CN100568767C - A kind of signal acceptance method of mobile communication terminal and device - Google Patents

Abstract

The invention discloses a kind of signal acceptance method of mobile communication terminal, this method comprises: A, the sub-district of selecting the signal received power to reach predetermined condition are the activation sub-district; B, estimate relative time delay, adjust the original position of the channel estimation window and the actual reception signal that respectively activate the sub-district; C, disassociation service signal utilize the described adjusted channel estimation window that respectively activates the sub-district that described service signal is carried out grand diversity united detection processing, and the signal after handling is received as effective service signal.The present invention also discloses a kind of signal receiving device of mobile communication terminal simultaneously.Adopt method and apparatus of the present invention, interference signal can be received as useful signal, improve the signal receiving performance of mobile communication terminal.

Description

A kind of signal acceptance method of mobile communication terminal and device

Technical field

The present invention relates to mobile communication technology, relate in particular to a kind of signal acceptance method and device of mobile communication terminal.

Background technology

Growth along with the mobile communication bandwidth mobile TV service occurred at moving communicating field, and this business can make mobile communication terminal, and for example mobile phone receives and play TV programme.Mobile TV service in the mobile communication system belongs to broadcasting multicast service, in existing communication system, broadcasting multicast service mainly sends identical information simultaneously by each cell base station and realizes, for example in the wireless communication system that uses sign indicating number to divide, a plurality of base stations use identical physical resources such as carrier frequency, time slot and code channel to send information.

Mobile communication system is when carrying out broadcasting multicast service, and each cell base station can only use omnidirectional antenna to send signal in order to reach the effect of broadcasting.The signal that mobile communication terminal receives is the mixed signal from a plurality of cell base stations, comprises the signal of affiliated subdistrict (being this sub-district) signal of base station and neighbor cell base station.Under situation with work frequently, interference between each sub-district is very big, and because mobile communication terminal has nothing in common with each other to the distance of each cell base station, the time that arrives mobile communication terminal from the signal of each cell base station is also different, therefore mobile communication terminal only receives the affiliated subdistrict signal of base station usually as useful signal at present, and the broadcast group broadcast signal that other cell base stations send will filter out as interference signal.

In order to offset the interference of adjacent base station, the big spreading gain of available technology adopting carries out spread spectrum to the affiliated subdistrict base station signal, but transmission rate that like this will certainly the limit service signal.Because service transmission rate and spreading gain are inversely proportional to, so if guarantee that service transmission rate is higher, can only make spreading gain try one's best little even make spreading gain is 1, like this just can't offset the interference of adjacent base station, and in fact broadcasting multicast service can't be used.

As seen from the above analysis, prior art since mobile communication terminal only with the affiliated subdistrict signal as effective signal, neighbor cell signal is all handled as interference signal, so poor performance of mobile communication terminal received signal, service data transmission rate is low, has limited the application of broadcasting multicast service.

Summary of the invention

In view of this, main purpose of the present invention is to provide a kind of signal acceptance method of mobile communication terminal, to improve the signal receiving performance of mobile communication terminal.

Another object of the present invention is to provide a kind of signal receiving device of mobile communication terminal, to improve the signal receiving performance of mobile communication terminal.

In order to realize the foregoing invention purpose, main technical schemes of the present invention is:

A kind of signal acceptance method of mobile communication terminal, this method comprises:

A, according to the signal received power of current mobile communication terminal to each sub-district, select the signal received power to reach the sub-district of predetermined condition for activating the sub-district;

B, estimate actual reception signal location and the relative time delay of specifying the received signal position, adjust the original position of the channel estimation window and the actual reception signal that respectively activate the sub-district according to the relative time delay that estimates;

C, from the original position disassociation service signal of actual reception signal, utilize the described adjusted channel estimation window that respectively activates the sub-district that described service signal is carried out grand diversity united detection processing, with the signal after handling as effectively service signal reception.

Preferably, described method is all carried out at the time slot that each is used to receive service signal.

Preferably, described steps A specifically comprises:

A1, mobile communication terminal is made as 0 to the initial value of the signal received power of affiliated subdistrict and all neighbor cells;

A2, at first time slot, N-1 sub-district elected affiliated subdistrict as simultaneously and activated the sub-district as activating the sub-district before selecting from neighbor cell list, the natural number of N for being scheduled to;

A3, described each of calculating activate the signal received power of sub-district in current time slots;

A4, the signal received power value that calculates with steps A 3 are replaced each and are activated the original signal received power value in sub-district;

A5, at next time slot, the activation sub-district of signal received power minimum is set to un-activation in the last time slot, determine that in current all activated sub-district order comes last activation sub-district, in neighbor cell list, select the described next non-activation sub-district that comes last activation sub-district to be made as in order and activate the sub-district, when described when to come last activation sub-district be last sub-district in the neighbor cell list, then begin to select a non-activation sub-district to be made as and activate the sub-district from the origin cell of neighbor cell list;

A6, return steps A 3.

Calculating each activation sub-district among the above-mentioned steps A3 at the concrete grammar of the signal received power of current time slots is:

A31, many yards collection channel estimating are done in described activation sub-district, obtain the original estimation result of this activation sub-district;

A32, described original estimation result is carried out noise reduction process;

A33, determine that network side is high-rise and be the specified channel estimation window in described activation sub-district, the channel estimation results after the described noise reduction process is decomposed, from decomposition result, obtain the channel impulse response value in the described allocated channel estimating window;

A34, calculate the instantaneous signal received power of described activation sub-district according to each channel impulse response value in the described allocated channel estimating window;

A35, described instantaneous signal received power is carried out smoothing processing, the stable state estimated value that obtains is the signal received power of described activation sub-district in current time slots.

Described time slot is for receiving the used time slot of service signal, and described signal received power is the received signal code power of the DPCH of bearer service signal;

Perhaps, described time slot is the downlink broadcast time slot, and described signal received power is the received signal code power of Primary Common Control Physical Channel.

Preferably, described steps A specifically comprises:

A1, affiliated subdistrict and all neighbor cells to mobile communication terminal in the used time slot of service signal are done many yards collection channel estimating, obtain the original estimation result of each sub-district;

A2, the original estimation result of described each sub-district is carried out noise reduction process;

A3, determine that network side is high-rise and be the specified channel estimation window in each sub-district, the channel estimation results after the described noise reduction process is decomposed, from decomposition result, obtain the channel impulse response value in the allocated channel estimating window of described each sub-district;

A4, calculate the channel estimation window power of described each sub-district, determine wherein maximum channel estimation window power, be equal to channel estimation window power and represent described signal received power according to the channel impulse response value in the allocated channel estimating window of described each sub-district;

The ratio of the channel estimation window power of a5, the channel estimation window power that calculates each sub-district and described maximum;

A6, described ratio and default window are activated threshold value compare, when described certain ratio activates threshold value greater than described window, then this ratio corresponding district is elected as and activated the sub-district.

After step a6, this method also can further comprise:

Add up described activation sub-district sum, compare with the higher limit of presetting activating the sub-district sum, when activating the sub-district sum above described higher limit, then the channel estimation window power to all activated sub-district sorts, activation sub-district with channel estimation window power minimum is labeled as the un-activation sub-district successively, and sum equals described higher limit up to the activation sub-district of remainder.

