CN101826904A - Method for realizing system capacity expansion by utilizing polarization diversity receiving - Google Patents
Method for realizing system capacity expansion by utilizing polarization diversity receiving Download PDFInfo
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- CN101826904A CN101826904A CN201010153797A CN201010153797A CN101826904A CN 101826904 A CN101826904 A CN 101826904A CN 201010153797 A CN201010153797 A CN 201010153797A CN 201010153797 A CN201010153797 A CN 201010153797A CN 101826904 A CN101826904 A CN 101826904A
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Abstract
The invention provides a method for realizing system capacity expansion by utilizing polarization diversity receiving, which can rapidly and effectively realize system temporary capacity expansion and realize N times of capacity expansion under the condition of N multiples of polarization diversity. The invention realizes single base station multifrequency point processing and realizes system temporary capacity expansion by utilizing a polarization diversity receiving structure and modulation signal processing; N radio frequency receiving branches exist in polarization diversity receiving and can respectively and independently receive different frequency point signals; and under the condition of polarization diversity receiving, the same frequency point signal is received by the N branches, the obtained N paths of signals are output to the inside of a processor through an A/D for multipath combined processing, and when system temporary capacity expansion is needed, a signal processing flow inside the processor is switched through software, and the receiving frequency points of the N radio frequency receiving branches are modified. The invention has the purposes of rapidly and effectively realizing system temporary capacity expansion and realizing N times of capacity expansion under the condition of N multiples of polarization diversity, better satisfies the objective requirement of social public safety for a clustering system and has good economic effect.
Description
(1) technical field
The present invention relates to the communication technology, is exactly a kind of method of utilizing diversity reception to realize System Expansion specifically.
(2) background technology
We find to the digital cluster system demand analysis time, and almost used digital cluster system purposes all concentrates on and concerns the social public security aspect, have therefore proposed higher requirement for the digital cluster system user capacity.Existing digital cluster system increases user capacity and can only be solved by increasing the base station, when this solution is given prominence to incident in the reply social safety, is unpractical.Existing digital cluster system proposes also better effectively that scheme realizes interim dilatation, can only adopt to set up interim base station and solved.The mode that increases the base station realizes the interim dilatation scheme of system, when the accident of reply social public security, aspect ageing is implacable, can not realize at a high speed, effectively realize the temporary system dilatation having inferior positions such as expansion method complexity, very flexible, cost height.
(3) summary of the invention
The object of the present invention is to provide a kind of interim dilatation of system that has at a high speed, effectively realizes, realize that under the heavy diversity situation of N the diversity reception that utilizes of N times of dilatation realizes the method for System Expansion.
The object of the present invention is achieved like this: utilize diversity reception to realize that System Expansion is actually the single base station of realization multifrequency point and handles, utilize diversity reception structure and modulation signal to handle the interim dilatation of realization system; There is N bar radio frequency receiving branch in diversity reception, can distinguish independently to receive the different frequent points signal; Under the diversity reception situation, N bar branch road receives same frequency signal, the N road signal that obtains outputs to processor inside by the A/D employing and carries out multichannel merging processing, when needing the interim dilatation of system by software handoff processor internal signal handling process and revise the reception frequency that radio frequency receives N bar branch road, make it to be operated in different frequencies, realize inserting the purpose of multifrequency point; Original flow process with diversity on processor internal signal handling process has certain difference, promptly change the structure of inner multichannel parallel processing into, each channel demodulation is handled complementary the interference, aspect modulation, conventional single-frequency point intermediate frequency Modulation is adopted in diversity reception, and when multichannel is handled, modulated structure becomes the multifrequency point modulation, realize that multifrequency point modulates simultaneously, finish in the dilatation pattern base station that places an order that multifrequency point receives, the multifrequency point modulation, realize System Expansion.
A kind of method of utilizing diversity reception to realize System Expansion of the present invention, proposed based on utilizing existing diversity reception structure to realize the scheme of the interim dilatation of digital cluster system, have and at a high speed, effectively realize the interim dilatation of system, under the heavy diversity situation of N, realize the purpose of N times of dilatation, satisfy social public security preferably to the objective requirement of group system and have good economic benefits.
(4) description of drawings
Fig. 1 realizes the interim dilatation structure chart of system for the diversity reception structure of utilizing of the present invention;
Fig. 2 is a group system of the present invention base station dilatation software flow pattern;
Fig. 3 is an if digitization structure chart of the present invention;
Fig. 4 is a multifrequency point intermediate frequency Modulation structure chart of the present invention;
Fig. 5 is many intermediate frequencies emitter junction composition of the present invention.
