CN101527588A - Radio-frequency automatic gain control method and system for wireless receiving system - Google Patents
Radio-frequency automatic gain control method and system for wireless receiving system Download PDFInfo
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- CN101527588A CN101527588A CN200810101453A CN200810101453A CN101527588A CN 101527588 A CN101527588 A CN 101527588A CN 200810101453 A CN200810101453 A CN 200810101453A CN 200810101453 A CN200810101453 A CN 200810101453A CN 101527588 A CN101527588 A CN 101527588A
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Abstract
The invention discloses a radio-frequency automatic gain control method for a wireless receiving system, which comprises the following steps: allocating the number of sub-channels of radio resource channels and an adjustable gain grade of each sub-channel according to a wireless resource channel multiplexing mode and a channel combined mode of the wireless receiving system; respectively calculating a radio-frequency automatic gain control value of each sub-channel; and allocating the radio-frequency automatic gain control value in the wireless receiving system before each sub-channel receives signals. Accordingly, the invention also provides a radio-frequency automatic gain control system for the wireless receiving system. Therefore, the method and the system can improve the signal receiving accuracy of the wireless receiving system.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to a kind of radio-frequency automatic gain control method and system of wireless receiving system.
Background technology
Wireless communication technique provides conveniently communication mode to people.Under the wireless telecommunications situation, the transmitting power of the radiofrequency signal that the signal receiver in the wireless receiving system receives and the difference of path loss, the signal that has caused wireless receiving system to receive is strong and weak different.In addition, when move signal transmitting terminal position, also can cause the power of base station received signal to change.If the signal that wireless receiving system receives is too big, may exceed the linear amplification scope of receiver; And the signal that wireless receiving system receives possibly can't detect useful signal when more weak.This has bigger dynamic range and receiving sensitivity with regard to requiring the receiver in the wireless receiving system.
Traditional wireless receiving system auto gain control method normally detects the radio signal power that receives, if it is too big to detect received signal, then amplifier radio frequency AGC (Automatic vlume control, automatic gain control) value is turned down; If it is too little to detect received signal, then the amplifier gain value is heightened.Traditional wireless receiver auto gain control method is not owing to consider that the wireless channel of communication system existence is multiplexing, and the signal power that receives before and after the same channel has correlation, the different channels received signal is characteristics independently, the control effect is bad, and can exert an influence mutually between different channels.
A kind of technology at baseband-detection and adjustment radio frequency receiving gain is arranged in the prior art; This technology is not considered the characteristics of channel multiplexing in the wireless communication system, so can't avoid the interference of uncorrelated interchannel, can't utilize correlated channels information to improve simultaneously yet and adjust accuracy and timely degree.
In summary, existing radio frequency automatic gain control on reality is used, obviously exists inconvenience and defective, so be necessary to be improved.
Summary of the invention
At above-mentioned defective, the object of the present invention is to provide a kind of radio-frequency automatic gain control method and system of wireless receiving system, to improve the accuracy that wireless receiving system receives signal.
To achieve these goals, the invention provides a kind of radio-frequency automatic gain control method of wireless receiving system, comprising:
A. according to wireless receiving system to the channel multiplexing mode of Radio Resource and the compound mode of channel, dispose the number of subchannel of the channel of described Radio Resource, and the adjustable gain grade of each subchannel;
B. calculate its radio frequency automatic gain control value respectively at each subchannel;
C. before opening described each subchannel and carrying out received signal, described radio frequency automatic gain control value is configured in the wireless receiving system.
The radio-frequency automatic gain control method of wireless receiving system according to the present invention, described steps A comprises:
A1. according to the channel multiplexing mode and the channel compound mode of the Radio Resource of wireless receiving system, be M independently subchannel with the channel distribution of described Radio Resource, wherein M is more than or equal to 1;
A2. according to the static sensitivity index request of wireless receiving system, the range of sensitivity of different radio frequency automatic gain control value correspondence and the type of service of each subchannel, the control of radio frequency automatic gain is set at the adjustable radio frequency automatic gain control of N level, and wherein N is more than or equal to 1;
A3., the radio frequency automatic gain control initial value of the radio frequency reception amplifier of wireless receiving system is set.