Preferably, the described appointment received signal of step B position is the affiliated subdistrict received signal position of precognition; Described estimation actual reception signal location comprises with the detailed process in the relative time delay of specifying the received signal position:

The window of B1, expansion affiliated subdistrict channel estimation window is long;

B2, calculate each tap in the channel estimation window of described all activated sub-district after expansion power and, computing formula is:

$h_{\mathrm{temp},i}=\underset{n=0}{\overset{N-1}{\mathrm{\Σ}}}{\left|h_{n,i}\right|}^2$

i＝k _m·W _FL-delta_WL_before，...，(k _m+1)·W _FL+delta_WL_after-1

Wherein, h _{Temp, i}For the channel estimating power in i tap in the channel estimation window of all activated sub-district after described expansion and; h _{N, i}Be n channel estimation results that activates in the channel estimation window of sub-district after described expansion in i the tap, N is activation sub-district sum; | h _{N, i}| for to h _{N, i}Delivery; k _mW _FLBe the original position of affiliated subdistrict channel estimation window of precognition, wherein k _mSequence number for the high-rise channel appointed estimating window of network side; W _FLFor the window of the channel estimation window of affiliated subdistrict long; Delta_WL_before is the number of chips that described affiliated subdistrict channel estimation window is expanded forward; Delta_WL_after is the number of chips that described affiliated subdistrict channel estimation window is expanded backward.

B3, from the original position of described expansion back channel estimation window, be that step-length is slided in whole window with a tap, calculate every W continuously successively _FLThe h of individual tap _{Temp, i}Sum W determines the continuous W of W maximum _FLThe original position j of individual tap is with the original position k of described affiliated subdistrict channel estimation window _mW _FLDifference k with j _mW _FL-j is as the relative time delay of described mobile communication terminal actual reception signal location with respect to the affiliated subdistrict received signal position of appointment.

Preferably, among the step B be according to adjusting the concrete grammar that respectively activates the cell channel estimating window described relative time delay:

To be described relative time delay cyclic shift unit, the described channel estimation window that respectively activates the sub-district is carried out cyclic shift; If described relative time delay is greater than 0, then with the described channel estimation window that respectively activates sub-district cyclic shift to the right, if described relative time delay is less than 0, then with the described channel estimation window that respectively activates sub-district cyclic shift left, if equal 0 described relative time delay, then the channel estimation window that activates the sub-district is not carried out cyclic shift.

Preferably, step B is described is specially according to the original position of adjusting the actual reception signal relative time delay:

If after greater than 0, then will specifying relative time delay the received signal position to adjust described relative time delay forward, as the original position of actual reception signal; If after less than 0, then will specifying relative time delay the received signal position to adjust described relative time delay backward, as the original position of actual reception signal; If equal 0 relative time delay, then the original position of this actual reception signal is described appointment received signal position.

Preferably, described step C specifically comprises:

C1, in the original position of described actual reception signal, from received signal stream, isolate business time-slot, and from business time-slot, obtain service signal;

C2, structure are adjusted the transmission matrix of the channel estimation window correspondence that respectively activates the sub-district behind the position, and each transmission matrix that activates the sub-district is carried out the diversity merging;

C3, the transmission matrix after utilizing diversity to merge carry out joint-detection to described service signal, with the signal after the joint-detection as effectively service signal reception.

Preferably, described service signal can be the multicast broadcast service signal.

The invention also discloses a kind of signal receiving device of mobile communication terminal, comprise reception antenna, also comprise sub-district activation detection module, time delay estimation module, time delay adjusting module and grand diversity joint-detection module; Wherein,

Detection module is activated in the sub-district, is used for according to the signal received power of reception antenna to each sub-district, selects the signal received power to reach the sub-district of predetermined condition for activating the sub-district;

The time delay estimation module is used for activating the selected activation of detection module sub-district according to the sub-district, estimates actual reception signal location and the relative time delay of specifying the received signal position;

The time delay adjusting module is used for adjusting according to described relative time delay the original position of the channel estimation window and the actual reception signal that respectively activate the sub-district;

Grand diversity joint-detection module, be used for original position disassociation service signal from described actual reception signal, utilize the described adjusted channel estimation window that respectively activates the sub-district that described service signal is carried out grand diversity united detection processing, the signal after handling is exported to the Service Processing Module of mobile communication terminal as effective service signal.

Preferably, described sub-district is activated detection module and is specifically comprised activation cell selecting module, power computation module and power setting unit, wherein,

Activate the cell selecting module, be used for that N-1 neighbor cell is set to activate the sub-district before first time slot affiliated subdistrict and neighbor cell list, N is default natural number, the activation sub-district of the signal received power minimum that the described power setting of time slot afterwards unit is set is set to un-activation, and next the non-activation sub-district in the neighbor cell list is set to activate the sub-district;

Power computation module is used at each time slot, calculates the signal received power in each set activation sub-district of current time slots;

The power setting unit, be used for reception antenna is made as 0 to the initial value of the signal received power of affiliated subdistrict and all neighbor cells, and replace each original signal received power value in activation sub-district with the signal received power value that described power computation module latest computed goes out.

Described power computation module specifically comprises:

Many yards collection channel estimation modules are used for many yards collection channel estimating are done in described activation sub-district;

Noise reduction module is used for the estimated result of described many yards collection channel estimation modules is carried out noise reduction process;

The channel impulse response computing module is used for determining that the network side high level is described activation sub-district channel appointed estimating window, and the result of described noise reduction module is decomposed, and obtains the channel impulse response value in the described allocated channel estimating window from decomposition result;

The instantaneous power computing module is used for calculating according to the channel impulse response value of described channel impulse response computing module output the instantaneous signal received power of described activation sub-district;

The smoothing processing module is used for described instantaneous signal received power is carried out smoothing processing, and the stable state estimated value that obtains is exported to described power setting unit.

Above-mentioned time slot is for receiving the used time slot of service signal, and described signal received power is the received signal code power of the DPCH of bearer service signal;

Perhaps, above-mentioned time slot is the downlink broadcast time slot, and described signal received power is the received signal code power of Primary Common Control Physical Channel.

Preferably, described sub-district activation detection module specifically comprises:

Many yards collection channel estimation modules are used for many yards collection channel estimating are done in the sub-district;

Noise reduction module is used for the estimated result of described many yards collection channel estimation modules is carried out noise reduction process;

The channel impulse response computing module, be used for determining that the network side high level is the specified channel estimation window in each sub-district, output result to described noise reduction module decomposes, and obtains the channel impulse response value in the allocated channel estimating window of described each sub-district from decomposition result;

The window power computation module is used for calculating according to the channel impulse response value of the allocated channel estimating window of described each sub-district the channel estimation window power of described each sub-district, and determines wherein maximum channel estimation window power;

The ratio calculation module is used to calculate the ratio of the channel estimation window power of the channel estimation window power of each sub-district and described maximum;

Relatively select module, be used for the ratio of described ratio calculation module output is compared with the window activation threshold value of presetting, when described certain ratio activates threshold value greater than described window, then this ratio corresponding district is elected as and activated the sub-district.

Described sub-district is activated detection module and is also further comprised statistical comparison module, order module and screening module; Wherein,

The statistical comparison module is used to add up described activation sub-district sum, compares with the higher limit of presetting activating the sub-district sum, when activation sub-district sum surpasses described higher limit, then sends out triggering signal and gives order module;

Order module is used to receive that the channel estimation window power to all activated sub-district sorts after the triggering signal;

The screening module is used for the ranking results according to described order module, and the activation sub-district of channel estimation window power minimum is set to the un-activation sub-district successively, and sum equals described higher limit up to the activation sub-district of remainder.

