CN201312304Y - Self-adapting adjacent base station interference eliminating device - Google Patents

Abstract

The utility model discloses a self-adapting adjacent base station interference eliminating device which comprises a receiving module, a mobile terminal area determining module and a data processing module, wherein the receiving module is used for receiving physical data blocks and leading mark or frequency guide mark sequences from a target base station and an adjacent base station through at least two receiving antennae; the mobile terminal area determining module is used for obtaining received signal intensity values of the target base station and the adjacent base station according to the leading mark or frequency guide mark sequences, setting a threshold value used for distinguishing the coverage areas of the target base station and comparing the received signal intensity values of the target base station and the adjacent base station with the threshold value so as to determine the coverage areas of the target base station of the mobile terminal; and the data processing module is used for processing the received physical data blocks by adopting the combination of interference elimination of the adjacent base station and maximum ratio combination according to the coverage areas of the target base station of the mobile terminal. The self-adapting adjacent base station interference eliminating device furthest improves the data throughput of the central coverage areas of the base stations while improving the communication characteristics on the edge of the coverage areas of the base stations.

Description

A kind of self adaptation is eliminated the interference of adjacent base station device

Technical field

The utility model relates generally to wireless communication field, relates in particular to a kind of self adaptation and eliminates the interference of adjacent base station device.

Background technology

In cellular cordless communication network, probably there is 20% mobile subscriber to be in the footprint edges zone of base station switching (Handoff).In this zone, make a big impact from the interference of adjacent base station communication quality, sometimes even cause the mobile subscriber can't proper communication to the mobile subscriber.At present, at micro-wave access global inter communication (WiMAX, Worldwide Interoperability for Microwave Access) in the technology control channel is taked 1/3/3 channeling, an i.e. base station capping unit (Cell), three sectors, the method of three frequency ranges, its purpose are exactly the interference for fear of footprint edges.But this method is a cost to sacrifice throughput.Particularly when mobile subscriber number increases, the decline highly significant of data throughout.In addition, in the WiMAX technology, data channel is not yet proposed any comparatively effective measures improve the communication performance in footprint edges zone.

The utility model content

In view of this, the purpose of this utility model is to provide a kind of self adaptation to eliminate the interference of adjacent base station device, when reaching the communication characteristic that improves the base station overlay area edge, improves the purpose of the data throughout of the base station center area of coverage to greatest extent.

According to the one side of the utility model embodiment, provide a kind of self adaptation to eliminate the interference of adjacent base station device, comprising:

Receiver module is used for by physical data block, leading symbol or the sequence of pilot symbols of at least two reception antennas receptions from target BS and adjacent base station;

The mobile terminal area determination module, be used for obtaining the received signal intensity level of target BS and adjacent base station according to leading symbol or sequence of pilot symbols, the threshold value of setting area partial objectives for base station coverage area compares to determine target BS overlay area, portable terminal place with the received signal intensity level and the threshold value of target BS and adjacent base station;

Data processing module is used for according to target BS overlay area, portable terminal place, adopts the combination that interference of adjacent base station is eliminated and high specific is synthetic that the physical data block that receives is handled.

According to the feature of the utility model embodiment, the received signal intensity level of described target BS and adjacent base station comprises the ratio of the received signal intensity of target BS and adjacent base station.

According to another feature of the utility model embodiment, described target BS overlay area comprises:

Target BS covers the central area, exists the target BS of single interference of adjacent base station to cover fringe region and exist the target BS of at least two interference of adjacent base station to cover fringe region.

According to another feature of the utility model embodiment, described mobile terminal area determination module comprises:

Signal strength signal intensity is calculated module, is used for obtaining according to leading symbol or sequence of pilot symbols the received signal intensity level of target BS and adjacent base station;

The threshold setting module, the threshold value of setting area partial objectives for base station coverage area;

Judge module relatively is used for the target BS overlay area, place that received signal intensity level and threshold value with target BS and adjacent base station compare to determine portable terminal.