The radio-frequency automatic gain control method of wireless receiving system according to the present invention, described step B comprises:
B1. to the rf gain of each its received signal of subchannel independent measurement, preserve the rf gain of this each subchannel independent measurement received signal simultaneously;
B2. according to the rf gain of the historical received signal of described each subchannel, the rf gain of current received signal, and the radio frequency automatic gain of described radio frequency reception amplifier control initial value calculates the radio frequency automatic gain control value of described each subchannel.
The radio-frequency automatic gain control method of wireless receiving system according to the present invention according to the communication process of wireless receiving system, switches if channel will take place described each subchannel, also comprises after the described step B2:
B3., channel will soon take place switch, the radio frequency automatic gain control value of the follow-up a plurality of subchannels that switch to is set at the radio frequency automatic gain control value of pairing each subchannel of described follow-up a plurality of subchannels.
The radio-frequency automatic gain control method of wireless receiving system according to the present invention, described step B1 comprises:
B11. when the wireless receiving system operate as normal, obtain the channel composite type of Radio Resource according to the time slot of the current received signal of wireless receiving system, and obtain described wireless receiving system sub-channel types and Sub-Channel Number according to radio frame number;
B12. calculate the received signal power of the antenna opening of wireless receiving system in base band, and, preserve this subchannel independent measurement gain of received signal simultaneously the subchannel independent measurement gain of received signal of described Sub-Channel Number correspondence;
Described step B2 comprises:
B21. obtain the radio frequency automatic gain control value of subchannel arrangements according to each Sub-Channel Number, and this subchannel gain of received signal last time is weighted average gain, obtains new radio frequency automatic gain control value;
B22. revise the radio frequency automatic gain control value of corresponding subchannel according to described new radio frequency automatic gain control value.
The radio-frequency automatic gain control method of wireless receiving system according to the present invention, in global system for mobile communications, described step B3 comprises:
If B31. current channel is a Random Access Channel, follow-up subchannel is independent private subchannel, and the radio frequency automatic gain control value that all independent private subchannels of not working as yet are set is the radio frequency automatic gain control value of current Random Access Channel; And/or
If B32. current channel is independent private subchannel, follow-up subchannel is a traffic sub channel, and the radio frequency automatic gain control value that all traffic sub channels of not working as yet are set is the radio frequency automatic gain control value of current independent private subchannel.
The radio-frequency automatic gain control method of wireless receiving system according to the present invention, radio frame number, timeslot number and the channel configuration of the signal that receives according to wireless receiving system among the described step C, the perhaps subchannel combinations type of next receiving slot is taken out the radio frequency automatic gain control value of radio frequency reception amplifier of the radio frequency automatic gain control value setting wireless receiving system of its corresponding subchannel.
The radio-frequency automatic gain control method of wireless receiving system according to the present invention, in described steps A 2, the adjustable rank of the radio frequency automatic gain of described each subchannel control is identical or different, perhaps,
After described step B22, also comprise the setup time of the radio frequency automatic gain control value that has judged whether wireless receiving system, if not to then returning step B11, if arrived then execution in step C.
In order to realize above-mentioned another purpose, the invention provides a kind of radio frequency auto-gain control system of wireless receiving system, described system comprises:
Channel is provided with module, is used for according to wireless receiving system the channel multiplexing mode of Radio Resource and the compound mode of channel, disposes the number of subchannel of the channel of described Radio Resource, and the adjustable gain grade of each subchannel;
Radio frequency automatic gain control value computing module is used for calculating its radio frequency automatic gain control value respectively at each subchannel;
Radio frequency automatic gain control value configuration module is used for before opening described each subchannel and carrying out received signal described radio frequency automatic gain control value being configured in the wireless receiving system.
According to the radio frequency auto-gain control system of wireless receiving system of the present invention, described channel is provided with module and comprises:
The channel distribution submodule, the channel distribution that is used for Radio Resource is a M independently subchannel, wherein M is more than or equal to 1;
Channel adjustable gain grade classification submodule is used for the radio frequency automatic gain control of each subchannel is set at the adjustable radio frequency automatic gain control of N level, and wherein N is more than or equal to 1;
Initial value is provided with submodule, is used to be provided with the radio frequency automatic gain control initial value of the radio frequency reception amplifier of wireless receiving system; And/or
Described radio frequency automatic gain control value computing module comprises:
Rf gain is provided with submodule; Be used for rf gain, preserve the rf gain of this each subchannel independent measurement received signal simultaneously each its received signal of subchannel independent measurement;
Radio frequency automatic gain control value calculating sub module, be used for according to the rf gain of the historical received signal of described each subchannel, the rf gain of current received signal, and the radio frequency automatic gain of described radio frequency reception amplifier control initial value calculates the radio frequency automatic gain control value of described each subchannel.