Preferably, the affiliated subdistrict received signal position of described appointment received signal position for predicting; Described time delay estimation module specifically comprises:

The long expansion module of window, the window that is used to expand the affiliated subdistrict channel estimation window is long;

Power and computing module, be used to calculate each tap in the channel estimation window of described all activated sub-district after expansion power and;

Relative time delay, determination module was used for from the original position of described expansion back channel estimation window, was that step-length is slided in whole window with a tap, calculated every W continuously successively _FLThe h of individual tap _{Temp, i}Sum W determines the continuous W of W maximum _FLThe original position j of individual tap, with the difference of the original position of affiliated subdistrict channel estimation window and j as the relative time delay of described mobile communication terminal actual reception signal location with respect to the affiliated subdistrict received signal position of appointment; Described W _FLFor the window of the channel estimation window of affiliated subdistrict long, h _{Temp, i}For the channel estimating power in i tap in the channel estimation window of all activated sub-district after described expansion and.

Preferably, described grand diversity joint-detection module specifically comprises:

The service signal acquisition module is used for the original position at described actual reception signal, isolates business time-slot from received signal stream, and obtain service signal from business time-slot;

The transmission matrix processing module is used to construct the transmission matrix of adjusting the channel estimation window correspondence that respectively activates the sub-district behind the position, and transmission matrix that each activates the sub-district is carried out diversity merges;

The joint-detection module, the transmission matrix that is used to utilize described transmission matrix processing module output carries out joint-detection to the service signal of described service signal acquisition module output, the signal after the joint-detection is defeated by the Service Processing Module of mobile communication terminal as effective service signal.

Among the present invention, since mobile communication terminal be not only with the affiliated subdistrict signal as useful signal, but selective reception power reaches the sub-district of predetermined condition from all sub-districts, be generally the stronger sub-district of received power, as activating the sub-district, these channel estimating and actual reception signal locations that activate the sub-district are carried out the time delay adjustment, to eliminate the delay inequality that each cell signal arrives mobile communication terminal, and service signal is carried out grand diversity joint-detection also handle to eliminate interference, thereby the signal of all activated sub-district all can be received as useful signal, make the interference signal of neighbor cell become useful signal, increase the intensity of received signal, improved the performance of mobile communication terminal received signal.Simultaneously, it is anti-interference that the present invention needn't use big spreading gain, thereby improve service data transmission rate, promotes the application of broadcasting multicast service.

Description of drawings

Fig. 1 is the main flow chart of signal acceptance method of the present invention;

Fig. 2 is the structure chart of signal receiving device of the present invention;

Fig. 3 activates first kind of composition structure chart of detection module for the sub-district;

Fig. 4 activates second kind of composition structure chart of detection module for the sub-district;

Fig. 5 is the composition structure chart of time delay estimation module;

Fig. 6 is the composition structure chart of grand diversity joint-detection module.

Embodiment

Below by specific embodiments and the drawings the present invention is described in further details.

Core concept of the present invention is: mobile communication terminal is with a received signal with last sub-district, comprise current affiliated subdistrict signal of mobile communication terminal and neighbor cell signal, merge processing, described merging is handled and is called grand diversity joint-detection in the present invention, with the signal after merging as effective service signal.In this area, also the current affiliated subdistrict of described mobile communication terminal can be called this sub-district.

The signal that mobile communication terminal received is the signal that affiliated subdistrict signal and all neighbor cell signals mix, therefore need and selectively choose the stronger sub-district of signal and carry out grand diversity joint-detection, the present invention selects to activate the sub-district according to mobile communication terminal to the power of the signal received power of sub-district, described activation sub-district is: in the processing of this time slot, finally be used for grand diversity joint-detection to obtain the sub-district of effective traffic signal.

The method of the invention is applicable to the signal of receiving multicast and broadcast service, and following examples mobile phone TV services are that the present invention will be described for example.

Fig. 1 is the main flow chart of the method for the invention.Referring to Fig. 1, this flow process comprises:

Step 11, detection is activated in the sub-district.That is: analyze the signal received power of this mobile communication terminal, select the signal received power to reach the sub-district of predetermined condition for activating the sub-district to each sub-district.

Step 12, estimate actual reception signal location and the relative time delay of specifying the received signal position, adjust the original position of the channel estimation window and the actual reception signal that respectively activate the sub-district according to this relative time delay.

Step 13, from the original position disassociation service signal of actual reception signal, utilize the described adjusted channel estimation window that respectively activates the sub-district that described service signal is carried out grand diversity united detection processing, with the signal after handling as effectively service signal reception.

Above-mentioned steps 11 to step 13 is all carried out at the time slot that each is used to receive the mobile phone TV services signal.

Those skilled in the art will know that, when the mobile communication terminal received signal, mobile communication terminal also needs by measuring or sign (Cell ID) list information of the higher layer message acquisition neighbor cell base station of eating dishes without rice or wine and the information such as physical code channel that mobile TV service uses, use for mobile communication terminal, these repeat no more for existing known technology herein.

The sub-district of described step 11 is activated to detect can three kinds of specific implementation methods, wherein:

The sub-district is activated the first kind of implementation method that detects and is comprised:

Step 201, mobile communication terminal are made as 0 with received signal code power (RSCP) initial value of DPCH that is used to carry the mobile phone TV services signal of all sub-districts.In this implementation method with the RSCP representative mobile communication terminal of the DPCH of carrying mobile phone TV services signal signal received power to the sub-district.

Step 202, receive first time slot of mobile TV service signal at mobile communication terminal, N-1 sub-district is masked as the activation sub-district with affiliated subdistrict before choosing by the sub-district numeric order from described neighbor cell list.The value of N preestablishes according to the hardware of mobile communication terminal serving disposal ability.Origin cell sequence number in the described neighbor cell list is 1.

Step 203, calculate the RSCP of described activation sub-district in current time slots.

Step 204, activate sub-district with each and upgrade the corresponding original RSCP value in sub-district that activates at the RSCP of current time slots; Be not flagged as the sub-district of activation at last time slot, its RSCP of current time slots keeps original value constant.

Step 205, receiving the next time slot of mobile TV service data, a sub-district of RSCP minimum in the last time slot is labeled as un-activation, all the other sub-districts still are labeled as activation, determine in current all activated sub-district that simultaneously order comes last activation sub-district, in neighbor cell list, select the described next non-activation sub-district that comes last activation sub-district to be made as in order and activate the sub-district, when described when to come last activation sub-district be last sub-district in the neighbor cell list, then begin to select a non-activation sub-district to be made as and activate the sub-district from the origin cell of neighbor cell list; Return step 203 then.For example, choose N sub-district as activating the sub-district, choose N+1 sub-district as the activation sub-district at the 3rd time slot at second time slot, and the like.

The described computing activation of step 203 sub-district in the detailed process of the RSCP of current time slots referring to following steps 2031 to step 2035.Activate the sub-district for each, all need carry out following steps 2031 to 2035 to obtain the RSCP of this activation sub-district in current time slots.

Step 2031, from current time slots, isolate in the middle of pilot code (midamble) signal, according to this midamble signal many yards collection channel estimating are done in all activated sub-district, respectively activated the original estimation result of sub-district Hn ", should Hn "Be vector, n=0 wherein ..., N-1, wherein N is affiliated subdistrict during n=0 for activating the quantity of sub-district, n=1 ..., N-1 is a neighbor cell.Described many yards collection channel estimation methods can adopt that Chinese patent application number is 03100670.1, denomination of invention is the disclosed method of patent document of " many yards collection of time slot CDMA system channel estimation methods ".

