公开(公告)号：WO9629791A3

公开(公告)日：1996-12-19

申请号：PCT/US9600193

申请日：1996-01-11

Applicant: MOTOROLA INC

Inventor： BRUCKERT EUGENE ,  LING FUYUN ,  SEXTON THOMAS ALOYSIUS

IPC: C09D5/23 ,  C09D7/12 ,  G03C1/00 ,  G03C7/00 ,  G03C11/02 ,  G11B5/627 ,  G11B5/633 ,  H04B1/707 ,  H04J

CPC classification number: G03C11/02 ,  G11B5/633

Abstract: A method and apparatus for improved offset frequency estimation includes in a first embodiment a receiver (100) for coherent reception of a signal having known reference information, the receiver including an extractor (106) for extracting the reference information (107) from the signal, and an offset frequency estimator (110). The offset frequency estimator (110) includes a filter (121) for filtering the reference information and outputting a filtered reference sequence; a correlator (122, 124) for correlating the filtered reference sequence against a predetermined reference signal to form correlation values; and a peak detector (126) for determining an offset frequency estimate (131) from the correlation values. Other embodiments are also shown.

公开(公告)号：DE69230716D1

公开(公告)日：2000-04-06

申请号：DE69230716

申请日：1992-10-19

Applicant: MOTOROLA INC

Inventor： KOTZIN MICHAEL ,  BRUCKERT EUGENE

IPC: H04W16/02 ,  H04W16/12 ,  H04W16/24 ,  H04Q7/36 ,  H04B7/26

Abstract: A method of reducing interference within a cellular system (10) by partitioning a designated frequency spectrum within a service coverage area (11, 12, 13, 14, 15, 16, or 17) into a first and at least second spectrum inclusive of the designated frequency spectrum and each with an associated power level. Assignment of communication units to a spectrum and power level are based upon distance from the base site (as determined through signal strength measurements). The spectral content of spectra in adjacent service coverage areas is adjusted to include non-coincidental frequencies.

公开(公告)号：FR2757734A1

公开(公告)日：1998-06-26

申请号：FR9713826

申请日：1997-11-04

Applicant: MOTOROLA INC

Inventor： BRUCKERT EUGENE ,  VILMUR RICHARD J

IPC: H04W36/00 ,  H04Q7/32 ,  H04B7/216

Abstract: A wireless communication device (100) can be handed off while operating in the slotted mode of a CDMA system. The wireless communication device (100) stores, prior to entering slotted mode, an Active Set including at least one active pilot and a Neighbor Set including a plurality of neighbor pilots. At least one receiver searcher (109) scans the at least one active pilot and at least one of the plurality of neighbor pilots prior to an assigned slot. A logic and control circuit (113) includes in the Active Set, prior to the assigned slot, at least two pilots of the at least one active pilot and the at least one of the plurality of neighbor pilots scanned prior the assigned slot. At least two of a plurality of receiver fingers (107) simultaneously monitor the Paging Channels of the at least two pilots during the assigned slot.

公开(公告)号：FR2690024B1

公开(公告)日：1995-12-29

申请号：FR9303497

申请日：1993-03-26

Applicant: MOTOROLA INC

Inventor： BRUCKERT EUGENE

IPC: H04Q7/36 ,  H04B1/713 ,  H04B1/7143 ,  H04B1/715 ,  H04B7/26 ,  H04J4/00 ,  H04J13/16 ,  H04Q7/38

Abstract: In a wireless frequency and time division multiple access (FD/TDMA) communications system having time-slotted communications channels, there is provided a method of and apparatus for hopping wireless communications. It comprises sequencing slot assignments and sequencing frequency assignments, such that a multiplicity of frequencies are thereby usable at each site of a cellular FD/TDMA system without regard to local partitioning among surrounding uses thereof. The effect would be to probablistically reduce the interference, not only by the number of hopping frequencies, but by a factor of the number of time slots per frame.