The present invention passes through in the received power of considering wireless receiving system, the radio channel allocation of combining wireless communication system, and the compound mode of wireless channel realizes controlling in conjunction with professional radio frequency automatic gain; And utilize wireless channel multiplexed information, the wireless channel compound mode is divided into a plurality of subchannels with independent correlation to wireless channel, the independent respectively AGC value of calculating each subchannel.Simultaneously, to each subchannel in conjunction with communication process, historical received power, current received power, and AGC configuration, the AGC value of the radio frequency reception amplifier of wireless receiving system is set, and only overcoming in the prior art with received power is the low defective of wireless receiving system signal reception accuracy that the foundation of unique adjustment AGC value causes.
Description of drawings
Fig. 1 is the system configuration schematic diagram of the radio frequency automatic gain control of wireless receiving system of the present invention;
Fig. 2 is the system configuration schematic diagram of the radio frequency automatic gain control of the wireless receiving system that provides in the one embodiment of the invention;
Fig. 3 is the radio-frequency automatic gain control method flow chart of wireless receiving system of the present invention;
Fig. 4 is the global system for mobile communications wireless frame structure figure in the one embodiment of the invention;
Fig. 5 is the radio-frequency automatic gain control method flow chart of the global system for mobile communications in the one embodiment of the invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Basic thought of the present invention is: with the channel distribution of wireless communication resources is a plurality of subchannels, respectively these a plurality of subchannels are carried out the calculating of radio frequency automatic gain control value, with when this subchannel is worked, it is the radio frequency automatic gain control value of the radio frequency reception amplifier of wireless receiving system that described sub-channel transmission frequency automatic gain control value is set.
Fig. 1 is the system configuration schematic diagram of the radio frequency automatic gain control of wireless receiving system provided by the invention, and the radio frequency auto-gain control system 1 of this wireless receiving system comprises:
Channel is provided with module 11, is used for according to wireless receiving system the channel multiplexing mode of Radio Resource and the compound mode of channel, disposes the number of subchannel of the channel of described Radio Resource, and the adjustable gain grade of each subchannel.
Usually in Radio Resource, comprise a plurality of communication channels, the communication data that each traffic channel is dissimilar.And that the multiplexing of channel mode also has is multiple, can be time division multiplexing, or space division multiplexing.Channel distribution with Radio Resource is a plurality of subchannels in the present invention, respectively these subchannels is carried out the control of radio frequency automatic gain, can more accurate wireless communication signals be received like this.
Radio frequency automatic gain control value computing module 12 is used for calculating its radio frequency automatic gain control value respectively at each subchannel.Utilize this radio frequency automatic gain control value computing module 12 that each subchannel is calculated its radio frequency automatic gain control value respectively, the radio frequency automatic gain control value of radio frequency reception amplifier a certain time of wireless receiving system is set for this value of following adopted.
Radio frequency automatic gain control value configuration module 13 is used for before opening described each subchannel and carrying out received signal described radio frequency automatic gain control value being configured in the wireless receiving system.The radio frequency automatic gain control value that radio frequency automatic gain control value configuration module 13 calculates radio frequency automatic gain control value computing module 12, before adopting certain subchannel to carry out received signal, be configured in the radio frequency reception amplifier, to realize receiving accurately wireless communication signals.
Fig. 2 is the system configuration schematic diagram of the radio frequency automatic gain control of the wireless receiving system that provides in the one embodiment of the invention, and described channel is provided with module 11 and comprises:
Channel adjustable gain grade classification submodule 112 is used for the radio frequency automatic gain control of each subchannel is set at the adjustable radio frequency automatic gain control of N level, and wherein N is more than or equal to 1; According to the service attribute of each subchannel of dividing by channel distribution submodule 111, and in radio communication the required index that reaches, with the radio frequency automatic gain control of each subchannel be set at be at least 1 grade adjustable.If be divided into a plurality of grades, then the adjustable gain remolding sensitivity of the radio frequency automatic gain of this subchannel control is higher.
