公开(公告)号：ZA9104847B

公开(公告)日：1992-04-29

申请号：ZA9104847

申请日：1991-06-24

Applicant: QUALCOMM INC

Inventor： GILHOUSEN KLEIN S ,  KLEIN S GILHOUSEN ,  PADOVANI IRWIN M JACOBS ROBERT ,  IRWIN M JACOBS ROBERTO PADOVAN ,  WEAVER LINDSAY A JR ,  LINDSAY A WEAVER JR ,  WHEATLEY CHARLES E III ,  CHARLES E WHEATLEY III ,  VITERBI ANDREW J ,  ANDREW J VITERBI

IPC: H04B1/707 ,  H04B1/7075 ,  H04B1/709 ,  H04B1/7115 ,  H04B7/005 ,  H04B7/26 ,  H04J3/02 ,  H04J3/16 ,  H04J3/22 ,  H04J11/00 ,  H04J13/00 ,  H04J13/10 ,  H04J13/18 ,  H04L20060101 ,  H04L1/00 ,  H04L1/06 ,  H04L1/08 ,  H04L5/02 ,  H04L5/12 ,  H04L23/02 ,  H04L27/30 ,  H04W52/26 ,  H04M ,  H04J ,  H04B

CPC classification number: H04L1/0002 ,  H04B1/3888 ,  H04B1/707 ,  H04B1/70757 ,  H04B1/709 ,  H04B1/7115 ,  H04B7/2618 ,  H04B7/2628 ,  H04B7/2637 ,  H04B2201/70701 ,  H04B2201/70703 ,  H04J13/0022 ,  H04J13/0048 ,  H04J13/10 ,  H04J13/107 ,  H04J13/18 ,  H04L1/0006 ,  H04L1/0046 ,  H04L1/0065 ,  H04L1/0068 ,  H04L1/0071 ,  H04L1/06 ,  H04L1/08 ,  H04L5/02 ,  H04L5/12 ,  H04L23/02 ,  H04W52/26 ,  Y02D50/10

Abstract: 1. A modulation system for use in spread spectrum communications, comprising: means for generating a first orthogonal sequence signal corresponding to a selected one of a plurality of orthogonal binary sequences; means for generating a pseudo-noise (PN) signal corresponding to a predetermined PN binary sequence; means for combining said first orthogonal sequence signal and said PN signal and for providing a resultant first modulation signal. 2. The system of 1 further comprising additional means for combining said first modulation signal with an input information signal and for providing a resultant spread spectrum information signal. 3. The system of 1 wherein said plurality of orthogonal binary sequences are Walsh sequences. 4. The system of 1 wherein said PN sequence is an augmented length maximal linear sequence PN code.

公开(公告)号：ZA914847B

公开(公告)日：1992-04-29

申请号：ZA914847

申请日：1991-06-24

Applicant: QUALCOMM INC

Inventor： GILHOUSEN KLEIN S ,  KLEIN S GILHOUSEN ,  PADOVANI IRWIN M JACOBS ROBERT ,  IRWIN M JACOBS ROBERTO PADOVAN ,  WEAVER LINDSAY A JR ,  LINDSAY A WEAVER JR ,  WHEATLEY CHARLES E III ,  CHARLES E WHEATLEY III ,  VITERBI ANDREW J ,  ANDREW J VITERBI

IPC: H04B1/707 ,  H04B1/7075 ,  H04B1/709 ,  H04B1/7115 ,  H04B7/005 ,  H04B7/26 ,  H04J3/02 ,  H04J3/16 ,  H04J3/22 ,  H04J11/00 ,  H04J13/00 ,  H04J13/10 ,  H04J13/18 ,  H04L20060101 ,  H04L1/00 ,  H04L1/06 ,  H04L1/08 ,  H04L5/02 ,  H04L5/12 ,  H04L23/02 ,  H04L27/30 ,  H04W52/26 ,  H04M ,  H04J ,  H04B

Abstract: A cell site, comprising: means for modulating configured to format digital data for transmission on a communications channel and to insert at least one timing command into the digital data, the digital data comprising a plurality of bits; means for transmitting coupled to the means for modulating and configured to receive the digital data from the means for modulating, convert the digital data to analog data, and transmit the analog data on the communications channel; and means for receiving configured to receive a signal from at least one remote unit and to determine a timing error of the received signal to be used to generate the timing command in accordance with the timing error, the means for receiving being coupled to the means for modulating and configured to provide the timing command to the means for modulating.