Step 2032, each is activated the sub-district original estimation result Hn "Carry out noise reduction process.Noise reduction process is calculated by following formula (1):

${\underset{\‾}{{\stackrel{\·\·}{h}}^{\′\′}}}_i=\left\{\begin{array}{cc}{\underset{\‾}{h^{\′\′}}}_i;& {\left|{\underset{\‾}{h^{\′\′}}}_i\right|}^2\≥{\mathrm{\Γ}}_{\mathrm{CHE}}^2\\ 0;& \mathrm{else}\end{array}\right.,i=0,...,P-1---\left(1\right)$

Wherein,

Be the channel estimation results of activation sub-district in i tap after the noise reduction process, H " _iBe the channel estimation results of activation sub-district in i tap, | H " _i| for right H " _iDelivery, Γ _CHE ²Be threshold value, P=128.The effect of noise reduction process is less than thresholding Γ power _CHE ²Tap zero setting.Thresholding Γ _CHE ²Calculate by following formula (2):

${\mathrm{\Γ}}_{\mathrm{CHE}}^2={\mathrm{\ϵ}}_{\mathrm{CHE}}^2{\stackrel{\‾}{\mathrm{\σ}}}_n^2{g}_{\mathrm{AGC}}^2/P---\left(2\right)$

Wherein, ε _CHE ²Be the signal-noise ratio threshold of presetting, σ _n ²Be the average noise power of measuring by the mobile communication terminal measurement module of recurrence, g _AGCIt is automatic gain control (AGC, Automatic GainControl) weighted factor.

Each of activation sub-district (i=0 ..., the P-1) vector of Zu Chenging

For this activates the sub-district through the channel estimating after the noise reduction process.

Step 2033, determine the high-rise specified channel estimation window of network side, the channel estimation results after the described noise reduction process is decomposed, from decomposition result, obtain the channel impulse response value in the described allocated channel estimating window.

Concrete, will according to following formula (3)

Resolve into mobile communication terminal for activating the channel impulse response of the specified channel estimation window in sub-district H '

${\underset{\‾}{h^{\′}}}_i^{\left(k_m\right)}=\left\{\begin{array}{ccc}{\underset{\‾}{{\stackrel{\·\·}{h}}^{\′\′}}}_i^{\left(k_m\right)}& \mathrm{if}& i\≤W-1,\\ 0& \mathrm{if}& i>W-1,\end{array}\right.k_m=0,...,K_m-1,i=0,...,W_{\mathrm{FL}}-1---\left(3\right)$

Described H 'For

(k _m=0 ..., K _m-1) vector of being formed; K _mDistribute to the number of the channel estimation window that activates the sub-district for the network side high level, be predetermined value, described k _mFor the network side high level in advance for activating the label of sub-district channel appointed estimating window, the network side high level by broadcast message with K _mAnd k _mPass to mobile communication terminal;

Be k _mThe channel impulse response value of i tap in the individual channel estimation window; Be k _mIndividual channel estimation window correspondence Described

Described W _FL=16.

Step 2034, activate the sub-district separately according to described N H ', calculate the instantaneous received signal code power (RSCP) that respectively activates the sub-district by following formula (4).

${\mathrm{\σ}}^2={\mathrm{\σ}}_{\mathrm{AGC}}^2/g_{\mathrm{AGC}}^2---\left(4\right)$

Wherein, σ ²Be instantaneous RSCP; g _AGCBe the AGC weighted factor, be used to adjust the amplitude of received signal.σ _AGC ²Calculate according to following formula (5).

${\mathrm{\σ}}_{\mathrm{AGC}}^2={\left|\right|{\underset{\‾}{h}}^{\′\left(k_m\right)}\left|\right|}^2=\underset{i=0}{\overset{W_{\mathrm{FL}}-1}{\mathrm{\Σ}}}{\left|{\underset{\‾}{h}}_i^{\′\left(k_m\right)}\right|}^2---\left(5\right)$

Wherein,

Expression activates the k that use the sub-district _mThe channel impulse response of individual channel estimation window is a vector; The expression compute vector

Norm.

Step 2035, to σ ²Carry out smoothing processing, the stable state estimated value that obtains is as activating the RSCP of sub-district in current time slots, specifically from the smoothing processing computational methods referring to following formula (6):

σ ²(k)＝(1-p)*σ ²(k-1)+p*σ ²(k)；σ ²(0)＝σ ²(0) (6)

Wherein, σ ²(k) be the stable state estimated value of the RSCP of k time slot, k is current timeslot number, since 0 value; P express time smoothing factor, 0≤p≤1.

Described step 2034 and step 2035 can be carried out by the measurement subsystem of existing mobile communication terminal.

Activate in the second kind of implementation method that detects in the sub-district, mobile communication terminal all calculates all sub-districts in the neighbor cell list and the RSCP of affiliated subdistrict at each used time slot of mobile phone TV services, therefrom selects the bigger sub-district of RSCP to be the activation sub-district in this time slot.

The sub-district is activated the second kind of implementation method that detects and is specifically comprised:

Step 301, mobile communication terminal are done many yards collection channel estimating to all neighbor cells in affiliated subdistrict and the neighbor cell list in the used time slot of mobile phone TV services signal, obtain the original estimation result of each sub-district.

Step 302: the original estimation result to each sub-district is carried out noise reduction process.The concrete processing method of this step 302 is identical with step 2032, repeats no more herein.

Step 303, determine that network side is high-rise and be the specified channel estimation window in each sub-district, the channel estimation results after the described noise reduction process is decomposed, from decomposition result, obtain the channel impulse response value in the high-rise specified channel estimation window of described network side.The concrete processing method of this step 303 is identical with step 2033, repeats no more herein.

Step 304, calculate the employed channel estimation window power in all sub-districts according to following formula (7):

$p_{h,n}^{\left(k_m\right)}=\underset{i=0}{\overset{W_{\mathrm{FL}}-1}{\mathrm{\Σ}}}{\left|{\underset{\‾}{h^{\′}}}_{n,i}^{\left(k_m\right)}\right|}^2,n=0,...,N_0---\left(7\right)$

Wherein, k _mBe used channel estimation window sequence number; N ₀Be the neighbor cell sum, neighbor cell is since 1 sequence number, and n=0 is the sequence number of affiliated subdistrict.

Represent n the employed channel estimation window power in sub-district, use in this implementation method

The RSCP that represents n sub-district;

The channel impulse response value of representing n i tap in the employed channel estimation window in sub-district.

Step 305, from described

The middle maximal window performance number of selecting

Promptly $p_{h,n_{\max }}^{\left(k_m\right)}=\max \left\{p_{h,n}^{\left(k_m\right)}\right\}$ n＝0，...，N ₀。Calculate the ratio of used channel estimation window power in each sub-district and maximal window power according to following formula (8):

$r_n^{\left(k_m\right)}=\frac{p_{h,n}^{\left(k_m\right)}}{p_{h,n_{\max }}^{\left(k_m\right)}}---\left(8\right)$

Step 306, begin to n=N from n=0 ₀, judge successively

Whether activate thresholding α greater than default window, if greater than, then the n corresponding district is labeled as and activates the sub-district, otherwise be labeled as the un-activation sub-district.This step 306 can be handled according to following formula (9):

${\underset{\‾}{{\stackrel{\·}{h}}^{\′}}}_n^{\left(k_m\right)}=\left\{\begin{array}{cc}{\underset{\‾}{h^{\′}}}_n^{\left(k_m\right)}& r_n^{\left(k_m\right)}>\mathrm{\α}\\ 0& r_n^{\left(k_m\right)}\≤\mathrm{\α}\end{array}\right.---\left(9\right)$

The activation sub-district sum of step 307, the above-mentioned institute of statistics mark, judge whether activate the sub-district sum has surpassed default activation sub-district sum higher limit Cell_Num_limit, if surpass, then the channel estimation window power to all activated sub-district sorts, sub-district with channel estimation window power minimum is labeled as the un-activation sub-district successively, and sum equals Cell_Num_limit up to the activation sub-district of remainder; If do not surpass, then finish this is activated the selection course of sub-district.

