generating multiple spreading sequences in reverse high speed data channels
- Patent Title (中): 用于在反向高速数据信道中产生多个扩频序列的装置
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Application No.: US09108429Application Date: 1998-07-01
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Publication No.: US06266331B1Publication Date: 2001-07-24
- Inventor: Thomas W. Baker , Richard A. Cesari , Xiao-An Wang
- Applicant: Thomas W. Baker , Richard A. Cesari , Xiao-An Wang
- Main IPC: H04B7216
- IPC: H04B7216

Abstract:
The present invention discloses a device for generating multiple spreading sequences efficiently. In a preferred embodiment, the eight different spreading sequences are generated in parallel. In this embodiment, the spreading sequence generator comprises a master sequence generator and eight secondary sequence generators. The spreading sequence generator also comprises eight different modulo-2 adders which are used for generating parity check sum outputs. The master sequence generator is responsible for creating a master output from the first subgroup. The secondary sequence generators create eight different secondary outputs. Each of the secondary outputs is combined with the master output through one of the eight modulo-2 adders to create eight different spreading sequences. In an alternative embodiment, the principles of the present invention may be used to generate such spreading sequences in a sequential manner. Both embodiments provide efficiency and power savings over the prior art method and apparatus.
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