公开(公告)号：JP2808490B2

公开(公告)日：1998-10-08

申请号：JP50925793

申请日：1992-10-21

Applicant: BELL COMMUNICATIONS RES

Inventor： CRESPO PEDRO MIGUEL ,  HONIG MICHAEL LATHAM ,  SALEHI JAWAD

IPC: H04B15/00 ,  H04J13/00 ,  H04L5/02

公开(公告)号：JPH07501192A

公开(公告)日：1995-02-02

申请号：JP50925793

申请日：1992-10-21

Applicant: BELL COMMUNICATIONS RES

Inventor： CRESPO PEDRO MIGUEL ,  HONIG MICHAEL LATHAM ,  SALEHI JAWAD

IPC: H04B15/00 ,  H04J13/00 ,  H04L5/02 ,  H04J13/04

公开(公告)号：DE69229277T2

公开(公告)日：1999-12-30

申请号：DE69229277

申请日：1992-10-21

Applicant: BELL COMMUNICATIONS RES

Inventor： CRESPO PEDRO MIGUEL ,  HONIG MICHAEL LATHAM ,  SALEHI JAWAD

IPC: H04J13/00 ,  H04L5/02 ,  H04B15/00 ,  H04B14/02 ,  H04J9/00 ,  H04K1/02

Abstract: A spread-time code division multiple access (ST-CDMA) technique is disclosed for bandlimited access to a channel. With ST-CDMA, pseudo-random (PN) sequences are assigned to each transmitter in the multi-transmitter system, and the Fourier transform of the transmitter pulse for a given transmitter is determined by modulating the phase of the desired transmitter spectrum by the PN sequence assigned to the transmitter. The data symbols produced by the transmitter are conveyed by delayed versions of the transmitter pulse. The transmitted data for a particular transmitter is recovered at a receiver synchronized to the transmitter by sampling the output of a filter matched to the corresponding transmitter pulse.

公开(公告)号：DE69229277D1

公开(公告)日：1999-07-01

申请号：DE69229277

申请日：1992-10-21

Applicant: BELL COMMUNICATIONS RES

Inventor： CRESPO PEDRO MIGUEL ,  HONIG MICHAEL LATHAM ,  SALEHI JAWAD

IPC: H04J13/00 ,  H04L5/02 ,  H04B15/00 ,  H04B14/02 ,  H04J9/00 ,  H04K1/02

Abstract: A spread-time code division multiple access (ST-CDMA) technique is disclosed for bandlimited access to a channel. With ST-CDMA, pseudo-random (PN) sequences are assigned to each transmitter in the multi-transmitter system, and the Fourier transform of the transmitter pulse for a given transmitter is determined by modulating the phase of the desired transmitter spectrum by the PN sequence assigned to the transmitter. The data symbols produced by the transmitter are conveyed by delayed versions of the transmitter pulse. The transmitted data for a particular transmitter is recovered at a receiver synchronized to the transmitter by sampling the output of a filter matched to the corresponding transmitter pulse.