CN206461600U

CN206461600U - A kind of small base station receiver

Info

Publication number: CN206461600U
Application number: CN201621395666.2U
Authority: CN
Inventors: 冯波; 刘岩
Original assignee: Tianjin Yi Heng Information Technology Co Ltd
Current assignee: Tianjin Yi Heng Information Technology Co Ltd
Priority date: 2016-12-19
Filing date: 2016-12-19
Publication date: 2017-09-01
Anticipated expiration: 2026-12-19

Abstract

The utility model discloses a kind of small base station receiver, its technical characteristics is：Made an uproar filter and leading trigger including analog-digital converter, bottom；The input connection input signal of the analog-digital converter, the make an uproar input of filter of the bottom is connected with the output end of the analog-digital converter, the make an uproar output end of filter of the input of the leading trigger and the mould bottom is connected, the output end connection signal output part of the leading trigger.The utility model first marks initial bottom noise cancellation signal by bottom filter of making an uproar, then excludes the interference in the region that there may be targeting signal, and more accurate processing can be carried out to the correlated series of accidental access signal；Effective determination by leading trigger to the scope of targeting signal that may be present, can more accurately collect the power of targeting signal that may be present, so that the false alarm rate and false alarm rate of small base station receiver are lower, it is easier to reach requirement as defined in agreement.

Description

A kind of small base station receiver

Technical field

The utility model belongs to wireless communication technology field, especially a kind of small base station receiver.

Background technology

In LTE (Long Term Evolution, Long Term Evolution) up-link, RACH be used for After the start of family or lose the random access procedure carried out after uplink synchronous.RACH uses ZC sequences (Zadoff-Chu sequence), can tell different users' by the correlated results of the different shifted versions of the different roots of sequence Targeting signal.

In small base station (smallcell) application scenarios, to false alarm rate, the requirement of false alarm rate is strict, and prior art It is merely the requirement that is difficult to meet agreement to judging that window is monitored by one threshold value of setting.If the threshold value is set It is too high, easily there is false alarm, if threshold value setting is too low, false-alarm easily occur.Furthermore, prior art does not take into full account Make an uproar on earth the influence brought, easily channel bottom is made an uproar and is mistaken for targeting signal, false alarm or false-alarm is caused.Therefore, in small base station In application scenarios, the targeting signal detection method anti-noise ability of prior art is weak, it is difficult to safeguard agreement to false alarm rate, false alarm rate It is required that.

The content of the invention

The purpose of this utility model is to overcome the deficiencies in the prior art being capable of effective exclusive PCR, accurate there is provided one kind Collect signal, ensure the small base station receiver of low false alarm rate and false alarm rate.

The utility model solves its technical problem and takes following technical scheme to realize：

A kind of small base station receiver, including analog-digital converter, bottom are made an uproar filter and leading trigger；The simulation number The input connection input signal of word converter, the bottom is made an uproar the input of filter and the output of the analog-digital converter End is connected, and the make an uproar output end of filter of input and the bottom of the leading trigger is connected, the leading trigger Output end connection signal output part.

Bottom filter of making an uproar is made an uproar threshold calculator and the first decision device the bottom of including, and the leading trigger includes power meter With the second decision device, the make an uproar input of threshold calculator of the bottom is connected with the output end of the analog-digital converter, institute The make an uproar output end of threshold calculator of the input and the bottom for stating the first decision device is connected；The input of the power meter with it is described First decision device is connected, and the input of second decision device is connected with the output end of the power meter, second judgement The output end output decision signal of device.

Also include time-delay calculation device, the input of the time-delay calculation device is connected with the output end of leading trigger, should The output end connection signal output part of time-delay calculation device.

Also include window determinant, the window determinant respectively with first decision device, the second decision device, time-delay calculation Device is connected, and exports result of determination to first decision device.

Also include reporting device, the input for reporting device is connected with window determinant, the output end for reporting device It is connected with time-delay calculation device.

Advantage of the present utility model and good effect are：

1st, the utility model first marks initial bottom noise cancellation signal by bottom filter of making an uproar, then excludes and there may be targeting signal The interference in region, so as to carry out more accurate processing to the correlated series of accidental access signal.

2nd, effective determination of the utility model by leading trigger to the scope of targeting signal that may be present, can More accurately collect the power of targeting signal that may be present.

3rd, the utility model is made an uproar filter and leading trigger by window determinant combination bottom, can more accurately be sentenced The presence of disconnected targeting signal, so that the false alarm rate and false alarm rate of smallcell receivers are lower, it is easier to reach agreement It is defined to require.

Brief description of the drawings

Fig. 1 is a kind of embodiment circuit block diagram of the present utility model；

Fig. 2 is another embodiment circuit block diagram of the present utility model.

Embodiment

The utility model embodiment is further described below in conjunction with accompanying drawing：

A kind of the first embodiment of small base station receiver including analog-digital converter 10, bottom as shown in figure 1, make an uproar filtering Device 20 and leading trigger 30.The input of the analog-digital converter 10 connects the input signal of small base station, for will be small The input analog signal of base station is converted to data signal；The bottom is made an uproar input and the analog-digital converter of filter 20 10 output end is connected, and the influence for the bottom of data signal to be made an uproar removes and judges whether to meet the first judgment condition；Institute The make an uproar output end of filter 20 of the input and the bottom for stating leading trigger 30 is connected, for that will meet the first judgment condition Signal carry out second and judge to obtain the judgement on targeting signal.

