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公开(公告)号：PT619927E
公开(公告)日：2000-04-28
申请号：PT93922524
申请日：1993-10-07
Applicant: MOTOROLA INC
Abstract: PCT No. PCT/EP93/02743 Sec. 371 Date Nov. 17, 1994 Sec. 102(e) Date Nov. 17, 1994 PCT Filed Oct. 7, 1993 PCT Pub. No. WO94/10765 PCT Pub. Date May 11, 1994This invention relates to a time division multiple access (TDMA) trunked radio system and it relates to a frame structure for communication between fixed, mobile and portable radios in such a system. The radio system comprises: a base station and a plurality of remote radio units for communicating over time slots of a time divided radio channel, the base station having means for transmitting a synchronization signal for defining the timing of the time slots, and each of the remote units having a power amplifier with linearization means, characterized in that the channel comprises predetermined linearization time slots (120, FIG. 2) for transmission of training signals, interspersed between other time slots and each remote radio unit comprises means for generating a training signal during a linearization time slot and linearizing its power amplifier during that time slot in advance of and independent of transmission of signals during one of said other time slots.
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公开(公告)号：FI943189A0
公开(公告)日：1994-07-01
申请号：FI943189
申请日：1994-07-01
Applicant: MOTOROLA INC
Abstract: PCT No. PCT/EP93/02743 Sec. 371 Date Nov. 17, 1994 Sec. 102(e) Date Nov. 17, 1994 PCT Filed Oct. 7, 1993 PCT Pub. No. WO94/10765 PCT Pub. Date May 11, 1994This invention relates to a time division multiple access (TDMA) trunked radio system and it relates to a frame structure for communication between fixed, mobile and portable radios in such a system. The radio system comprises: a base station and a plurality of remote radio units for communicating over time slots of a time divided radio channel, the base station having means for transmitting a synchronization signal for defining the timing of the time slots, and each of the remote units having a power amplifier with linearization means, characterized in that the channel comprises predetermined linearization time slots (120, FIG. 2) for transmission of training signals, interspersed between other time slots and each remote radio unit comprises means for generating a training signal during a linearization time slot and linearizing its power amplifier during that time slot in advance of and independent of transmission of signals during one of said other time slots.
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公开(公告)号：DE19701175B4
公开(公告)日：2005-07-14
申请号：DE19701175
申请日：1997-01-15
Applicant: MOTOROLA INC
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公开(公告)号：ITRM970027A1
公开(公告)日：1998-07-24
申请号：ITRM970027
申请日：1997-01-24
Applicant: MOTOROLA INC
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公开(公告)号：DE19701175A1
公开(公告)日：1997-10-30
申请号：DE19701175
申请日：1997-01-15
Applicant: MOTOROLA INC
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Patent Agency Ranking
公开(公告)号：FR2744318A1
公开(公告)日：1997-08-01
申请号：FR9700068
申请日：1997-01-07
Applicant: MOTOROLA INC
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公开(公告)号：BR9305710A
公开(公告)日：1996-12-31
申请号：BR9305710
申请日：1993-10-07
Applicant: MOTOROLA INC
Abstract: PCT No. PCT/EP93/02743 Sec. 371 Date Nov. 17, 1994 Sec. 102(e) Date Nov. 17, 1994 PCT Filed Oct. 7, 1993 PCT Pub. No. WO94/10765 PCT Pub. Date May 11, 1994This invention relates to a time division multiple access (TDMA) trunked radio system and it relates to a frame structure for communication between fixed, mobile and portable radios in such a system. The radio system comprises: a base station and a plurality of remote radio units for communicating over time slots of a time divided radio channel, the base station having means for transmitting a synchronization signal for defining the timing of the time slots, and each of the remote units having a power amplifier with linearization means, characterized in that the channel comprises predetermined linearization time slots (120, FIG. 2) for transmission of training signals, interspersed between other time slots and each remote radio unit comprises means for generating a training signal during a linearization time slot and linearizing its power amplifier during that time slot in advance of and independent of transmission of signals during one of said other time slots.
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公开(公告)号：GB2272133A
公开(公告)日：1994-05-04
申请号：GB9222922
申请日：1992-11-02
Applicant: MOTOROLA INC
Abstract: This invention relates to a time division multiple access (TDMA) trunked radio system and it relates to a frame structure for communication between fixed, mobile and portable radios in such a system. The radio system comprises: a base station and a plurality of remote radio units for communicating overtime slots of a time divided radio channel, the base station having means for transmitting a synchronization signal for defining the timing of the time slots, and each of the remote units having a power amplifier with linearization means, characterized in that the channel comprises predetermined linearization time slots (120, Fig. 2) for transmission of training signals, interspersed between other time slots and each remote radio unit comprises means for generating a training signal during a linearization time slot and linearizing its power amplifier during that time slot in advance of and independent of transmission of signals during one of said other time slots.
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公开(公告)号：RO119671B1
公开(公告)日：2005-01-28
申请号：RO9401115
申请日：1993-10-07
Applicant: MOTOROLA INC
Abstract: The invention relates to a radiotelephony system with time division multiple access (TDMA) with the resource distribution (trunked) which uses a specific structure of the transmission frames, for the communication between different fixed, mobile and portable radiotelephony units used within such a system. According to the invention, the radiotelephony system comprises a base station (6) and a plurality of remotely located radiotelephony units (5), for the communication within the time slots of a time slots radio channel which comprises predetermined linearization time slots (120), for the transmission of some training signals necessary for the linearization, interspersed between other traffic or control time slots, the base station (6) having means for the transmission of a synchronization signal, for defining the time slot duration, and each of the remotely located radiotelephony units (5) having a power amplifier (12) provided with linearization means. Specific to the system, is the channel which comprises predetermined linearization time slots (120) for the transmission of the training signals necessary for the linearization, interspersed between said other time slots, each remotely located radiotelephony unit (5) comprising means for generating a training signal, during the linearization time slot (120) and for the linearization of the power amplifier (12), during said linearization time slot (120), before the transmisstion of the signals during one of the said other time slots and independently of the transmission thereof.
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公开(公告)号：NL194188C
公开(公告)日：2001-08-03
申请号：NL9320020
申请日：1993-10-07
Applicant: MOTOROLA INC
Abstract: PCT No. PCT/EP93/02743 Sec. 371 Date Nov. 17, 1994 Sec. 102(e) Date Nov. 17, 1994 PCT Filed Oct. 7, 1993 PCT Pub. No. WO94/10765 PCT Pub. Date May 11, 1994This invention relates to a time division multiple access (TDMA) trunked radio system and it relates to a frame structure for communication between fixed, mobile and portable radios in such a system. The radio system comprises: a base station and a plurality of remote radio units for communicating over time slots of a time divided radio channel, the base station having means for transmitting a synchronization signal for defining the timing of the time slots, and each of the remote units having a power amplifier with linearization means, characterized in that the channel comprises predetermined linearization time slots (120, FIG. 2) for transmission of training signals, interspersed between other time slots and each remote radio unit comprises means for generating a training signal during a linearization time slot and linearizing its power amplifier during that time slot in advance of and independent of transmission of signals during one of said other time slots.
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