According to another feature of the utility model embodiment, described data processing module comprises:

Data inverse is arranged module, and the physical data block that is used for that every reception antenna is received is carried out contrary the arrangement, obtains the logic data block after contrary the arrangement;

Channel estimation module is used for according to leading symbol or frequency pilot sign, estimates the physical channel from target BS and adjacent base station;

Channel reverse is arranged module, is used for that the physical channel of estimating is carried out contrary the arrangement and handles, and obtains the logic channel of the estimation after contrary the arrangement;

The data deinterlacing module is used for that the logic data block after contrary the arrangement is carried out deinterleaving and handles, and obtains the logic data block after the deinterleaving;

The channel de-interleaving block is used for logic channel to the estimation after contrary the arrangement and carries out deinterleaving and handle, and obtains the logic channel of the estimation after the deinterleaving;

The channel matrix constructing module is used for the number of repetition according to the logic channel and the logic data block of the estimation after the deinterleaving, the logic channel matrix that structure is estimated;

The weight coefficient module is used for obtaining first weight coefficient according to logic channel matrix and known noise variance matrix;

Balance module is used for carrying out equilibrium treatment according to the logic data block of first weight coefficient after to deinterleaving, the logic data block after the interference of adjacent base station that obtained the elimination that receives on the every antenna;

Recovery module has been used for to the elimination that receives on the every antenna data block after the interference of adjacent base station and has carried out that high specific is synthetic to be handled, and has obtained compressing the data block of noise.

According to another feature of the utility model embodiment, described data processing module comprises:

Channel estimation module is used for the leading symbol or the frequency pilot sign that receive according to every reception antenna, estimates the physical channel from target BS and adjacent base station;

The channel matrix constructing module is used for the physical channel according to every reception antenna estimation, the physical channel matrix that structure is estimated;

The weight coefficient module is used for obtaining second weight coefficient according to physical channel matrix of estimating and known noise variance matrix;

Balance module is used for according to second weight coefficient physical data block that receives being carried out equilibrium treatment, the physical data block of the estimation of the interference of adjacent base station that has been eliminated;

Data inverse is arranged module, is used to offset carry out contrary the arrangement except the physical data block of the estimation of interference of adjacent base station and handle, and obtains the logic data block after contrary the arrangement;

Data deinterlacing is handled, and is used for that the logic data block after contrary the arrangement is carried out deinterleaving and handles, and obtains understanding the logic data block after the interleaving treatment;

Recovery module, the logic data block after being used for according to the number of repetition of data block deinterleaving being handled carry out that high specific is synthetic to be handled, and have obtained the data block of compression noise.

According to another feature of the utility model embodiment, described data processing module comprises:

Channel estimation module is used for the leading symbol or the frequency pilot sign that receive according to every reception antenna, the physical channel that obtains estimating;

Channel reverse is arranged module, is used for that the physical channel of estimating is carried out contrary the arrangement and handles, and obtains the logic channel of the estimation after contrary the arrangement;

The channel de-interleaving block is used for logic channel to the estimation after contrary the arrangement for carrying out the deinterleaving processing, obtains the logic channel of the estimation after the deinterleaving;

Data inverse is arranged module, and the physical data block that is used for that every portable terminal reception antenna is received is carried out contrary the arrangement and handled, and obtains the logic data block after contrary the arrangement;

The data deinterlacing module is used for that the logic data block after contrary the arrangement is carried out deinterleaving and handles, and obtains the logic data block after the deinterleaving;

Balanced recovery module is used for logic channel according to the estimation after the deinterleaving logic data block after to deinterleaving and carries out equilibrium reduction processing, has obtained compressing the data block of noise.

According to the utility model embodiment on the other hand, provide a kind of self adaptation to eliminate the receiver of interference of adjacent base station, having comprised:

Receiver module is used for by physical data block, leading symbol or the sequence of pilot symbols of at least two reception antennas receptions from target BS and adjacent base station;

The mobile terminal area determination module, be used for obtaining the received signal intensity level of target BS and adjacent base station according to leading symbol or sequence of pilot symbols, the threshold value of setting area partial objectives for base station coverage area compares to determine target BS overlay area, portable terminal place with the received signal intensity level and the threshold value of target BS and adjacent base station;

Data processing module is used for according to target BS overlay area, portable terminal place, adopts the combination that interference of adjacent base station is eliminated and high specific is synthetic that the physical data block that receives is handled.

According to the feature of the utility model embodiment, described mobile terminal area determination module comprises:

Signal strength signal intensity is calculated module, is used for obtaining according to leading symbol or sequence of pilot symbols the received signal intensity level of target BS and adjacent base station;

The threshold setting module, the threshold value of setting area partial objectives for base station coverage area;

Judge module relatively is used for the target BS overlay area, place that received signal intensity level and threshold value with target BS and adjacent base station compare to determine portable terminal.

