CN1780270B - Power resource pool device - Google Patents
Power resource pool device Download PDFInfo
- Publication number
- CN1780270B CN1780270B CN 200410097737 CN200410097737A CN1780270B CN 1780270 B CN1780270 B CN 1780270B CN 200410097737 CN200410097737 CN 200410097737 CN 200410097737 A CN200410097737 A CN 200410097737A CN 1780270 B CN1780270 B CN 1780270B
- Authority
- CN
- China
- Prior art keywords
- unit
- feedback signal
- signal
- feedback
- transmission channel
- 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.)
- Active
Links
Landscapes
- Transmitters (AREA)
- Radio Relay Systems (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention includes: digital matrix unit at input end; complex numbers emission channels used to receive input signal from digital matrix unit; modulation unit and amplifying unit; feedback signal collection unit used to receive feedback signal from emission channel, and to digitalize it; feedback signal analysis unit used to receive the feedback signal processed by feedback signal collection unit, and to send relative time delay difference signal between itself and each emission channel to digital pre-distortion unit in emission channel. The invention can acquire relative time delay parameter between multi emission channels to make output signal from multi emission channels keep definitive phase difference on the output composite matrix.
Description
Technical field
The present invention relates to moving communicating field, relate in particular to a kind of power resource pool device.
Technical background
The cellular mobile communication base station is branch sector transmission and received signal under many circumstances, and the coverage of a general base station can be divided into 3 sectors and 6 sectors etc.The transmission channel of base station all needs power amplifier to come amplifying signal, and the connection of power amplifier input/output terminal and signal processing mode have a significant impact reliability and other aspect of system.Adopting the base station of power resource pool technology that many benefits are arranged in the amplification that transmits, is a kind of good system architecture.
As shown in Figure 1, it is a schematic diagram of power resource pool in the prior art, as seen from the figure, 4 road input signals obtain 4 road new signals after handling through character matrix, give different transmission channels respectively, in Fig. 1, four of the transmission channels that same structure is arranged, finish the acquisition process of DPD (digital pre-distortion), modulation, power amplification and the feedback signal of identical function, the signal of the signal of output and other three transmission channels carries out mixed processing, obtains the output signal that needs.
In the shown power resource pool of Fig. 1, the signal of 4 transmission channel outputs has strict phase place requirement in the output composite matrix, and there is intrinsic defective in existing framework on the time delay of adjusting each transmission channel, is difficult to implement the control in relative time delay of each interchannel.Because each passage is relatively independent, can't know each interchannel delay inequality.And each transmission channel adopts independently feedback signal acquisition channel, and hardware resource requirements is many.The hardware complexity of each transmission channel is all than higher.
Summary of the invention
The objective of the invention is to improve between each transmission channel the precision in relative time delay, propose a kind of hardware resource to be required low power resource pool technical scheme, for this reason, the present invention adopts following technical scheme:
A kind of power resource pool device, comprise the character matrix unit that is positioned at input, receive a plurality of transmission channels of character matrix cell input signal, described transmission channel comprises digital pre-distortion unit, modulating unit and the amplifying unit that is linked in sequence, and also comprises:
Feedback signal collecting unit: receive the feedback signal of transmission channel coupling, and this signal is handled;
Described feedback signal collecting unit has feedback signal acquisition channel switch unit, and control switches to same feedback signal acquisition channel, to receive the feedback signal of transmission channel coupling.
The feedback signal analytic unit: the feedback signal after the receiving feedback signals collecting unit is handled also sends to the difference signal in relative time delay of itself and each transmission channel the digital pre-distortion unit of transmission channel.
Described feedback signal collecting unit also comprises:
Mixing unit, local oscillator unit, intermediate frequency filtering unit, amplifying unit and D/A conversion unit;
Described mixing unit is mixed to intermediate frequency with the local oscillator of feedback signal and feedback path, and amplifies output by intermediate frequency filtering unit and amplifying unit filtering;
Described D/A conversion unit is a digital signal with the analog signal conversion that receives, and exports to the feedback signal analytic unit.
Described power resource pool device also comprises main control unit, links to each other with the feedback signal collecting unit, and described main control unit transmits control signal to the feedback signal collecting unit, controls its receiving feedback signals.
Described feedback signal acquisition channel switch unit is a radio-frequency relay.
Described radio-frequency relay is a time-division control radio-frequency relay, adopts time-division control mode control to switch the feedback signal acquisition channel.
The present invention is from improving the angle of precision in relative time delay between each transmission channel, realize the multiplexing of feedback signal acquisition channel hardware by reasonable design scheme, obtain the parameter in relative time delay between the multichannel transmission channel, make a plurality of transmission channel output signals on the output composite matrix, keep the phase difference of determining, realize good synthetic effect.
Description of drawings
Fig. 1 is the schematic diagram of power resource pool device of the prior art;
Fig. 2 is the schematic diagram of power resource pool device of the present invention.