Initial value is provided with submodule 113, is used to be provided with the radio frequency automatic gain control initial value of the radio frequency reception amplifier of wireless receiving system; In the present invention, the radio frequency automatic gain control initial value of the radio frequency reception amplifier of wireless receiving system need be set, with this value is benchmark, radio frequency automatic gain control value to each follow-up subchannel is adjusted, this initial value according to the performance of the radio frequency reception amplifier of wireless receiving system according to the standard setting.And/or
Described radio frequency automatic gain control value computing module 12 comprises:
Rf gain is provided with submodule 121; Be used for rf gain, preserve the rf gain of this each subchannel independent measurement received signal simultaneously each its received signal of subchannel independent measurement; By rf gain the current rf gain that submodule 121 can be measured each subchannel is set, and this current rf gain is preserved.
Radio frequency automatic gain control value calculating sub module 122, be used for according to the rf gain of the historical received signal of described each subchannel, the rf gain of current received signal, and the radio frequency automatic gain of described radio frequency reception amplifier control initial value calculates the radio frequency automatic gain control value of described each subchannel.
Radio frequency automatic gain control value calculating sub module 122 is provided with the rf gain of the historical received signal of each subchannel that submodule 121 preserves, the rf gain of current received signal according to rf gain, and the radio frequency automatic gain of described radio frequency reception amplifier control initial value calculates the radio frequency automatic gain control value of each subchannel.Obtain this radio frequency automatic gain control value, when each subchannel reception wireless communication signals then can be set, the radio frequency automatic gain control value of radio frequency reception amplifier, the accuracy of the reception wireless signal of raising wireless receiving system, and sensitivity.
Fig. 3 shows the radio-frequency automatic gain control method of wireless receiving system provided by the invention, and described method realizes by Fig. 1 or radio frequency auto-gain control system 1 shown in Figure 2, is described below:
Among the step S301, to the channel multiplexing mode of Radio Resource and the compound mode of channel, dispose the number of subchannel of the channel of described Radio Resource according to wireless receiving system, and the adjustable gain grade of each subchannel.In this step, by channel be provided with module 11 according to wireless receiving system to the channel multiplexing mode of Radio Resource and the compound mode of channel, dispose the number of subchannel of the channel of described Radio Resource, and the adjustable channel gain grade of each subchannel.
For example, the channel of existing Radio Resource is to carry out data service communication, or independent voice communications services, then the channel of this Radio Resource can be divided into two classes or greater than the subchannel of two classes.For the wider communication traffic subchannel of wireless signal scope, can with the adjustable gain grade classification of this subchannel a plurality of grades.
Among the step S302, calculate its radio frequency automatic gain control value respectively at each subchannel; In this step, calculate the radio frequency automatic gain control value of each subchannel respectively by radio frequency automatic gain control value computing module 12.Because in step S301, it has been subchannel with the channel distribution of Radio Resource that channel is provided with module 11, then be that each subchannel independently calculates its radio frequency automatic gain control value,, adjust the radio frequency automatic gain control value of radio frequency reception amplifier with when this channel is worked.
Among the step S303, before opening described each subchannel and carrying out received signal, described radio frequency automatic gain control value is configured in the wireless receiving system.In this step, dispose corresponding radio frequency automatic gain control value in the radio frequency reception amplifier by radio frequency automatic gain control value configuration module 13.
In one embodiment of the invention, described step S301 comprises:
Step a. channel distribution submodule 111 is according to the channel multiplexing mode and the channel compound mode of the Radio Resource of wireless receiving system, is M independently subchannel with the channel distribution of described Radio Resource, and wherein M is more than or equal to 1.With the channel distribution of Radio Resource is more than or equal to 1 subchannel, helps carrying out the control of radio frequency automatic gain according to different types of service and channel compound mode.
Step b. channel adjustable gain grade classification submodule 112 is according to the static sensitivity index request of wireless receiving system, the range of sensitivity of different radio frequency automatic gain control value correspondence, and the type of service of each subchannel, the control of radio frequency automatic gain is set at the adjustable radio frequency automatic gain control of N level, wherein, N is more than or equal to 1; In the present invention, if the static sensitivity index request of wireless receiving system is than higher, and the scope of the sensitivity of different radio frequency automatic gain control value correspondence is wider, the control of radio frequency automatic gain can be set at multistage adjustable rf gain, like this, can more accurate it be controlled.And, the adjustable gain control of one-level can only be set then if the type of service of subchannel does not need the radio frequency automatic gain control of degree of precision.