If the hardware handles ability of mobile communication terminal is enough supported the detection method of this activation sub-district, restriction activates having little significance of sub-district sum so, and then this step 307 can be omitted.

It is basic identical that the first kind of implementation method that detects activated in the third implementation method that the sub-district activation detects and described sub-district, difference only is: the used time slot of described first kind of implementation method is the used time slot of reception mobile phone TV services signal, and the signal received power of being analyzed is the RSCP of the DPCH of carrying mobile phone TV services signal; And the used time slot of the third implementation method is downlink broadcast time slot (TS0), and the signal received power of being analyzed is the RSCP of the Primary Common Control Physical Channel (P-CCPCH, Primary Common Control Physical Channel) of sub-district.In this third implementation method, mobile communication terminal carries out the sub-district at the downlink broadcast time slot by the RSCP that measures each sub-district P-CCPCH by turns and activates detection, do not do the sub-district at the used time slot of mobile phone TV services and activate detection, but directly use the sub-district active information of TS0 in the same frame.

The described appointment received signal of step 12 position is the affiliated subdistrict received signal position of precognition; The detailed process of described step 12 may further comprise the steps 401 to step 405:

Step 401, obtain affiliated subdistrict receive channel position, i.e. the channel estimating window position of affiliated subdistrict, the channel estimating window position of affiliated subdistrict is that the network side high level is preassigned; In the front and back of the channel estimating window position of affiliated subdistrict to the long W of the window of affiliated subdistrict channel estimation window _FLExpand, before the original position of affiliated subdistrict channel estimation window He after the end position, respectively get delta_WL_before and delta_WL_after chip (chip) respectively, will expand the long WL_expand=W of being of window _FL+ delta_WL_before+delta_WL_after.

Described delta_WL_before and delta_WL_after can preestablish according to the figure place of channel.Suppose that all activated sub-district all uses identical channel estimation window, its sequence number is k _m(k _m=0 ..., K _m-1), so the expansion after the channel estimating window position be:

{k _m·W _FL-delta_WL_before，...，(k _m+1)·W _FL+delta_WL_after-1}

If k _mW _FL-delta_WL_before＜0, perhaps (k _m+ 1) W _FL+ delta_WL_after＞P then tackles the P delivery, and being equivalent to P is the cycle to carry out cyclic shift.

Step 402, according to formula (10) calculate power that all activated cell channel estimated result is positioned at each tap of channel estimation window after the expansion with.

$h_{\mathrm{temp},i}=\underset{n=0}{\overset{N-1}{\mathrm{\Σ}}}{\left|h_{n,i}\right|}^2$

i＝k _m·W _FL-delta_WL_before，...，(k _m+1)·W _FL+delta_WL_after-1

(10)

Wherein, h _{Temp, i}For the channel estimating power in i tap in the channel estimation window of all activated sub-district after described expansion and; h _{N, i}Be n channel estimation results that activates in the channel estimation window of sub-district after described expansion in i the tap; k _mW _FLBe the original position of affiliated subdistrict channel estimation window of precognition, wherein k _mSequence number for the high-rise channel appointed estimating window of network side; W _FLFor the window of the channel estimation window of affiliated subdistrict long; Delta_WL_before is the number of chips that described affiliated subdistrict channel estimation window is expanded forward; Delta_WL_after is the number of chips that described affiliated subdistrict channel estimation window is expanded backward.

For ease of understanding, suppose the above-mentioned identical channel estimation window of sub-district use that respectively activates.In fact, the present invention also is applicable to fully and respectively activates the situation that the different channels estimating window is used in the sub-district.

Step 403, from expanding the original position of back channel estimation window, be that step-length is slided in whole window with a tap, calculate every W continuously successively _FLThe h of individual tap _{Temp, i}Sum W.Determine the continuous W of W maximum _FLThe original position j of individual tap is with the original position k of described affiliated subdistrict channel estimation window _mW _FLDifference k with j _mW _FL-j is as the relative time delay of described mobile communication terminal actual reception signal location with respect to the affiliated subdistrict received signal position of appointment.

Step 404, with above-mentioned time delay k _mW _FL-j is a cyclic shift unit, adjusts the described channel estimation window that respectively activates the sub-district by cyclic shift.If k _mW _FL-j＞0, the channel estimation window that then will activate the sub-district is cyclic shift k to the right _mW _FLIf-j chip is k _mW _FL-j＜0, the channel estimation window that then will activate the sub-district is cyclic shift j-k left _mW _FLIf individual chip is k _mW _FL-j=0 does not then carry out cyclic shift to the channel estimation window that activates the sub-district.

Step 405, utilize described estimation time delay to determine the original position of the used time slot of mobile TV service, i.e. the original position of actual reception signal.Be specially: if k _mW _FL-j＞0, then the original position of this time slot should be the preceding k of affiliated subdistrict channel estimation window original position of precognition _mW _FL-j chip; If k _mW _FL-j＜0, then the original position of this time slot should be j-k after the affiliated subdistrict channel estimation window original position of precognition _mW _FLIndividual chip; If k _mW _FL-j=0, then the original position of this time slot is the affiliated subdistrict channel estimation window original position of precognition.

Do not have strict ordinal relation between above-mentioned steps 404 and the step 405, can carry out simultaneously yet.

Described step 13 specifically can may further comprise the steps 501 to step 503:

Step 501, in the original position of described actual reception signal, from received signal stream, isolate the mobile TV service time slot, obtain the service signal of the mobile TV service in this time slot.

Step 502, structure are adjusted the transmission matrix of the channel estimation window correspondence that respectively activates the sub-district behind the position, and each transmission matrix that activates the sub-district is carried out the diversity merging.

Step 503: to the service signal that obtains in the above-mentioned steps 501, utilize the transmission matrix that obtains in the above-mentioned steps 502 to carry out joint-detection, the purpose of joint-detection is the interference signal in the received signal is converted to effective signal, and the signal after the joint-detection is received as effective service signal.

Above-mentioned concrete diversity merges and associated detecting method can number be with reference to Chinese patent application: 200510088606.6, and denomination of invention repeats no more for the patent application document of " associated detecting method that is used for shared frequency broadcasting/multicasting " herein.

For realizing said method, the invention provides a kind of mobile communication terminal signal receiving device, referring to shown in Figure 2, this signal receiving device comprises reception antenna 21, sub-district activation detection module 22, time delay estimation module 23, time delay adjusting module 24 and grand diversity joint-detection module 25.Wherein:

The signal received power that detection module 22 is used to analyze 21 pairs of each sub-districts of reception antenna is activated in the sub-district, selects the signal received power to reach the sub-district of predetermined condition for activating the sub-district.

Time delay estimation module 23 is used for activating detection module 22 selected activation sub-districts according to the sub-district, estimates actual reception signal location and the relative time delay of specifying the received signal position.