Embodiment
Below in conjunction with Figure of description the specific embodiment of the present invention is described.
As shown in Figure 2, be the structural representation of power resource pool device of the present invention, this device is provided with 4 road input signals, through the modulation treatment of transmission channel, obtains the output signal that needs.As seen from the figure, the present invention specifically comprises with the lower part:
Be positioned at the character matrix of input, its receiving inputted signal, and this signal is carried out character matrix handle, obtain 4 road new signals.
Transmission channel, the transmission channel of present embodiment, similar with the transmission channel of prior art, comprise the digital pre-distortion unit, modulating unit and the amplifying unit that are linked in sequence.
As seen from the figure, being provided with of feedback signal collecting unit, present embodiment is provided with a time-multiplexed feedback signal collecting unit, and it receives the feedback signal of transmission channel coupling, and the feedback signal acquisition channel is switched in control.Feedback signal is exported to the feedback signal collecting unit by the directional coupler coupling at the transmission channel delivery outlet, has comprised the information of multichannel input signal in the feedback signal, and includes the information on this road emission path time delay.The feedback signal that different feedback signal acquisition channels is gathered is as broad as long on characteristic, and just the information of signaling bearer is different.
This feedback signal collecting unit comprises feedback signal acquisition channel switch unit (radio-frequency relay), mixing unit, local oscillator unit, intermediate frequency filtering unit, amplifying unit, ADC unit (D/A conversion unit) of sequence interlock.This mixing unit is mixed to intermediate frequency with the local oscillator of feedback signal and feedback path, and amplifies output by intermediate frequency filtering unit and amplifying unit filtering.This radio-frequency relay control switches to the feedback signal acquisition channel, to receive the feedback signal of transmission channel coupling.
This D/A conversion unit is a digital signal with the analog signal conversion that receives.
Present embodiment also is provided with a feedback signal analytic unit, and the feedback signal after its receiving feedback signals collecting unit is handled also sends to the difference signal in relative time delay of itself and each transmission channel the digital pre-distortion unit of transmission channel.
Linking to each other with the feedback signal collecting unit is provided with a main control unit, and main control unit transmits control signal to the feedback signal collecting unit, controls its receiving feedback signals.In the present embodiment, can realize controlling this radio-frequency relay unlatching, switch and function such as close.
Like this, the feedback signal of multichannel transmission channel output coupling switched on the same feedback signal acquisition channel by the radio-frequency relay time-division.Feedback signal is through the mixing unit, be mixed to intermediate frequency with the local oscillator of feedback path, amplify through output behind the intermediate frequency filtering unit, by the ADC unit intermediate-freuqncy signal of simulating is transformed to digital medium-frequency signal, feed back signal to the feedback signal analytic unit after the digitlization, it is poor relative time delay to obtain each paths, by the digitized DPD unit that feeds back signal to of feedback signal analytic unit output, send each passage difference signal in relative time delay simultaneously and give DPD unit, the delay inequality that makes each DPD unit proofread and correct own passage.
The present invention obviously reduces feedback signal acquisition channel number, saves hardware resource, original N road is reduced to 1 the tunnel, by radio-frequency relay switch time division multiplexing.
Owing to adopted unified feedback signal acquisition channel, the time delay of each road transmission channel acquired signal is the same on feedback path, the relative time delay that therefore can obtain each road transmission channel very accurately is poor, after this delay inequality information offers the DPD unit of each road transmission channel, the DPD unit carries out real time calibration to delay inequality, make each road transmission channel output signal keep definite relation and precision, improved the synthetic effect of signal greatly to the phase place at output signal composite matrix place.
Each road transmission channel adopts unified local oscillator, and the phase place of the modulator local oscillation signal of every road transmission channel is consistent, so that obtain phase difference definite between final output signal.
Below only be several specific implementation of the present invention, yet protection scope of the present invention is not limited thereto, the scheme of with good grounds this kind principle design, all should be in protection scope of the present invention.
Claims (5)
1. power resource pool device, comprise the character matrix unit that is positioned at input, receive a plurality of transmission channels of character matrix cell input signal, described transmission channel comprises digital pre-distortion unit, modulating unit and the amplifying unit that is linked in sequence, and it is characterized in that also comprising:
Feedback signal collecting unit: receive the feedback signal of transmission channel coupling, and this signal is handled;
Described feedback signal collecting unit has feedback signal acquisition channel switch unit, and control switches to same feedback signal acquisition channel, to receive the feedback signal of transmission channel coupling;
The feedback signal analytic unit: the feedback signal after the receiving feedback signals collecting unit is handled also sends to the difference signal in relative time delay of itself and each transmission channel the digital pre-distortion unit of transmission channel.