The step c initial value is provided with the radio frequency automatic gain control initial value that submodule 113 is provided with the radio frequency reception amplifier of wireless receiving system.For the control of radio frequency reception amplifier, the radio frequency automatic gain control initial value of an acquiescence need be set.
In one embodiment of the invention, described step S302 comprises:
Steps d. rf gain is provided with the rf gain of submodule 121 to each its received signal of subchannel independent measurement, preserves the rf gain of this each subchannel independent measurement received signal simultaneously;
Step e. radio frequency automatic gain control value calculating sub module 122 is according to the rf gain of the historical received signal of described each subchannel, the rf gain of current received signal, and the radio frequency automatic gain of described radio frequency reception amplifier control initial value calculates the radio frequency automatic gain control value of described each subchannel.In the present invention, radio frequency automatic gain control value for each subchannel is to combine polytype reference data, can optimize and revise the radio frequency automatic gain control value of radio frequency reception amplifier so more accurately according to the transmission data conditions of each subchannel.
In another embodiment of the present invention, according to the communication process of wireless receiving system, switch if channel will take place described each subchannel, also comprise after the described step e:
Channel will soon take place and switch in step f., and the radio frequency automatic gain control value of the follow-up a plurality of subchannels that switch to is set at the radio frequency automatic gain control value of pairing each subchannel of described follow-up a plurality of subchannels.
Be about to take place the situation that channel switches to follow-up a plurality of subchannels for mentioning in this step, the also radio frequency automatic gain control value of follow-up a plurality of subchannels that can preferably contingent channel be switched to is set at the radio frequency automatic gain control value of pairing each subchannel of described follow-up a plurality of subchannels.With dispose those all might activate and the radio frequency automatic gain control value of unactivated subchannel still.
In another embodiment of the present invention, described steps d comprises:
And described step e comprises:
Step e1. obtains the radio frequency automatic gain control value of subchannel arrangements according to each Sub-Channel Number, and this subchannel gain of received signal last time is weighted average gain, obtains new radio frequency automatic gain control value; In this step, according to last time the subchannel gain of received signal be weighted average gain, the radio frequency automatic gain control value of Huo Deing more objectively reflects the subchannel gain of received signal like this.
Step e2. revises the radio frequency automatic gain control value of corresponding subchannel according to described new radio frequency automatic gain control value.
In another embodiment of the present invention, in global system for mobile communications, described step f comprises:
If the current channel of step f1. is RACH (Random access channel, Random Access Channel), follow-up subchannel is SDCCH (Standalone dedicated control channel, independent private subchannel), the radio frequency automatic gain control value that all independent private subchannels of not working as yet are set is the radio frequency automatic gain control value of current Random Access Channel; And/or
If the current channel of step f2. is independent private subchannel, follow-up subchannel is TCH (Trafficchannel, traffic sub channel), the radio frequency automatic gain control value that all traffic sub channels of not working as yet are set is the radio frequency automatic gain control value of current independent private subchannel.
And in the present invention, radio frame number, timeslot number and the channel configuration of the signal that receives according to wireless receiving system among the described step S303, the perhaps subchannel combinations type of next receiving slot is taken out the radio frequency automatic gain control value of radio frequency reception amplifier of the radio frequency automatic gain control value setting wireless receiving system of its corresponding subchannel.Owing to might be time division multiplexing, or space division multiplexing for multiplexing of channel, therefore, in the present invention can corresponding different multiplex modes, implement the radio frequency automatic gain control value setting means of different wireless receiving systems.
And in above-mentioned a plurality of embodiment, the adjustable rank of the radio frequency automatic gain of each subchannel among described step b control is identical or different, perhaps,
After described step e2, also comprise the setup time of the radio frequency automatic gain control value that has judged whether wireless receiving system, if not to then returning steps d 1, if arrived then execution in step S303.Because Radio Resource might be divided into a plurality of subchannels, under the roughly the same situation of a plurality of subchannel received signal scopes, their adjustable gain grade can be identical; If differ more then and can be set to different brackets.In the present invention, radio frequency automatic gain control value configuration cycle can also be set, to adapt to the requirement to wireless receiving system, the size in this cycle can be according to accuracy and the sensitivity setting to wireless receiving system.