Bottom filter 20 of making an uproar is made an uproar the decision device 22 of threshold calculator 21 and first bottom of including, and the bottom is made an uproar threshold calculator 21 input is connected with the output end of the analog-digital converter 10, for the mean power of sequential correlated series to be added Upper preset value, obtains initial bottom and makes an uproar threshold value；The input of first decision device 22 and the bottom are made an uproar the defeated of threshold calculator 21 Go out end connection, when currently judging to exist in window the sampled point for threshold value of being made an uproar more than the initial bottom for detecting, judge described It is current to judge that window meets the first judgment condition.The utility model first marks initial bottom noise cancellation signal, then exclude there may be it is leading The interference in the region of signal, so as to threshold calculations of being made an uproar to the more accurate bottom of the correlated series of accidental access signal progress.

The leading trigger 30 includes the decision device 32 of power meter 31 and second.The input of the power meter 31 with it is described The make an uproar output end of filter 20 of bottom is connected, for the judgement window to meeting first judgment condition, according to more than described Initial bottom is made an uproar the sampled point of threshold value, is determined the sample range of useful signal, is calculated the power of useful signal.Second decision device 32 input is connected with the output end of the power meter 31, for detect the power of the useful signal be not more than it is described pre- If available power threshold value when, judge it is described it is current judgement window there is targeting signal

Compared with prior art, the present embodiment can more accurately judge targeting signal, thus by two decision devices Effective determination to the scope of targeting signal that may be present, can more accurately collect the work(of targeting signal that may be present Rate.

A kind of another embodiment of small base station receiver, as shown in Fig. 2 being made an uproar filtering including analog-digital converter 10, bottom Device 20, leading trigger 30, time-delay calculation device 40, window determinant 50 and device 60 is reported, wherein analog-digital converter 10, bottom Make an uproar filter 20, leading trigger 30 is sequentially connected and connect (identical with first embodiment).The input of the time-delay calculation device 40 It is connected with the output end of the second decision device 32 of leading trigger 30, for there is targeting signal in the judgement current judgement window Afterwards, the current Stochastic accessing numbering and time delay for judging window is recorded.The decision device 22 of window determinant 50 and first, Second decision device 32, time-delay calculation device 40 are connected, for being not present in the judgement current judgement window after targeting signal, Or after the current Stochastic accessing numbering for judging window and time delay is recorded, detection currently judges whether window is current Last under root sequence judges window, and exports result of determination to first decision device 22 and report device 60；Meanwhile, institute State the first decision device 22, be additionally operable to when it is described it is current to judge window be not that last under current root sequence judges window when, Made an uproar threshold value according to the initial bottom, detect it is next judge to whether there is in window exceed the bottom and make an uproar the sampled point of threshold value.Institute State and report device 60 to be connected respectively with window determinant 50, time-delay calculation device 40, report device 60 to receive the judgement of window determinant As a result, for when it is described it is current to judge window be that last under current root sequence judges window when, to time-delay calculation device 40 Be recorded Stochastic accessing is reported to number and time delay.

The present embodiment is made an uproar threshold value and useful signal threshold value by window determinant with reference to initial bottom, is more accurately judged The presence of targeting signal, so that the false alarm rate and false alarm rate of small receivers are lower, it is easier to reach as defined in agreement It is required that.

Make an uproar threshold calculations at make an uproar filter 20, leading trigger 30, bottom of analog-digital converter 10 in the utility model, bottom Device 21, the first decision device 22, power meter 31, the second decision device 32, time-delay calculation device 40, window determinant 50 and report device 60 etc. It is known hardware circuit or hardware module and can be bought from market, is in place of the utility model protection and creation above-mentioned The annexation of hardware circuit and hardware module, and non-software is innovated.

It is emphasized that embodiment described in the utility model is illustrative, rather than it is limited, therefore this reality It is every new according to this practicality by those skilled in the art with the new embodiment including being not limited to described in embodiment The other embodiment that the technical scheme of type is drawn, also belongs to the scope of the utility model protection.

Claims

1. a kind of small base station receiver, it is characterised in that：Made an uproar filter and leading trigger including analog-digital converter, bottom； The input connection input signal of the analog-digital converter, make an uproar input and the simulation numeral of filter of the bottom turns The output end of parallel operation is connected, and the make an uproar output end of filter of input and the bottom of the leading trigger is connected, described The output end connection signal output part of leading trigger.

2. a kind of small base station receiver according to claim 1, it is characterised in that：Bottom filter of making an uproar is made an uproar threshold the bottom of including It is worth calculator and the first decision device, the leading trigger includes power meter and the second decision device, the bottom is made an uproar threshold calculator Input be connected with the output end of the analog-digital converter, the input of first decision device and the bottom are made an uproar threshold It is worth the output end connection of calculator；The input of the power meter is connected with first decision device, second decision device Input be connected with the output end of the power meter, the output end of second decision device output decision signal.

3. a kind of small base station receiver according to claim 2, it is characterised in that：Also include time-delay calculation device, when described The input for prolonging calculator is connected with the output end of leading trigger, the output end connection signal output of the time-delay calculation device End.

4. a kind of small base station receiver according to claim 3, it is characterised in that：Also include window determinant, the window Determinant is connected with first decision device, the second decision device, time-delay calculation device respectively, and exports result of determination to described first Decision device.

5. a kind of small base station receiver according to claim 4, it is characterised in that：Also include reporting device, it is described to report device Input be connected with window determinant, the output end for reporting device is connected with time-delay calculation device.