Time delay adjusting module 24 is used for adjusting according to described relative time delay the original position of the channel estimation window and the actual reception signal that respectively activate the sub-district.

Grand diversity joint-detection module 25 is used for the original position disassociation service signal from described actual reception signal, utilize the described adjusted channel estimation window that respectively activates the sub-district that described service signal is carried out grand diversity united detection processing, the signal after handling is defeated by the Service Processing Module 26 of mobile communication terminal as effective service signal.

The form mode of detection module 22 by two kinds of enforcements activated in the sub-district of signal receiving device of the present invention.

Fig. 3 activates first kind of composition structure chart of detection module 22 for the sub-district.Referring to Fig. 3, to form in the structure at first kind, the sub-district is activated detection module 22 and is specifically comprised activation cell selecting module 31, power computation module 32 and power setting unit 33, wherein:

Described activation cell selecting module 31 is used for being set to activate the sub-district at first a time slot affiliated subdistrict and a predetermined quantity neighbor cell, the activation sub-district of the signal received power minimum that the described power setting of time slot afterwards unit 33 is set is set to un-activation, and determine that in current all activated sub-district order comes last activation sub-district, in neighbor cell list, select the described next non-activation sub-district that comes last activation sub-district to be made as in order and activate the sub-district; When described when to come last activation sub-district be last sub-district in the neighbor cell list, then begin to select a non-activation sub-district to be made as and activate the sub-district and be set to activate the sub-district by the next neighbor cell the circular order neighbor cell from the origin cell of neighbor cell list.

Described power computation module 32 is used at each time slot, calculates the signal received power in each set activation sub-district of current time slots.

Described power computation module 32 specifically comprises:

Many yards collection channel estimation modules 321 are used for many yards collection channel estimating are done in described activation sub-district.Described many yards collection channel estimation methods can adopt that Chinese patent application number is 03100670.1, denomination of invention is the disclosed method of patent document of " many yards collection of time slot CDMA system channel estimation methods ".

Noise reduction module 322 is used for the estimated result of described many yards collection channel estimation modules 321 is carried out noise reduction process.Concrete denoise processing method can adopt the method for above-mentioned steps 2032.

Channel impulse response computing module 323, be used for determining that the network side high level is described activation sub-district channel appointed estimating window, result to described noise reduction module 322 is decomposed, and obtains the channel impulse response value in the described allocated channel estimating window from decomposition result.This channel impulse response computing module 323 specifically can adopt the method for above-mentioned steps 2033 to handle by formula (3).

Instantaneous power computing module 324 is used for calculating according to the channel impulse response value of described channel impulse response computing module 323 outputs the instantaneous signal received power of described activation sub-district.Concrete computational methods can adopt above-mentioned steps 2034 described methods.

Smoothing processing module 325 is used for described instantaneous signal received power is carried out smoothing processing, and the stable state estimated value that obtains is exported to described power setting unit 33.Concrete smoothing processing method can adopt above-mentioned steps 2035 described methods.

Described power setting unit 33 is used for the initial value of the signal received power of 21 pairs of affiliated subdistricts of reception antenna and all neighbor cells is made as 0, and replaces each with the signal received power value that described power computation module 32 latest computed go out and activate the original signal received power value in sub-district.

Activate first kind of detection module 22 in above-mentioned sub-district and form in the structure, described time slot is for receiving the used time slot of service signal, and described signal received power is the RSCP of the DPCH of bearer service signal; Perhaps, described time slot is the downlink broadcast time slot, and described signal received power is the RSCP of P-CCPCH channel.

Fig. 4 activates second kind of composition structure chart of detection module 22 for the sub-district.Referring to Fig. 3, to form in the structure at second kind, the sub-district is activated detection module 22 and is specifically comprised:

Many yards collection channel estimation modules 41 are used for many yards collection channel estimating are done in the sub-district.Many yards collection channel estimation modules 41 are to all sub-districts, comprise all neighbor cells in affiliated subdistrict and the neighbor cell list, do many yards collection channel estimating.

Noise reduction module 42 is used for the estimated result of described many yards collection channel estimation modules 41 is carried out noise reduction process.Concrete denoise processing method can adopt the method for above-mentioned steps 2032.

Channel impulse response computing module 43, be used for determining that the network side high level is the specified channel estimation window in each sub-district, output result to described noise reduction module 42 decomposes, and obtains the channel impulse response value in the allocated channel estimating window of described each sub-district from decomposition result.The concrete processing method of channel impulse response computing module 43 is identical with the method for described step 2033.

Window power computation module 44 is used for calculating according to the channel impulse response value of the allocated channel estimating window of described each sub-district the channel estimation window power of described each sub-district, and determines wherein maximum channel estimation window power;

Ratio calculation module 45 is used to calculate the ratio of the channel estimation window power of the channel estimation window power of each sub-district and described maximum.Concrete computational methods can adopt the method for described step 304.

Relatively select module 46, be used for the ratio of described ratio calculation module 45 outputs is compared with the window activation threshold value of presetting, when described certain ratio activates threshold value greater than described window, then this ratio corresponding district is elected as and activated the sub-district.

Activate in second kind of composition mode of detection module 22 in described sub-district, can further include statistical comparison module 47, order module 48 and screening module 49; Wherein:

Statistical comparison module 47 is used for adding up described activation sub-district sum according to the described selection result of module 46 of relatively selecting, compare with the higher limit of presetting activating the sub-district sum, when activating the sub-district sum, then send out triggering signal and give order module 48 above described higher limit;

Order module 48 is used to receive that the channel estimation window power to all activated sub-district sorts after the triggering signal;

Screening module 49 is used for the ranking results according to described order module 48, and the activation sub-district of channel estimation window power minimum is set to the un-activation sub-district successively, and sum equals described higher limit up to the activation sub-district of remainder.

Fig. 5 is the composition structure chart of time delay estimation module 23.Referring to Fig. 5, described time delay estimation module 23 specifically comprises:

The long expansion module 51 of window, the window that is used to expand the affiliated subdistrict channel estimation window is long.Concrete extended method can adopt the method for described step 401.

Power and computing module 52, be used to calculate each tap in the channel estimation window of described all activated sub-district after expansion power and; Specifically can adopt the described method of step 402 to calculate by formula (10).

Relative time delay, determination module 53, is used for from the original position of described expansion back channel estimation window, and be that step-length is slided in whole window with a tap, calculate every W continuously successively _FLThe h of individual tap _{Temp, i}Sum W determines the continuous W of W maximum _FLThe original position j of individual tap, as the relative time delay of described mobile communication terminal actual reception signal location with respect to the affiliated subdistrict received signal position of appointment, described appointment received signal position is the affiliated subdistrict received signal position of precognition with the difference of the original position of described affiliated subdistrict channel estimation window and j; Described W _FLFor the window of the channel estimation window of affiliated subdistrict long, h _{Temp, i}For the channel estimating power in i tap in the channel estimation window of all activated sub-district after described expansion and.

Time delay adjusting module 24 is given in determination module 53 output in relative time delay determined relative time delay, and time delay adjusting module 24 respectively activates the channel estimation window of sub-district and the original position of actual reception signal is adjusted according to step 404 and the described method of step 405 to described.