In one embodiment of the invention, as shown in Figure 4, be GSM (Global Systemfor Mobile Communications, global system for mobile communications) the wireless frame structure figure among this embodiment; As shown in Figure 5, be the automatic ride gain control method of the radio frequency flow chart of the global system for mobile communications among this embodiment, described method realizes by Fig. 1 or radio frequency auto-gain control system 1 shown in Figure 2.Radio frames among Fig. 4 comprises the uplink and downlink signal, and radio frames i and radio frames i+1, and 8 time slots are respectively arranged.
Among the step S501, the number of combination of the channel of channel distribution submodule 111 allocation radio resources and subchannel, channel adjustable gain grade classification submodule 112 is set at N level adjustable gain grade with the rf gain of each subchannel.In this embodiment according to the static sensitivity index request of receiver and the range of sensitivity of different radio frequency yield value correspondence, with the rf gain level setting of each subchannel be 3 grades adjustable.And gsm system has 8 time slots, the channel configuration situation is that 0 time slot is BCCH (Broadcast controlchannel, Broadcast Control Channel), 1 time slot is SDCCH (Standalone dedicated control channel, Separate Dedicated Control Channel), other time slots are TCH (Traffic channel, Traffic Channel).The BCCH that disposes 0 time slot is 1 subchannel, and the SDCCH of 1 time slot is 8 subchannels, and the TCH of other time slots respectively is 1 subchannel.
Among the step S502, initial value is provided with the initial frequency automatic gain control value that submodule 113 is provided with the radio frequency reception amplifier.
After the receiving system of gsm system is working properly, need calculate the antenna opening received signal power.According to the antenna opening received signal power that obtains, in conjunction with the radio frequency automatic gain control value of current configuration, calculate the rf gain value that current subchannel should be revised.
Among the step S503, rf gain is provided with submodule 121 according to radio frame number, timeslot number, and channel configuration obtains Sub-Channel Number.At first obtain the channel composite type, obtain sub-channel types according to radio frame number Fn again, Sub-Channel Number according to current receiving slot.Obtain the AGC value of subchannel arrangements again according to Sub-Channel Number, and the gain of received signal of last time, the weighted average gain, thus acquire new AGC set point.
Among the step S504, rf gain is provided with submodule 121 calculates the antenna opening of wireless receiving system at the base band mouth the power of received signal.
Among the step S505, radio frequency automatic gain control value calculating sub module 122 calculates the radio frequency automatic gain control value that revise, is saved in corresponding subchannel buffer memory.
Among the step S506, judge whether follow-up subchannel; If then execution in step S507 is arranged, if there is not then execution in step S509; In the process of received signal, if last subchannel of last time slot has not so then had follow-up subchannel.Otherwise, then do not have follow-up subchannel.
Among the step S507, dispose that all might activate and the radio frequency automatic gain control value of unactivated subchannel still.Described channel switch be as the P channel switch to Bi (i=1 ..., N), all N the Bi subchannels that may switch to are set the result of calculation that the AGC values are the A subchannel.
In this embodiment, if last channel is the RACH channel, because system may activate the SDCCH channel, disposing all SDCCH subchannels that do not have to activate is current channel AGC value; If last channel is the SDCCH channel, because system may activate the TCH channel, setting all un-activation TCH subchannels simultaneously is current channel AGC value.
Among the step S508, judged whether the configuration of radio frequency automatic gain control value constantly; Be execution in step S509 then, otherwise return step S503, continue the power calculation of current channel received signal.In the present invention, radio frequency automatic gain control value configuration cycle can also be set, and to adapt to the requirement to wireless receiving system, the size in this cycle can be according to accuracy and the sensitivity setting to wireless receiving system, wait for this cycle then, just be configured to the AGC value of radio frequency reception amplifier.
Among the step S509, according to radio frame number, timeslot number, and channel configuration obtains the correct radio frequency automatic gain control value of subchannel, and this value is configured to the radio frequency reception amplifier.According to radio frame number, timeslot number, channel configuration, obtain the subchannel combinations type of next receiving slot, from the subchannel AGC set point of correspondence, take out and be set to receiver.