According to another feature of the utility model embodiment, described data processing module comprises:

Data inverse is arranged module, and the physical data block that is used for that every reception antenna is received is carried out contrary the arrangement, obtains the logic data block after contrary the arrangement;

Channel estimation module is used for according to leading symbol or frequency pilot sign, estimates the physical channel from target BS and adjacent base station;

Channel reverse is arranged module, is used for that the physical channel of estimating is carried out contrary the arrangement and handles, and obtains the logic channel of the estimation after contrary the arrangement;

The data deinterlacing module is used for that the logic data block after contrary the arrangement is carried out deinterleaving and handles, and obtains the logic data block after the deinterleaving;

The channel de-interleaving block is used for logic channel to the estimation after contrary the arrangement and carries out deinterleaving and handle, and obtains the logic channel of the estimation after the deinterleaving;

The channel matrix constructing module is used for the number of repetition according to the logic channel and the logic data block of the estimation after the deinterleaving, the logic channel matrix that structure is estimated;

The weight coefficient module is used for obtaining first weight coefficient according to logic channel matrix and known noise variance matrix;

Balance module is used for carrying out equilibrium treatment according to the logic data block of first weight coefficient after to deinterleaving, the logic data block after the interference of adjacent base station that obtained the elimination that receives on the every antenna;

Recovery module has been used for to the elimination that receives on the every antenna data block after the interference of adjacent base station and has carried out that high specific is synthetic to be handled, and has obtained compressing the data block of noise.

According to another feature of the utility model embodiment, described data processing module comprises:

Channel estimation module is used for the leading symbol or the frequency pilot sign that receive according to every reception antenna, estimates the physical channel from target BS and adjacent base station;

The channel matrix constructing module is used for the physical channel according to every reception antenna estimation, the physical channel matrix that structure is estimated;

The weight coefficient module is used for obtaining second weight coefficient according to physical channel matrix of estimating and known noise variance matrix;

Balance module is used for according to second weight coefficient physical data block that receives being carried out equilibrium treatment, the physical data block of the estimation of the interference of adjacent base station that has been eliminated;

Data inverse is arranged module, is used to offset carry out contrary the arrangement except the physical data block of the estimation of interference of adjacent base station and handle, and obtains the logic data block after contrary the arrangement;

Data deinterlacing is handled, and is used for that the logic data block after contrary the arrangement is carried out deinterleaving and handles, and obtains understanding the logic data block after the interleaving treatment;

Recovery module, the logic data block after being used for according to the number of repetition of data block deinterleaving being handled carry out that high specific is synthetic to be handled, and have obtained the data block of compression noise.

According to another feature of the utility model embodiment, described data processing module comprises:

Channel estimation module is used for the leading symbol or the frequency pilot sign that receive according to every reception antenna, the physical channel that obtains estimating;

Channel reverse is arranged module, is used for that the physical channel of estimating is carried out contrary the arrangement and handles, and obtains the logic channel of the estimation after contrary the arrangement;

The channel de-interleaving block is used for logic channel to the estimation after contrary the arrangement for carrying out the deinterleaving processing, obtains the logic channel of the estimation after the deinterleaving;

Data inverse is arranged module, and the physical data block that is used for that every portable terminal reception antenna is received is carried out contrary the arrangement and handled, and obtains the logic data block after contrary the arrangement;

The data deinterlacing module is used for that the logic data block after contrary the arrangement is carried out deinterleaving and handles, and obtains the logic data block after the deinterleaving;

Balanced recovery module is used for logic channel according to the estimation after the deinterleaving logic data block after to deinterleaving and carries out equilibrium reduction processing, has obtained compressing the data block of noise.

Self adaptation described in the utility model is eliminated the interference of adjacent base station device, determine the base station coverage area at portable terminal place according to the leading symbol that receives or frequency pilot sign, adopt the synthetic (MRC of high specific at different base station coverage area, Maximum Ratio Combining) technology and elimination interference of adjacent base station (CCIC, Co-Channel Interference Cancellation) interference of adjacent base station and compression noise are eliminated in the combination of technology, thereby can not only significantly improve the communication performance of footprint edges, and can guarantee the throughput of the base station center area of coverage, and the reliability of whole system and communication efficiency are improved.

Description of drawings

Fig. 1 is subjected to the schematic diagram of interference of adjacent base station for the cellular network center base station coverage area;

Fig. 2 is the structure diagram that self adaptation is eliminated interference of adjacent base station among the utility model embodiment;

Fig. 3 is the method flow diagram that self adaptation is eliminated interference of adjacent base station among the utility model embodiment;

Fig. 4 is the structure diagram that self adaptation is eliminated interference of adjacent base station among the utility model first embodiment;

Fig. 5 is the structure diagram that self adaptation is eliminated interference of adjacent base station among the utility model second embodiment;

Fig. 6 is the structure diagram that self adaptation is eliminated interference of adjacent base station among the utility model the 3rd embodiment;

Fig. 7 is the detailed block diagram that self adaptation is eliminated interference of adjacent base station among the utility model first embodiment;

Fig. 8 is the detailed block diagram that self adaptation is eliminated interference of adjacent base station among the utility model second embodiment;

Fig. 9 is the detailed block diagram that self adaptation is eliminated interference of adjacent base station among the utility model the 3rd embodiment.