公开(公告)号：BR9405751A

公开(公告)日：1995-12-05

申请号：BR9405751

申请日：1994-11-03

Applicant: MOTOROLA INC

Inventor： BRUCKERT EUGENE ,  SONNENTAG RICHARD

IPC: H04J13/02 ,  H04B7/26 ,  H04J3/06 ,  H04J11/00 ,  H04L7/02 ,  H04Q7/20 ,  H04W88/18 ,  H04J13/06

Abstract: A coherent reverse channel, a per-chip spreading function, orthogonal spreading functions and a time alignment of all traffic channels are implemented such that the main signal of each channel arrives at a base-station within a fraction of a chip of one another in accordance with the invention. With this, the orthogonality among all channels is maintained, and, when demodulated, all channels except the channel of interest provides a cross-correlation of substantially zero with respect to the remaining signals.

公开(公告)号：FI953769A

公开(公告)日：1995-08-08

申请号：FI953769

申请日：1995-08-08

Applicant: MOTOROLA INC

Inventor： BRUCKERT EUGENE ,  VILMUR RICHARD

IPC: H04W36/30 ,  H04Q

公开(公告)号：FI115594B

公开(公告)日：2005-05-31

申请号：FI953769

申请日：1995-08-08

Applicant: MOTOROLA INC

Inventor： BRUCKERT EUGENE ,  VILMUR RICHARD

IPC: H04W36/30 ,  H04Q7/38 ,  H04B7/26

公开(公告)号：SG69960A1

公开(公告)日：2000-01-25

申请号：SG1996003819

申请日：1994-11-03

Applicant: MOTOROLA INC

Inventor： BRUCKERT EUGENE ,  SONNENTAG RICHARD

IPC: H04J13/02 ,  H04B7/26 ,  H04J3/06 ,  H04J11/00 ,  H04L7/02 ,  H04Q7/20 ,  H04W88/18 ,  H04B7/216

Abstract: A coherent reverse channel, a per-chip spreading function, orthogonal spreading functions and a time alignment of all traffic channels are implemented such that the main signal of each channel arrives at a base-station within a fraction of a chip of one another in accordance with the invention. With this, the orthogonality among all channels is maintained, and, when demodulated, all channels except the channel of interest provides a cross-correlation of substantially zero with respect to the remaining signals.

公开(公告)号：DE69227350D1

公开(公告)日：1998-11-26

申请号：DE69227350

申请日：1992-02-24

Applicant: MOTOROLA INC

Inventor： BRUCKERT EUGENE ,  FALCONER DAVID

IPC: H04B1/707 ,  H04J11/00 ,  H04J13/00 ,  H04J13/18

Abstract: A method and apparatus is provided for transmitting spread spectrum signals. The transmitter (242) receives data symbols (214). Subsequently, the transmitter (242) splits (244) each particular set of two received data symbols (214) into a first and second array of data symbols (252, 254) according to either of two algorithms. The first algorithm includes providing both data symbols (214) of the particular set to the first and second array of data symbols (252, 254) and the second algorithm includes providing one of the data symbols (214) of the particular set to the first array of data symbols (252) and the other of the data symbols (214) of the particular set to the second array of data symbols (254). Subsequently, the transmitter (242) determines particular channels to transmit the first and second array of data symbols (252, 254) by spreading (232, 234) the first and second array of data symbols (252, 254) with a predetermined length Walsh code (216). The transmitter (242) accommodates a variable number of data channels by selecting a particular algorithm from a group consisting essentially of a first algorithm and a second algorithm and setting the predetermined length Walsh code (216) in response to the particular algorithm selected.

公开(公告)号：BR9607788A

公开(公告)日：1998-07-07

申请号：BR9607788

申请日：1996-11-26

Applicant: MOTOROLA INC

Inventor： SEXTON THOMAS A ,  BRUCKERT EUGENE

IPC: H04J11/00 ,  H04J13/00 ,  H04J13/10 ,  H04L1/00 ,  H04Q7/38 ,  H04J13/04 ,  H04B1/707

Abstract: A method for transmitting a communication signal (20) having a data rate over a plurality of spread spectrum traffic channels includes determining a first number of traffic channels required to transmit the communication signal at the data rate, and determining a second number of traffic channels (502) available for transmitting the communication signal (20). In response to a comparison of the first number of traffic channels to the second number of traffic channels, a first traffic channel (54) for transmitting a first portion of the communication signal (50, 51) and a second traffic channel (56) for transmitting a second portion of the communication signal (52, 53) are selected from the. second number of traffic channels (502). The selection of the first traffic channel (54) is non deterministic of the selection of the second traffic channel (56).