WO2000060754A1 - Radio transmitter and power supply unit for radio transmitter - Google Patents

Radio transmitter and power supply unit for radio transmitter Download PDF

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Publication number
WO2000060754A1
WO2000060754A1 PCT/JP2000/002184 JP0002184W WO0060754A1 WO 2000060754 A1 WO2000060754 A1 WO 2000060754A1 JP 0002184 W JP0002184 W JP 0002184W WO 0060754 A1 WO0060754 A1 WO 0060754A1
Authority
WO
WIPO (PCT)
Prior art keywords
synthesizer
signal
transmission rate
audio signal
power supply
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2000/002184
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
Jiro Ishikawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to EP20000913106 priority Critical patent/EP1087535A1/en
Publication of WO2000060754A1 publication Critical patent/WO2000060754A1/ja
Priority to US09/729,284 priority patent/US20010000504A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/1607—Supply circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/1607—Supply circuits
    • H04B1/1615—Switching on; Switching off, e.g. remotely
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • H04W52/0274—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof
    • H04W52/028—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof switching on or off only a part of the equipment circuit blocks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to a radio transmitter and a power supply control unit in the radio transmitter.
  • the present invention relates to a wireless transmitter and a power supply control unit in the wireless transmitter.
  • the CDMA code division multiple access
  • Fig. 4 shows a typical configuration of such a conventional wireless transmitter, which is known from the technical capability S.
  • the wireless transmitter includes an audio signal terminal 1, a vocoder 2 connected to the audio signal terminal 1, a channel signal modulation wave forming unit 3, and a D / A converter 4.
  • the IF synthesizer 5, the modulator 6 connected thereto, the IF-AGC 7, the frequency converter 8, the main synthesizer 9, and the knock amplifier 10 the IF synthesizer 5, the modulator 6 connected thereto, the IF-AGC 7, the frequency converter 8, the main synthesizer 9, and the knock amplifier 10 ,
  • D-AMP dry amplifier
  • PA power amplifier
  • IS isolator
  • the wireless transmitter is a data-noise.
  • the purpose of the present invention is to take into account the time required for the frequency of the main synthesizer to reconverge, the power-on time of the IF synthesizer, and the like, in addition to the selected transfer rate.
  • By providing power to the transmission system by means of switching it is possible to provide a wireless transmitter that can more reliably reduce current consumption while ensuring stable operation of the synthesizer. It is here.
  • Transmission rate determining means for determining one transmission rate from a plurality of transmission rates based on the audio signal;
  • An IF synthesizer for generating an IF signal to modulate the audio signal;
  • Modulation means for modulating the audio signal based on the IF signal from the IF synthesizer
  • a mains synthesizer that generates an RF signal for frequency conversion
  • Frequency conversion means for frequency-converting the audio signal modulated by the modulation means based on the RF signal from the main synthesizer
  • Amplification means for amplifying and outputting the audio signal converted by the frequency conversion means
  • Timing based on the transmission rate determined by the transmission rate determining means, and further based on the convergence time of the IF synthesizer and the main synthesizer.
  • Power supply means for supplying power to at least the IF synthesizer, the modulation means, and the frequency conversion means.
  • An IF synthesizer for generating an IF signal to modulate the audio signal
  • Modulation means for modulating the audio signal based on an IF signal from the IF synthesizer
  • a main synthesizer that generates an RF signal for frequency conversion, Frequency conversion means for frequency-converting the audio signal modulated by the modulation means based on the RF signal from the main synthesizer;
  • Amplifying means for amplifying and outputting the audio signal converted by the frequency converting means
  • Transmission rate determining means for determining one transmission rate from a plurality of transmission rates based on the audio signal
  • Power supply means for supplying power to at least the IF synthesizer, the modulation means, and the frequency conversion means by mining;
  • This invention consumes not only an amplifier but also a transmission system including a synthesizer and the like by using the wireless transmitter or the power supply control unit in the wireless transmitter as described above. Creates timing considering the convergence time of the synthesizer so that the current can be reduced and the synthesizer operates stably during transmission, and supplies power to the transmission system accordingly. It is a thing. This makes it possible to reduce current consumption while securing stable operation of the synthesizer, especially during low-rate transmission.
  • Transmission rate determining means for determining one transmission rate from a plurality of transmission rates based on the audio signal
  • An IF synthesizer for generating an IF signal to modulate the audio signal
  • Modulation means for modulating the audio signal based on the IF signal from the IF synthesizer
  • Frequency conversion means for frequency-converting the audio signal modulated by the modulation means based on the RF signal from the main synthesizer
  • Amplification means for amplifying and outputting the audio signal converted by the frequency conversion means
  • a timing based on the transmission rate determined by the transmission rate determining means further comprising a power-on time of the IF synthesizer, and A first power supply for supplying power to at least the IF synthesizer, the modulating means, and the frequency converting means by timing based on the convergence time of the load fluctuation of the synthesizer.
  • a power supply control unit in the wireless transmitter according to the present invention. According to the knit,