(5) embodiment
The invention will be further described for example below in conjunction with accompanying drawing.
Embodiment 1: in conjunction with Fig. 1-Fig. 5, a kind of method of utilizing diversity reception to realize System Expansion of the present invention, utilize diversity reception to realize that System Expansion is actually the single base station of realization multifrequency point and handles, utilize diversity reception structure and modulation signal to handle the interim dilatation of realization system; There is N bar radio frequency receiving branch in diversity reception, can distinguish independently to receive the different frequent points signal; Under the diversity reception situation, N bar branch road receives same frequency signal, the N road signal that obtains outputs to processor inside by the A/D employing and carries out multichannel merging processing, when needing the interim dilatation of system by software handoff processor internal signal handling process and revise the reception frequency that radio frequency receives N bar branch road, make it to be operated in different frequencies, realize inserting the purpose of multifrequency point; Original flow process with diversity on processor internal signal handling process has certain difference, promptly change the structure of inner multichannel parallel processing into, each channel demodulation is handled complementary the interference, aspect modulation, conventional single-frequency point intermediate frequency Modulation is adopted in diversity reception, and when multichannel is handled, modulated structure becomes the multifrequency point modulation, realize that multifrequency point modulates simultaneously, finish in the dilatation pattern base station that places an order that multifrequency point receives, the multifrequency point modulation, realize System Expansion.
Embodiment 2: in conjunction with Fig. 1-Fig. 5, the present invention utilizes diversity reception to realize that System Expansion is actually the single base station of realization multifrequency point and handles, and is therefore mainly being introduced aspect reception, the modulation signal handling process:
(1) utilize the diversity reception structure to realize the interim dilatation structure of system
There is N bar radio frequency receiving branch in diversity reception, can distinguish independently to receive the different frequent points signal.Under the diversity reception situation, N bar branch road receives same frequency signal, and the N road signal that obtains outputs to processor inside by the A/D employing and carries out multichannel merging processing.When needing the interim dilatation of system, by software handoff processor internal signal handling process and revise the reception frequency that radio frequency receives N bar branch road, make it to be operated in different frequencies, realize inserting the purpose of multifrequency point.Original flow process with diversity on processor internal signal handling process has certain difference.Both changed the structure of inner multichannel parallel processing into, each channel demodulation is handled complementary the interference.Aspect modulation, conventional single-frequency point intermediate frequency Modulation is adopted in diversity reception.And when multichannel was handled, modulated structure became the multifrequency point modulation, realized the purpose that multifrequency point is modulated simultaneously.As seen realize the purpose of multifrequency point reception, modulation in the dilatation pattern base station that places an order, therefore realized the purpose of System Expansion.
Base station dilatation software switching flow is as shown in Figure 2: on software by the conversion that diversity reception and multichannel handle that is achieved of hand-off process N road signal processing flow.When no accident, group system works in the diversity reception state; When the reply emergency, trunked base station works in the multichannel processing mode.Realize changing the system works pattern flexibly with this.
(2) the if digitization structure as shown in Figure 3, trunked base station utilizes N road radio frequency to receive the radiofrequency signal that link receives the N channel uplink, be the fixing intermediate-freuqncy signal in N road by two-stage analog frequency mixing circuit conversion, handle by many A/D samplings and supplied with digital signal then and carry out demodulation process.Wherein the local frequency of the two-stage local oscillator module of each branch road generation obtains by processor control PLL chip, and realization that can be more convenient by the working frequency points that changes the two-stage mixting circuit receives same frequency or a plurality of frequency signal simultaneously.
(3) intermediate frequency Modulation
Multifrequency point intermediate frequency Modulation structure as shown in Figure 4, at under the dilatation pattern, the code element of the N channel that demodulates is carried out framing separately under the control of protocol stack, intermediate frequency transmitting chain by separately obtains the corresponding digital medium-frequency signal of each channel then, intermediate-freuqncy signal stack with N channel at last merges, and conversion is launched by the radio circuit up-conversion through D/A.