In sum, the present invention passes through in the received power of considering wireless receiving system, the radio channel allocation of combining wireless communication system, and the compound mode of wireless channel realizes controlling in conjunction with professional radio frequency automatic gain; And utilize wireless channel multiplexed information, the wireless channel compound mode is divided into a plurality of subchannels with independent correlation to wireless channel, the independent respectively AGC value of calculating each subchannel.Simultaneously, to each subchannel in conjunction with communication process, historical received power, current received power, and AGC configuration, the AGC value of the radio frequency reception amplifier of wireless receiving system is set, and only overcoming in the prior art with received power is the low defective of wireless receiving system signal reception accuracy that the foundation of unique adjustment AGC value causes.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (10)
1, a kind of radio-frequency automatic gain control method of wireless receiving system is characterized in that, comprising:
A. according to wireless receiving system to the channel multiplexing mode of Radio Resource and the compound mode of channel, dispose the number of subchannel of the channel of described Radio Resource, and the adjustable gain grade of each subchannel;
B. calculate its radio frequency automatic gain control value respectively at each subchannel;
C. before opening described each subchannel and carrying out received signal, described radio frequency automatic gain control value is configured in the wireless receiving system.
2, the radio-frequency automatic gain control method of wireless receiving system according to claim 1 is characterized in that, described steps A comprises:
A1. according to the channel multiplexing mode and the channel compound mode of the Radio Resource of wireless receiving system, be M independently subchannel with the channel distribution of described Radio Resource, wherein M is more than or equal to 1;
A2. according to the static sensitivity index request of wireless receiving system, the range of sensitivity of different radio frequency automatic gain control value correspondence and the type of service of each subchannel, the control of radio frequency automatic gain is set at the adjustable radio frequency automatic gain control of N level, and wherein N is more than or equal to 1;
A3., the radio frequency automatic gain control initial value of the radio frequency reception amplifier of wireless receiving system is set.
3, the radio-frequency automatic gain control method of wireless receiving system according to claim 2 is characterized in that, described step B comprises:
B1. to the rf gain of each its received signal of subchannel independent measurement, preserve the rf gain of this each subchannel independent measurement received signal simultaneously;
B2. according to the rf gain of the historical received signal of described each subchannel, the rf gain of current received signal, and the radio frequency automatic gain of described radio frequency reception amplifier control initial value calculates the radio frequency automatic gain control value of described each subchannel.
4, the radio-frequency automatic gain control method of wireless receiving system according to claim 3 is characterized in that, according to the communication process of wireless receiving system, switches if channel will take place described each subchannel, also comprises after the described step B2:
B3., channel will soon take place switch, the radio frequency automatic gain control value of the follow-up a plurality of subchannels that switch to is set at the radio frequency automatic gain control value of pairing each subchannel of described follow-up a plurality of subchannels.
5, the radio-frequency automatic gain control method of wireless receiving system according to claim 3 is characterized in that, described step B1 comprises:
B11. when the wireless receiving system operate as normal, obtain the channel composite type of Radio Resource according to the time slot of the current received signal of wireless receiving system, and obtain described wireless receiving system sub-channel types and Sub-Channel Number according to radio frame number;
B12. calculate the received signal power of the antenna opening of wireless receiving system in base band, and, preserve this subchannel independent measurement gain of received signal simultaneously the subchannel independent measurement gain of received signal of described Sub-Channel Number correspondence;
Described step B2 comprises:
B21. obtain the radio frequency automatic gain control value of subchannel arrangements according to each Sub-Channel Number, and this subchannel gain of received signal last time is weighted average gain, obtains new radio frequency automatic gain control value;
B22. revise the radio frequency automatic gain control value of corresponding subchannel according to described new radio frequency automatic gain control value.
6, the radio-frequency automatic gain control method of wireless receiving system according to claim 4 is characterized in that, in global system for mobile communications, described step B3 comprises:
If B31. current channel is a Random Access Channel, follow-up subchannel is independent private subchannel, and the radio frequency automatic gain control value that all independent private subchannels of not working as yet are set is the radio frequency automatic gain control value of current Random Access Channel; And/or
If B32. current channel is independent private subchannel, follow-up subchannel is a traffic sub channel, and the radio frequency automatic gain control value that all traffic sub channels of not working as yet are set is the radio frequency automatic gain control value of current independent private subchannel.