  • An IF synthesizer that generates an IF signal to modulate the audio signal
  • Modulation means for modulating the audio signal based on an IF signal from the IF synthesizer
  • Frequency conversion means for frequency-converting an audio signal modulated by the modulation means based on an RF signal from the main synthesizer
  • Amplifying means for amplifying and outputting the audio signal converted by the frequency converting means
  • Transmission rate determining means for determining one transmission rate from a plurality of transmission rates based on the audio signal
  • the timing based on the transmission rate determined by the transmission rate determining means and further includes a power-on time of the IF synthesizer and the main synthesis time.
  • the state of the IF synthesizer and the main synthesizer in the transmission system is determined by the wireless transmitter or the power supply control unit in the wireless transmitter as described above.
  • the rise time at power-on should be taken into consideration, at least in order to attain a stable state at the time of transmission.
  • power is supplied to the transmission unit based on the timing of the transfer rate. This makes it possible to reduce the current consumption while ensuring the operational stability of each synthesizer.
  • the present invention also specifies the timing of power supply of an amplifier for amplifying a signal after frequency conversion, and the power supply of both a transmission system including a synthesizer and an amplifier is different. By controlling it by im- aging, the overall current consumption of the wireless transmitter can be reduced.
  • FIG. 1 is a block diagram of a wireless transmitter according to the present invention.
  • FIG. 2 is a diagram showing an example of variable data rate transmission of the CDMA channel according to the present invention.
  • FIG. 3 is a diagram illustrating the power control bits during low-rate transmission according to the embodiment of the present invention, the output of the amplifier power control signal generator 20 and the output of the transmission power control signal generator 21. Shows the relationship between and This is a timing chart.
  • FIG. 4 is a block diagram of a conventional wireless transmitter.
  • FIG. 1 is a block diagram of a wireless transmitter according to the present invention.
  • the wireless transmitter has an audio signal terminal 1, a vocoder 2 connected thereto, a channel signal modulation wave forming unit 3, and a DZA connector 4.
  • a full I Noreta 1 1, and D-AMP 1 2 the full I Noreta 1 3, Nono 0 Waa pump (PA) 1 4, a mosquito plug 1 5, and ISO l 6, antenna duplexer 1 7 And are connected to the antenna 18.
  • PA Nono 0 Waa pump
  • the wireless transmitter includes a data burst randomizer 19, an amplifier power control signal generator 20 connected thereto, and a transmission power control signal generator 21.
  • power is supplied to each unit at a predetermined timing described later.
  • the wireless transmitter of the present invention operates as described below.
  • an audio signal is supplied to a vocoder 2 via an audio signal input terminal 1, where the audio signal is encoded, and then convolutionally encoded by a channel signal modulation wave forming unit 3 and processed by a signal processor.
  • Quinter Leave, Lb6 Fourth-order quadrature modulation method modulation and direct sequence spreading are performed.
  • quadrature modulation processing is performed in the modulator 6 using the IF frequency generated by the IF synthesizer 5.
  • the modulated IF-band audio signal is input to IF-AGC 7 and moderately amplified, and then to IF converter 8 for IF input.
  • the signal of the RF frequency generated by the main synthesizer 9 is appropriately amplified by the buffer amplifier 10, and the IF signal from the frequency converter 8 is output. The signal and are mixed and the RF signal is output.
  • This output is band-limited by the finalizer 11 and then properly amplified by the D-AMP 12 again. After that, the band is limited again by the filter 13, the signal is input to the PA 14, and the appropriate amplification is performed again. Sent from antenna 18.
  • the output level of the antenna 18 is +2350 dBm in the case of the IS-95 system, which is +2350 dBm. Therefore, in this embodiment, three amplifiers 7 and 1 are used. The gain is adjusted by 2 and 14.
  • an appropriate transmission rate is selected from a plurality of rates shown later in Fig. 2 according to the voice rate of the vocoder. Is done. Then, the amplifier power control signal generation section 20 generates an amplifier power control signal corresponding to the transmission rate based on the output signal of the data northland randomizer 19, When transmission is not performed, D—Power supply of AMP1 2 and PA1 4 Perform on / off control to reduce current consumption.
  • a transmission system power supply control signal generation unit 21 is provided as a feature of the present embodiment, and the transmission system power supply control signal generation unit 21 here includes a data burst burst unit.
  • the transmission system power supply control signal generation unit 21 here includes a data burst burst unit.
  • an IF synthesizer 5 using a power supply of a transmission system
  • a modulator 6, an IF—AGC 7, a noise amplifier 10 The power supply to the frequency converter 8 is controlled.
  • the control timing at this time will be described in detail.
  • FIG. 2 shows a transmission example of a CDMA channel according to a variable data rate, which is an embodiment of the present invention.
  • a to D represent different transmission data rates.
  • Rate A the data to be transmitted is GNOPed into a frame of 2 Omsec.
  • a specific symbol is transmitted according to the transmission data rate, and on / off control is performed so as to delete other symbols (time gated).
  • the rate A is 960 bps (funo rate) frame
  • the rate B is 480 bps (north rate) frame
  • the rate C is 240 bps frame.
  • the rate and rate D are 1200 bps frames
  • the rate E is a PN long code.
  • the amplifier power supply control signal generator 20 and the transmission system power control signal generator 21 The frequency at which power supply is suppressed in the power plant is increased, and effective power consumption reduction is realized.