Embodiment

Describe specific embodiment of the utility model in detail below in conjunction with accompanying drawing.

Fig. 1 among Fig. 1, comprises base station capping unit 1,2,3,4,5,6,7 for the cellular network center base station coverage area is subjected to the schematic diagram of interference of adjacent base station, and wherein, center base station capping unit 1 is adjacent with adjacent base station capping unit 2,3,4,5,6,7.Hexagonal area in the center base station capping unit 1 is defined as the base station and covers the central area, and the portable terminal that is in this zone and belongs to center base station capping unit 1 will be subjected to the weak jamming signal from adjacent base station 2,3,4,5,6,7; Delta-shaped region is defined as the footprint edges zone of center base station capping unit 1 and per 2 adjacent base station capping units, for example, the footprint edges zone of center base station capping unit 1 and adjacent base station capping unit 2,3, the portable terminal that is in this zone and belongs to center base station capping unit 1 will be subjected to the high reject signal from adjacent base station capping unit 2,3.The rectangular area is the footprint edges zone of center base station capping unit 1 and each adjacent base station capping unit, for example, the footprint edges zone of center base station capping unit 1 and adjacent base station capping unit 2, the portable terminal that is in this zone and belongs to center base station capping unit 1 is subjected to the high reject signal from adjacent base station capping unit 2.

According to the disturbed condition that the portable terminal that is positioned at above-mentioned three kinds of zones is subjected to, adopt following method to carry out interference eliminated.

For the hexagonal area that covers the central area as the base station, because very weak from the interference signal of adjacent base station capping unit in this zone, interference signal is mainly noise signal, therefore, adopts the MRC technology to come the compression noise signal, thereby eliminates interference signal;

For delta-shaped region, owing to the high reject signal that exists simultaneously in this zone from two adjacent base station capping units, therefore, employing CCIC eliminates the high reject signal from two adjacent base stations, adopts MRC to come compression noise simultaneously;

For the rectangular area, because this region memory at the high reject signal from single adjacent base station capping unit, therefore, adopts CCIC to eliminate from single this high reject signal that closes on, and adopts the MRC technology to come the compression noise signal.

For the handing-over zone of hexagonal area and delta-shaped region, rectangular area,, therefore, adopt the MRC technology to eliminate interference signal owing to adopt MRC and adopt the effect of CCIC basic identical.

Fig. 2 is the structure diagram that self adaptation is eliminated interference of adjacent base station among the utility model embodiment, among Fig. 2, comprise receiver module 201, mobile terminal area determination module 202, data processing module 203, wherein, mobile terminal area determination module 202 comprises signal strength signal intensity calculating module 2021, threshold setting module 2022 and compares judge module 2023; Data processing module 203 comprises CCIC module 2031 and MRC module 2032, wherein,

Receiver module 201 is used for by data block, leading symbol or the sequence of pilot symbols of reception antenna reception from target BS and adjacent base station;

Mobile terminal area determination module 202 is used for determining mobile terminal affiliated base station coverage area according to leading symbol from the base station (Preamble Symbol) or the frequency pilot sign (Pilot Symbol) received.Wherein,

Signal strength signal intensity is calculated module 2021, is used for obtaining the ratio of the received signal intensity of target BS and adjacent base station according to leading symbol or the sequence of pilot symbols from target BS and the adjacent base station that receive.

Threshold setting module 2022 is used for the threshold value (Threshold) of setting area partial objectives for base station coverage area.

Judge module 2023 relatively, the target BS overlay area, place that the received signal intensity level and the threshold value of target BS and adjacent base station compared to determine portable terminal.

Data processing module 203 is used for the region according to portable terminal, adopts the combination that interference of adjacent base station is eliminated and high specific is synthetic that data block from target BS is handled.Wherein,

CCIC module 2031 is used for the region according to portable terminal, handles carry out CCIC from the data block of target BS.

MRC module 2032 is used for the region according to portable terminal, handles carry out MRC from the data block of target BS.