Fig. 6 is the composition structure chart of grand diversity joint-detection module 25.Referring to Fig. 6, described grand diversity joint-detection module 25 specifically comprises:

Service signal acquisition module 61, be used to receive original position from the adjusted actual reception signal of time delay adjusting module 24, and, from received signal stream, isolate business time-slot, and from business time-slot, obtain service signal in the original position of this actual reception signal;

Transmission matrix processing module 62, be used to receive the adjusted original position that respectively activates the channel estimation window of sub-district from time delay adjusting module 24, structure is adjusted the transmission matrix of the channel estimation window correspondence that respectively activates the sub-district behind the position, and each transmission matrix that activates the sub-district is carried out the diversity merging;

Joint-detection module 63, the transmission matrix that is used to utilize described transmission matrix processing module 62 outputs carries out joint-detection to the service signal of described service signal acquisition module 61 outputs, the signal after the joint-detection is defeated by the Service Processing Module 26 of mobile communication terminal as effective service signal.

The concrete diversity that grand diversity joint-detection module 25 is adopted merges and associated detecting method can number be with reference to Chinese patent application: 200510088606.6, and denomination of invention is the patent application document of " associated detecting method that is used for shared frequency broadcasting/multicasting ".

The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with the people of this technology in the disclosed technical scope of the present invention; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.

Claims (18)

1, a kind of signal acceptance method of mobile communication terminal is characterized in that, this method comprises:

A, according to the signal received power of current mobile communication terminal to each sub-district, select the signal received power to reach the sub-district of predetermined condition for activating the sub-district;

B, estimate actual reception signal location and the relative time delay of specifying the received signal position, adjust the original position of the channel estimation window and the actual reception signal that respectively activate the sub-district according to the relative time delay that estimates;

C, from the original position disassociation service signal of actual reception signal, utilize the described adjusted channel estimation window that respectively activates the sub-district that described service signal is carried out grand diversity united detection processing, with the signal after handling as effectively service signal reception;

Described step C specifically comprises:

C1, in the original position of described actual reception signal, from received signal stream, isolate business time-slot, and from business time-slot, obtain service signal;

C2, structure are adjusted the transmission matrix of the channel estimation window correspondence that respectively activates the sub-district behind the position, and each transmission matrix that activates the sub-district is carried out the diversity merging;

C3, the transmission matrix after utilizing diversity to merge carry out joint-detection to described service signal, with the signal after the joint-detection as effectively service signal reception.

2, method according to claim 1 is characterized in that, this method is all carried out at the time slot that each is used to receive service signal.

3, method according to claim 1 is characterized in that, described steps A specifically comprises:

A1, mobile communication terminal is made as 0 to the initial value of the signal received power of affiliated subdistrict and all neighbor cells;

A2, at first time slot, N-1 sub-district elected affiliated subdistrict as simultaneously and activated the sub-district as activating the sub-district before selecting from neighbor cell list, the natural number of N for being scheduled to;

A3, described each of calculating activate the signal received power of sub-district in current time slots;

A4, the signal received power value that calculates with steps A 3 are replaced each and are activated the original signal received power value in sub-district;

A5, at next time slot, the activation sub-district of signal received power minimum is set to un-activation in the last time slot, determine that in current all activated sub-district order comes last activation sub-district, in neighbor cell list, select the described next non-activation sub-district that comes last activation sub-district to be made as in order and activate the sub-district, when described when to come last activation sub-district be last sub-district in the neighbor cell list, then begin to select a non-activation sub-district to be made as and activate the sub-district from the origin cell of neighbor cell list;

A6, return steps A 3.

4, method according to claim 3 is characterized in that, calculates each activation sub-district in the steps A 3 at the concrete grammar of the signal received power of current time slots to be:

A31, many yards collection channel estimating are done in described activation sub-district, obtain the original estimation result of this activation sub-district;

A32, described original estimation result is carried out noise reduction process;

A33, determine that network side is high-rise and be the specified channel estimation window in described activation sub-district, the channel estimation results after the described noise reduction process is decomposed, from decomposition result, obtain the channel impulse response value in the described allocated channel estimating window;

A34, calculate the instantaneous signal received power of described activation sub-district according to each channel impulse response value in the described allocated channel estimating window;

A35, described instantaneous signal received power is carried out smoothing processing, the stable state estimated value that obtains is the signal received power of described activation sub-district in current time slots.

According to claim 3 or 4 described methods, it is characterized in that 5, described time slot is for receiving the used time slot of service signal, described signal received power is the received signal code power of the DPCH of bearer service signal;

Perhaps, described time slot is the downlink broadcast time slot, and described signal received power is the received signal code power of Primary Common Control Physical Channel.

6, method according to claim 1 is characterized in that, described steps A specifically comprises:

A1, affiliated subdistrict and all neighbor cells to mobile communication terminal in the used time slot of service signal are done many yards collection channel estimating, obtain the original estimation result of each sub-district;

A2, the original estimation result of described each sub-district is carried out noise reduction process;

A3, determine that network side is high-rise and be the specified channel estimation window in each sub-district, the channel estimation results after the described noise reduction process is decomposed, from decomposition result, obtain the channel impulse response value in the allocated channel estimating window of described each sub-district;

A4, calculate the channel estimation window power of described each sub-district, determine wherein maximum channel estimation window power, be equal to channel estimation window power and represent described signal received power according to the channel impulse response value in the allocated channel estimating window of described each sub-district;

The ratio of the channel estimation window power of a5, the channel estimation window power that calculates each sub-district and described maximum;

A6, described ratio and default window are activated threshold value compare, when described certain ratio activates threshold value greater than described window, then this ratio corresponding district is elected as and activated the sub-district.

7, method according to claim 6 is characterized in that, after step a6, this method further comprises:

Add up described activation sub-district sum, compare with the higher limit of presetting activating the sub-district sum, when activating the sub-district sum above described higher limit, then the channel estimation window power to all activated sub-district sorts, activation sub-district with channel estimation window power minimum is labeled as the un-activation sub-district successively, and sum equals described higher limit up to the activation sub-district of remainder.

8, method according to claim 1 is characterized in that, the described appointment received signal of step B position is the affiliated subdistrict received signal position of precognition; Described estimation actual reception signal location comprises with the detailed process in the relative time delay of specifying the received signal position:

The window of B1, expansion affiliated subdistrict channel estimation window is long;

B2, calculate each tap in the channel estimation window of described all activated sub-district after expansion power and, computing formula is:

$h_{\mathrm{temp},i}=\underset{n=0}{\overset{N-1}{\mathrm{\Σ}}}{\left|h_{n,i}\right|}^2$

i＝k _m·W _FL-delta_WL_before，...，(k _m+1)·W _FL+delta_WL_after-1

Wherein, h _{Temp, i}For the channel estimating power in i tap in the channel estimation window of all activated sub-district after described expansion and; h _{N, i}Be n channel estimation results that activates in the channel estimation window of sub-district after described expansion in i the tap, N is activation sub-district sum; | h _{N, i}| for to h _{N, i}Delivery; k _mW _FLBe the original position of affiliated subdistrict channel estimation window of precognition, wherein k _mSequence number for the high-rise channel appointed estimating window of network side; W _FLFor the window of the channel estimation window of affiliated subdistrict long; Delta_WL_before is the number of chips that described affiliated subdistrict channel estimation window is expanded forward; Delta_WL_after is the number of chips that described affiliated subdistrict channel estimation window is expanded backward.

B3, from the original position of described expansion back channel estimation window, be that step-length is slided in whole window with a tap, calculate every W continuously successively _FLThe h of individual tap _{Temp, i}Sum W determines the continuous W of W maximum _FLThe original position j of individual tap is with the original position k of described affiliated subdistrict channel estimation window _mW _FLDifference k with j _mW _FL-j is as the relative time delay of described mobile communication terminal actual reception signal location with respect to the affiliated subdistrict received signal position of appointment.