  • the assignment of a gate-on group consisting of symbols to be transmitted and a gate-off group consisting of symbols not to be transmitted is shown in FIG.
  • the position of the gate-on group within one frame at each transmission rate is controlled by the domizer 19, and the PN code (b0 to bl3) of frame E shown in Fig. 2 is used. It is pseudo-randomized by a predetermined calculation based on the calculation.
  • the hatched portion indicates a symbol to be transmitted.
  • FIG. 3 shows the relationship between the power control bit at the time of low-rate transmission according to the embodiment of the present invention, the output of the amplifier power control signal generation unit 20 and the output of the transmission system power control signal generation unit 21.
  • This is a timing chart that indicates.
  • FIG. 3 the characteristics of the present invention will be described.
  • the timing of the output H of a certain transmission system power supply control signal generation unit 21 will be described.
  • FIG. 3 shows the output signal F of the data's first randomizer 19, the output signal G of the amplifier power control signal generator 20, and the output signal H of the transmission power control signal generator 21. Also, the frequency convergent waveform J of the main synthesizer 9 and the frequency convergent waveform K of the IF synthesizer 5 are shown.
  • the amplifier power control signal generation unit 20 includes an amplifier
  • the power supply is controlled based on the output signal F of the data burst randomizer 19 according to the selected transfer rate.
  • the rise of the signal (T 1) is made to rise earlier by that time in consideration of the rise time (T 2) of the amplifier.
  • the output H of the transmission system power supply control signal generation unit 21 can be controlled based on the output signal F of the data northland randomizer 19 as well.
  • the frequency reconvergence time (T 4) due to the load fluctuation of the main synthesizer 9 when the power of the amplifier 10 is turned on.
  • the transmission system power supply control signal generation unit 21 of the present embodiment should turn off all the transmission system power supplies other than the amplifiers 12 and 14 during non-transmission at the low rate.
  • the power supply of the transmission system is started earlier than the power supply of the amplifier (T 3), and the amplifiers 12 and After turning off the power of 14, the power of the transmission system other than the amplifiers 12 and 14 is turned off.
  • the allocation of the gate loop and the gate off group for each transmission rate is determined by the data burst randomizer 19.
  • the position of each gate-on group in one frame at the variable rate is pseudo-randomized and determined based on the PN code of the previous frame E in FIG.
  • the transmission rate of 2 PCG may continue at half rate, and at the transmission rate lower than the half-rate, the transmission system will continue every time non-transmission continues for 2 PCG or more. Try turning on / off the power of the unit. In this way, power consumption during non-transmission The flow can be reduced.
  • transmission rate determination means for determining one transmission rate from a plurality of transmission rates based on an audio signal, and an IF signal for modulating the audio signal
  • An IF synthesizer for generating, a modulating means for modulating the audio signal based on an IF signal from the IF synthesizer, a main synthesizer for generating an RF signal for frequency conversion, and the main synthesizer described above.
  • Frequency conversion means for converting the frequency of the audio signal modulated by the modulation means based on the RF signal from the user, and amplification for amplifying and outputting the audio signal converted by the frequency conversion means Means, timing based on the transmission rate determined by the transmission rate determining means, further comprising the IF synthesizer and the The timing based on the convergence time of the main synthesizer includes at least power supply means for supplying power to the IF synthesizer, the modulation means and the frequency conversion means.
  • Wireless transmitter or
  • An IF synthesizer for generating an IF signal to modulate the audio signal, a modulating means for modulating the audio signal based on the IF signal from the IF synthesizer, and an RF for frequency conversion
  • a mains synthesizer for generating a signal; and a frequency converter for frequency-converting an audio signal modulated by the modulator based on the RF signal from the mainsizer.
  • Amplifying means for amplifying and outputting the audio signal converted by the frequency converting means, and a power supply control unit in a wireless transmitter.
  • Transmission rate determining means for determining one transmission rate from a plurality of transmission rates based on an audio signal; and a transmission rate determining means for determining a transmission rate based on the transmission rate determined by the transmission rate determining means.
  • a power supply control unit in a wireless transmitter comprising: a power supply means for supplying power to the conversion means.
  • the transmission power is turned on and off according to the transmission rate in consideration of the reconvergence time of the synthesizer, etc., so that the amplifier operates while ensuring the stable operation of the synthesizer. Not only can the current consumption of the transmission system be reduced, but also a wireless transmitter having a longer talk time or a power supply control unit for the wireless transmitter can be provided. You.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)
  • Communication Control (AREA)
PCT/JP2000/002184 1999-04-06 2000-04-04 Radio transmitter and power supply unit for radio transmitter Ceased WO2000060754A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20000913106 EP1087535A1 (en) 1999-04-06 2000-04-04 Radio transmitter and power supply unit for radio transmitter
US09/729,284 US20010000504A1 (en) 1999-04-06 2000-12-05 Radio transmitter and power supply control unit incorporated in the radio transmitter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP9912099A JP2000295119A (ja) 1999-04-06 1999-04-06 無線送信機
JP11/99120 1999-04-06