(4) wide band radio-frequency emitting structural
After the diversity reception pattern transferred the multichannel tupe to, the input radio frequency circuit signal was the intersection of a plurality of channel intermediate-freuqncy signals, and the emission path need be handled the multi-channel rf signal simultaneously.Yet for frequency mixer, these nonlinear devices of power amplifier, signal as two or more different frequencies is added to these nonlinear devices, nonlinear change will produce many combination frequency compositions, be scattered in the interference that causes in the neighboring trace frequency range useful channel, be called for short Intermodulation Interference.Third order intermodulation is a serious frequency component the most in the Intermodulation Interference, easily useful signal is caused interference.The size of intermodulation product mainly is the nonlinear degree that depends on radio-frequency devices, so will reduce the linearity and rational selecting circuit structure and operating state that Intermodulation Interference just needs to guarantee radio-frequency (RF) component
Many intermediate frequency emission radio frequency schemes shown in Fig. 5, Linear Power Amplifier partly adopts feedforward and analog predistortion technology to combine, and level increases a narrow band filter behind power amplifier, suitably adjusts the interval between the output signal, utilizes the characteristic of band pass filter to realize the inhibition of intermodulation product.Multicarrier third order intermodulation decay can realize the inhibition that 65dBc is above.
Claims (1)
1. a method of utilizing diversity reception to realize System Expansion is characterized in that: utilize diversity reception to realize that System Expansion is actually the single base station of realization multifrequency point and handles, utilize diversity reception structure and modulation signal to handle the interim dilatation of realization system; There is N bar radio frequency receiving branch in diversity reception, can distinguish independently to receive the different frequent points signal; Under the diversity reception situation, N bar branch road receives same frequency signal, the N road signal that obtains outputs to processor inside by the A/D employing and carries out multichannel merging processing, when needing the interim dilatation of system by software handoff processor internal signal handling process and revise the reception frequency that radio frequency receives N bar branch road, make it to be operated in different frequencies, realize inserting the purpose of multifrequency point; Original flow process with diversity on processor internal signal handling process has certain difference, promptly change the structure of inner multichannel parallel processing into, each channel demodulation is handled complementary the interference, aspect modulation, conventional single-frequency point intermediate frequency Modulation is adopted in diversity reception, and when multichannel is handled, modulated structure becomes the multifrequency point modulation, realize that multifrequency point modulates simultaneously, finish in the dilatation pattern base station that places an order that multifrequency point receives, the multifrequency point modulation, realize System Expansion.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011076076A1 (en) * | 2009-12-25 | 2011-06-30 | 华为技术有限公司 | Multi-path reception apparatus, receiver and base station |
| CN102170715A (en) * | 2011-03-30 | 2011-08-31 | 东方通信股份有限公司 | Mobile communication base station transceiver employing software radio technology and signal processing method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1489836A (en) * | 2001-10-31 | 2004-04-14 | ���µ�����ҵ��ʽ���� | Radio transmission apparatus and radio communication method |
| CN1620765A (en) * | 2002-01-31 | 2005-05-25 | 埃沃柳姆公司 | Base station for a telecommunication system |
| CN1717878A (en) * | 2002-11-26 | 2006-01-04 | 皇家飞利浦电子股份有限公司 | Low-IF pre-preamble antenna diversity receiver |
| CN101534141A (en) * | 2009-04-15 | 2009-09-16 | 华为技术有限公司 | A method and device supporting the coexistence of multiband of radio-frequency module |
-
2010
- 2010-04-23 CN CN201010153797A patent/CN101826904A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1489836A (en) * | 2001-10-31 | 2004-04-14 | ���µ�����ҵ��ʽ���� | Radio transmission apparatus and radio communication method |
| CN1620765A (en) * | 2002-01-31 | 2005-05-25 | 埃沃柳姆公司 | Base station for a telecommunication system |
| CN1717878A (en) * | 2002-11-26 | 2006-01-04 | 皇家飞利浦电子股份有限公司 | Low-IF pre-preamble antenna diversity receiver |
| CN101534141A (en) * | 2009-04-15 | 2009-09-16 | 华为技术有限公司 | A method and device supporting the coexistence of multiband of radio-frequency module |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011076076A1 (en) * | 2009-12-25 | 2011-06-30 | 华为技术有限公司 | Multi-path reception apparatus, receiver and base station |
| CN102170715A (en) * | 2011-03-30 | 2011-08-31 | 东方通信股份有限公司 | Mobile communication base station transceiver employing software radio technology and signal processing method |
| CN102170715B (en) * | 2011-03-30 | 2013-11-06 | 东方通信股份有限公司 | Mobile communication base station transceiver employing software radio technology and signal processing method |
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