2. device as claimed in claim 1 is characterized in that described feedback signal collecting unit also comprises:
Mixing unit, local oscillator unit, intermediate frequency filtering unit, amplifying unit and D/A conversion unit;
Described mixing unit is mixed to intermediate frequency with the local oscillator of feedback signal and feedback path, and amplifies output by intermediate frequency filtering unit and amplifying unit filtering;
Described D/A conversion unit is a digital signal with the analog signal conversion that receives, and exports to the feedback signal analytic unit.
3. device as claimed in claim 1 or 2 is characterized in that also comprising main control unit, links to each other with the feedback signal collecting unit, and described main control unit transmits control signal to the feedback signal collecting unit, controls its receiving feedback signals.
4. device as claimed in claim 1 is characterized in that described feedback signal acquisition channel switch unit, is radio-frequency relay.
5. device as claimed in claim 4 is characterized in that described radio-frequency relay is a time-division control radio-frequency relay, adopts time-division control mode control to switch the feedback signal acquisition channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410097737 CN1780270B (en) | 2004-11-26 | 2004-11-26 | Power resource pool device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410097737 CN1780270B (en) | 2004-11-26 | 2004-11-26 | Power resource pool device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1780270A CN1780270A (en) | 2006-05-31 |
| CN1780270B true CN1780270B (en) | 2011-01-05 |
Family
ID=36770384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410097737 Active CN1780270B (en) | 2004-11-26 | 2004-11-26 | Power resource pool device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1780270B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104049119B (en) * | 2014-06-18 | 2017-01-11 | 南京信息职业技术学院 | Sampling rate self-adaptive dual-channel signal acquisition method and device |
| EP3235202A4 (en) * | 2014-12-19 | 2018-08-15 | ZTE Corporation | Efficient output power combining digital microwave radio system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1137334A (en) * | 1994-10-15 | 1996-12-04 | 诺基亚电信股份公司 | Transmitters for radio telephone base stations |
| CN1346219A (en) * | 2000-09-29 | 2002-04-24 | 华为技术有限公司 | Base station transmitting/receiving machine for global mobile communication system |
| CN1384602A (en) * | 2001-05-08 | 2002-12-11 | 华为技术有限公司 | Adaptive RF digital pre-distortion linearization method and circuit |
-
2004
- 2004-11-26 CN CN 200410097737 patent/CN1780270B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1137334A (en) * | 1994-10-15 | 1996-12-04 | 诺基亚电信股份公司 | Transmitters for radio telephone base stations |
| CN1346219A (en) * | 2000-09-29 | 2002-04-24 | 华为技术有限公司 | Base station transmitting/receiving machine for global mobile communication system |
| CN1384602A (en) * | 2001-05-08 | 2002-12-11 | 华为技术有限公司 | Adaptive RF digital pre-distortion linearization method and circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1780270A (en) | 2006-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9356697B2 (en) | Distributed antenna system and method | |
| CN101283551B (en) | Providing wireless coverage into substantially closed environments | |
| CN1284310C (en) | Method and equipment for transmitting and receiving radio frequency signals from pager | |
| CN101594327B (en) | Multichannel digital predistortion processing device and predistortion processing method | |
| US20060052065A1 (en) | Transmit diversity fo base stations | |
| US8233520B2 (en) | Radio frequency signal transceiver and communication system employing the same | |
| WO2013127141A1 (en) | Digital predistortion processing method and device | |
| US7190932B2 (en) | Circuit arrangement for a predistorted feedback coupling from a transmitter to a receiver in a multi-mode mobile telephone | |
| CN102088427B (en) | Digital predistortion device and method | |
| CN108322413B (en) | Air interface digital predistortion method and system for 5G millimeter wave active antenna array | |
| KR101868965B1 (en) | Remote apparatus of distributed antenna system | |
| CN210867659U (en) | Multi-target real-time telemetering signal receiving system | |
| CN112583360B (en) | Power amplifier amplitude and phase consistency debugging device and method | |
| CN105391456A (en) | Multi-frequency-band Doherty power amplifier system | |
| US20070258719A1 (en) | Remote Unit for Adding Frequency Assignments to a Separation-Type Base Transceiver Station | |
| CN101252714B (en) | Base station carrier wave distributor and communication network composed thereof | |
| CN104184424A (en) | Broadband multi-frequency power amplification method and device | |
| CA2644456C (en) | Dual output digital exciter | |
| CN1780270B (en) | Power resource pool device | |
| CN101141778A (en) | Method and system for implementing subarea overlapping using mirror-image radio frequency unit | |
| CN202190410U (en) | Standing wave detecting device and radio remote unit | |
| CN101601315A (en) | Be used for managing the method and apparatus of mobile communication system sector of base station | |
| CN115277341B (en) | Multichannel broadband intermediate frequency signal amplitude and phase control system and control method thereof | |
| CN1328920C (en) | Method and equipment for implementing digital loop control of feed-forward power amplifier | |
| EP0692918A2 (en) | System and method for cellular digital packet data voice channel selection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |