公开(公告)号：US20060209739A1

公开(公告)日：2006-09-21

申请号：US11289259

申请日：2005-11-29

申请人： P. Kumar ,  Reza Omrani ,  Joseph Touch ,  Alan Willner ,  Poorya Saghari

发明人： P. Kumar ,  Reza Omrani ,  Joseph Touch ,  Alan Willner ,  Poorya Saghari

IPC分类号： H04B7/216

CPC分类号： H04J14/007 ,  H04J13/004 ,  H04J13/18

摘要： An optical code division multiple access (OCDMA) system includes an optical transmitter system configured to transmit data from a plurality of users through a shared optical channel by encoding the data from each user with a spreading code assigned to that user. Each spreading code includes a unique sequence of T time chips along a time axis. The data from each user is representable by T symbols. The OCDMA system further includes an optical receiver system configured to demodulate the data from each user by correlating signals received from the transmitter system with the spreading code assigned to that user. When transmitting a data symbol for each user, the transmitter system selects one out of T distinct cyclic shifts of the spreading code assigned to that user, and transmits the selected cyclic shift of the assigned spreading code along the time axis.

公开(公告)号：USD295614S

公开(公告)日：1988-05-10

申请号：US725942

申请日：1985-04-22

申请人： Joseph Touch

设计人： Joseph Touch