9, method according to claim 1 is characterized in that, among the step B according to adjusting the concrete grammar that respectively activates the cell channel estimating window described relative time delay is:

To be described relative time delay cyclic shift unit, the described channel estimation window that respectively activates the sub-district is carried out cyclic shift; If described relative time delay is greater than 0, then with the described channel estimation window that respectively activates sub-district cyclic shift to the right, if described relative time delay is less than 0, then with the described channel estimation window that respectively activates sub-district cyclic shift left, if equal 0 described relative time delay, then the channel estimation window that activates the sub-district is not carried out cyclic shift.

10, method according to claim 1 is characterized in that, step B is described to be specially according to the original position of adjusting the actual reception signal relative time delay:

If after greater than 0, then will specifying relative time delay the received signal position to adjust described relative time delay forward, as the original position of actual reception signal; If after less than 0, then will specifying relative time delay the received signal position to adjust described relative time delay backward, as the original position of actual reception signal; If equal 0 relative time delay, then the original position of this actual reception signal is described appointment received signal position.

According to each described method in the claim 1 to 4,6 to 10, it is characterized in that 11, described service signal is the multicast broadcast service signal.

12, a kind of signal receiving device of mobile communication terminal comprises reception antenna, it is characterized in that, this device also comprises sub-district activation detection module, time delay estimation module, time delay adjusting module and grand diversity joint-detection module; Wherein,

Detection module is activated in the sub-district, is used for according to the signal received power of reception antenna to each sub-district, selects the signal received power to reach the sub-district of predetermined condition for activating the sub-district;

The time delay estimation module is used for activating the selected activation of detection module sub-district according to the sub-district, estimates actual reception signal location and the relative time delay of specifying the received signal position;

The time delay adjusting module is used for adjusting according to described relative time delay the original position of the channel estimation window and the actual reception signal that respectively activate the sub-district;

Grand diversity joint-detection module, be used for original position disassociation service signal from described actual reception signal, utilize the described adjusted channel estimation window that respectively activates the sub-district that described service signal is carried out grand diversity united detection processing, the signal after handling is exported to the Service Processing Module of mobile communication terminal as effective service signal;

Described grand diversity joint-detection module specifically comprises:

The service signal acquisition module is used for the original position at described actual reception signal, isolates business time-slot from received signal stream, and obtain service signal from business time-slot;

The transmission matrix processing module is used to construct the transmission matrix of adjusting the channel estimation window correspondence that respectively activates the sub-district behind the position, and transmission matrix that each activates the sub-district is carried out diversity merges;

The joint-detection module, the transmission matrix that is used to utilize described transmission matrix processing module output carries out joint-detection to the service signal of described service signal acquisition module output, the signal after the joint-detection is defeated by the Service Processing Module of mobile communication terminal as effective service signal.

13, signal receiving device according to claim 12 is characterized in that, described sub-district is activated detection module and specifically comprised activation cell selecting module, power computation module and power setting unit, wherein,

Activate the cell selecting module, be used for that N-1 neighbor cell is set to activate the sub-district before first time slot affiliated subdistrict and neighbor cell list, N is default natural number, the activation sub-district of the signal received power minimum that the described power setting of time slot afterwards unit is set is set to un-activation, and next the non-activation sub-district in the neighbor cell list is set to activate the sub-district;

Power computation module is used at each time slot, calculates the signal received power in each set activation sub-district of current time slots;

The power setting unit, be used for reception antenna is made as 0 to the initial value of the signal received power of affiliated subdistrict and all neighbor cells, and replace each original signal received power value in activation sub-district with the signal received power value that described power computation module latest computed goes out.

14, signal receiving device according to claim 13 is characterized in that, described power computation module specifically comprises:

Many yards collection channel estimation modules are used for many yards collection channel estimating are done in described activation sub-district;

Noise reduction module is used for the estimated result of described many yards collection channel estimation modules is carried out noise reduction process;

The channel impulse response computing module is used for determining that the network side high level is described activation sub-district channel appointed estimating window, and the result of described noise reduction module is decomposed, and obtains the channel impulse response value in the described allocated channel estimating window from decomposition result;

The instantaneous power computing module is used for calculating according to the channel impulse response value of described channel impulse response computing module output the instantaneous signal received power of described activation sub-district;

The smoothing processing module is used for described instantaneous signal received power is carried out smoothing processing, and the stable state estimated value that obtains is exported to described power setting unit.

According to claim 13 or 14 described signal receiving devices, it is characterized in that 15, described time slot is for receiving the used time slot of service signal, described signal received power is the received signal code power of the DPCH of bearer service signal;

Perhaps, described time slot is the downlink broadcast time slot, and described signal received power is the received signal code power of Primary Common Control Physical Channel.

16, signal receiving device according to claim 12 is characterized in that, described sub-district is activated detection module and specifically comprised:

Many yards collection channel estimation modules are used for many yards collection channel estimating are done in the sub-district;

Noise reduction module is used for the estimated result of described many yards collection channel estimation modules is carried out noise reduction process;

The channel impulse response computing module, be used for determining that the network side high level is the specified channel estimation window in each sub-district, output result to described noise reduction module decomposes, and obtains the channel impulse response value in the allocated channel estimating window of described each sub-district from decomposition result;

The window power computation module is used for calculating according to the channel impulse response value of the allocated channel estimating window of described each sub-district the channel estimation window power of described each sub-district, and determines wherein maximum channel estimation window power;

The ratio calculation module is used to calculate the ratio of the channel estimation window power of the channel estimation window power of each sub-district and described maximum;

Relatively select module, be used for the ratio of described ratio calculation module output is compared with the window activation threshold value of presetting, when described certain ratio activates threshold value greater than described window, then this ratio corresponding district is elected as and activated the sub-district.

17, signal receiving device according to claim 16 is characterized in that, described sub-district is activated detection module and further comprised statistical comparison module, order module and screening module; Wherein,

The statistical comparison module is used to add up described activation sub-district sum, compares with the higher limit of presetting activating the sub-district sum, when activation sub-district sum surpasses described higher limit, then sends out triggering signal and gives order module;

Order module is used to receive that the channel estimation window power to all activated sub-district sorts after the triggering signal;

The screening module is used for the ranking results according to described order module, and the activation sub-district of channel estimation window power minimum is set to the un-activation sub-district successively, and sum equals described higher limit up to the activation sub-district of remainder.

18, signal receiving device according to claim 12 is characterized in that, described appointment received signal position is the affiliated subdistrict received signal position of precognition; Described time delay estimation module specifically comprises:

The long expansion module of window, the window that is used to expand the affiliated subdistrict channel estimation window is long;

Power and computing module, be used to calculate each tap in the channel estimation window of described all activated sub-district after expansion power and;

Relative time delay, determination module was used for from the original position of described expansion back channel estimation window, was that step-length is slided in whole window with a tap, calculated every W continuously successively _FLThe h of individual tap _{Temp, i}Sum W determines the continuous W of W maximum _FLThe original position j of individual tap, with the difference of the original position of affiliated subdistrict channel estimation window and j as the relative time delay of described mobile communication terminal actual reception signal location with respect to the affiliated subdistrict received signal position of appointment; Described W _FLFor the window of the channel estimation window of affiliated subdistrict long, h _{Temp, i}For the channel estimating power in i tap in the channel estimation window of all activated sub-district after described expansion and.

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