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US09/729,284 Continuation US20010000504A1 (en) 1999-04-06 2000-12-05 Radio transmitter and power supply control unit incorporated in the radio transmitter

Publications (1)

Publication Number Publication Date
WO2000060754A1 true WO2000060754A1 (en) 2000-10-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2000/002184 Ceased WO2000060754A1 (en) 1999-04-06 2000-04-04 Radio transmitter and power supply unit for radio transmitter

Country Status (4)

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US (1) US20010000504A1 (enExample)
EP (1) EP1087535A1 (enExample)
JP (1) JP2000295119A (enExample)
WO (1) WO2000060754A1 (enExample)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3482931B2 (ja) 1999-12-08 2004-01-06 日本電気株式会社 Ｄｓ／ｃｄｍａ移動体通信システムの無線通信装置およびサーチャ制御方法
KR100824579B1 (ko) * 2000-11-03 2008-04-23 퀄컴 인코포레이티드 불연속적인 데이터 송신 동안 회로 엘리먼트들의파워다운에 의한 국부 캐리어 신호의 위상 잡음을감소시키는 장치
US7768953B2 (en) 2001-10-19 2010-08-03 Interdigital Technology Corporation System for improved power savings during full DTX mode of operation in the downlink
US7106569B2 (en) * 2002-11-27 2006-09-12 Sierra Wireless, Inc. Adaptive current limiter for wireless modem
CN102076075B (zh) * 2010-12-23 2014-03-19 意法·爱立信半导体（北京）有限公司 控制对端的数据发送功率的方法、装置以及系统
JP5817279B2 (ja) * 2011-07-15 2015-11-18 日本電気株式会社 バイアス制御回路、バイアス制御方法、増幅器、および、送信装置
EP3850892B1 (en) 2018-09-14 2022-08-24 Telefonaktiebolaget LM Ericsson (publ) Transmission system control

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03191628A (ja) * 1989-12-21 1991-08-21 Toshiba Corp 可変レート符号化方式
JPH08509348A (ja) * 1994-02-17 1996-10-01 モトローラ・インコーポレイテッド 信号を群符号化するための方法および装置
JPH10150429A (ja) * 1996-11-18 1998-06-02 Matsushita Electric Ind Co Ltd 送信回路

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03191628A (ja) * 1989-12-21 1991-08-21 Toshiba Corp 可変レート符号化方式
JPH08509348A (ja) * 1994-02-17 1996-10-01 モトローラ・インコーポレイテッド 信号を群符号化するための方法および装置
JPH10150429A (ja) * 1996-11-18 1998-06-02 Matsushita Electric Ind Co Ltd 送信回路

Also Published As

Publication number Publication date
EP1087535A1 (en) 2001-03-28
US20010000504A1 (en) 2001-04-26
JP2000295119A (ja) 2000-10-20

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