7, the radio-frequency automatic gain control method of wireless receiving system according to claim 1, it is characterized in that, radio frame number, timeslot number and the channel configuration of the signal that receives according to wireless receiving system among the described step C, the perhaps subchannel combinations type of next receiving slot is taken out the radio frequency automatic gain control value of radio frequency reception amplifier of the radio frequency automatic gain control value setting wireless receiving system of its corresponding subchannel.
8, the radio-frequency automatic gain control method of wireless receiving system according to claim 5 is characterized in that, in described steps A 2, the adjustable rank of the radio frequency automatic gain of described each subchannel control is identical or different, perhaps,
After described step B22, also comprise the setup time of the radio frequency automatic gain control value that has judged whether wireless receiving system, if not to then returning step B11, if arrived then execution in step C.
9, a kind of realization is characterized in that as the radio frequency auto-gain control system of method as described in any one of the claim 1～8 described system comprises:
Channel is provided with module, is used for according to wireless receiving system the channel multiplexing mode of Radio Resource and the compound mode of channel, disposes the number of subchannel of the channel of described Radio Resource, and the adjustable gain grade of each subchannel;
Radio frequency automatic gain control value computing module is used for calculating its radio frequency automatic gain control value respectively at each subchannel;
Radio frequency automatic gain control value configuration module is used for before opening described each subchannel and carrying out received signal described radio frequency automatic gain control value being configured in the wireless receiving system.
10, the system of the radio-frequency automatic gain control method of realization wireless receiving system according to claim 9 is characterized in that, described channel is provided with module and comprises:
The channel distribution submodule, the channel distribution that is used for Radio Resource is a M independently subchannel, wherein M is more than or equal to 1;
Channel adjustable gain grade classification submodule is used for the radio frequency automatic gain control of each subchannel is set at the adjustable radio frequency automatic gain control of N level, and wherein N is more than or equal to 1;
Initial value is provided with submodule, is used to be provided with the radio frequency automatic gain control initial value of the radio frequency reception amplifier of wireless receiving system; And/or
Described radio frequency automatic gain control value computing module comprises:
Rf gain is provided with submodule; Be used for rf gain, preserve the rf gain of this each subchannel independent measurement received signal simultaneously each its received signal of subchannel independent measurement;
Radio frequency automatic gain control value calculating sub module, be used for according to the rf gain of the historical received signal of described each subchannel, the rf gain of current received signal, and the radio frequency automatic gain of described radio frequency reception amplifier control initial value calculates the radio frequency automatic gain control value of described each subchannel.
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| CN200810101453A CN101527588A (en) | 2008-03-06 | 2008-03-06 | Radio-frequency automatic gain control method and system for wireless receiving system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102056281A (en) * | 2009-11-10 | 2011-05-11 | 中兴通讯股份有限公司 | Method and device for realizing automatic gain control of packet service |
| CN102223192A (en) * | 2011-06-15 | 2011-10-19 | 北京交通大学 | Method and device for constructing composite small-scale radio channel model of high-speed rail |
| WO2013004017A1 (en) * | 2011-07-07 | 2013-01-10 | 中兴通讯股份有限公司 | Method and system for implementing automatic gain control |
| CN111224723A (en) * | 2019-12-24 | 2020-06-02 | 展讯通信（上海）有限公司 | Calibration method and system of radio frequency front-end module, electronic equipment and storage medium |
-
2008
- 2008-03-06 CN CN200810101453A patent/CN101527588A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102056281A (en) * | 2009-11-10 | 2011-05-11 | 中兴通讯股份有限公司 | Method and device for realizing automatic gain control of packet service |
| CN102223192A (en) * | 2011-06-15 | 2011-10-19 | 北京交通大学 | Method and device for constructing composite small-scale radio channel model of high-speed rail |
| CN102223192B (en) * | 2011-06-15 | 2014-04-02 | 北京交通大学 | Method and device for constructing composite small-scale radio channel model of high-speed rail |
| WO2013004017A1 (en) * | 2011-07-07 | 2013-01-10 | 中兴通讯股份有限公司 | Method and system for implementing automatic gain control |
| CN111224723A (en) * | 2019-12-24 | 2020-06-02 | 展讯通信（上海）有限公司 | Calibration method and system of radio frequency front-end module, electronic equipment and storage medium |
| CN111224723B (en) * | 2019-12-24 | 2022-02-15 | 展讯通信（上海）有限公司 | Calibration method and system of radio frequency front-end module, electronic equipment and storage medium |
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Application publication date: 20090909 |