Fig. 3 is the method flow diagram that self adaptation is eliminated interference of adjacent base station among the utility model embodiment, and concrete steps are as follows:

Step 301 is by physical data block, leading symbol or the sequence of pilot symbols of reception antenna reception from target BS and adjacent base station;

Step 302 according to leading symbol or sequence of pilot symbols, obtains the received signal intensity level of target BS and adjacent base station;

Step 303, the threshold value of setting area partial objectives for base station coverage area;

Step 304 compares to determine target BS overlay area, portable terminal place with the received signal intensity level and the threshold value of target BS and adjacent base station;

Step 305 according to target BS overlay area, portable terminal place, adopts the combination that interference of adjacent base station is eliminated and high specific is synthetic that the physical data block that receives is handled.

Below in conjunction with formula portable terminal is determined that according to leading symbol or frequency pilot sign the process of its region is described in detail:

Portable terminal is determined mobile terminal affiliated base station coverage area according to leading symbol or the frequency pilot sign from the base station that receive.

Base station coverage area comprises as the hexagonal area of covering central area, base station, as existing delta-shaped region, conduct from the high reject signal of two adjacent base station capping units to have the high reject signal rectangular area from single adjacent base station capping unit simultaneously.

Leading symbol or frequency pilot sign comprise the information of its affiliated base station of expression.Leading symbol or frequency pilot sign can be time domain homing sequence symbols, also can be frequency domain homing sequence symbols.With OFDM (OFDM, Orthogonal Frequency Division Multiplexing) when mode is carried out transfer of data, if adopt frequency domain homing sequence symbol, frequency domain aiming symbol sequence is according to preset frequency aiming symbol to be inserted between the OFDM symbol.The aiming symbol sequence of each base station can be different sequence.

Leading symbol or sequence of pilot symbols that formula (1) sends for target BS:

A _T＝[a _T1，a _T2，a _T3，…，a _TΩ](1)

In the formula (1), Ω is the length of leading symbol or sequence of pilot symbols.

Leading symbol or sequence of pilot symbols that formula (2) sends for adjacent base station:

A _Ii＝[a _Ii1，a _Ii2，a _Ii3，…，a _IiΩ](2)

In the formula (2), i represents the label of adjacent base station, and Ω is the length of leading symbol or sequence of pilot symbols.

Portable terminal receive from the leading symbol of target BS or sequence of pilot symbols as described in the formula (3):

S _T＝[S _T1，s _T2，s _T3，…，s _TΩ](3)

In the formula (3), Ω is the length of sequence of pilot symbols.

Portable terminal receive from the leading symbol of adjacent base station or sequence of pilot symbols as described in the formula (4):

S _Ii＝[S _Ii1，s _Ii2，s _Ii3，…，s _IiΩ](4)

In the formula (4), i represents the label of adjacent base station, and Ω is the length of leading symbol or sequence of pilot symbols.

Leading symbol or sequence of pilot symbols A to the target BS transmission _TLeading symbol or the sequence of pilot symbols S that receive with portable terminal from target BS _TCarry out correlation computations, obtain target BS received signal intensity C _T, as shown in Equation (5):

$C_T=\frac{1}{\mathrm{\Ω}}\underset{i=1}{\overset{\mathrm{\Ω}}{\mathrm{\Σ}}}{s}_{\mathrm{Ti}}{a}_{\mathrm{Ti}}---\left(5\right)$

Leading symbol or sequence of pilot symbols S to the adjacent base station transmission _IiWith portable terminal receive from the leading symbol of adjacent base station or lead spectrum symbol sebolic addressing S _IiCarry out correlation computations, obtain adjacent base station received signal intensity C _Ii, as shown in Equation (6):

$C_{\mathrm{Ii}}=\frac{1}{\mathrm{\Ω}}\underset{j=1}{\overset{\mathrm{\Ω}}{\mathrm{\Σ}}}{s}_{\mathrm{Iij}}{a}_{\mathrm{Iij}}---\left(6\right)$

Because the transmission channel between the reception antenna from the base station to the portable terminal will make the phase place of the signal that the base station sends change, for example, originally on the occasion of signal because the influence of transmission channel becomes the signal of negative value.Therefore, adopt following formula (7), (8) to replace formula formula (5), (6) to calculate target BS received signal intensity C _TWith adjacent base station received signal intensity C _Ii, avoid of the influence of transmission channel phase change to base station transmit signals, guarantee the calculating of received signal intensity accurately.

$C_T=\frac{1}{\mathrm{JP}}\underset{j=1}{\overset{J}{\mathrm{\Σ}}}\left|\underset{p=1}{\overset{P}{\mathrm{\Σ}}}{s}_{T(j+P(p-1)}{a}_{T(j+P(p-1)}\right|---\left(7\right)$

$C_{\mathrm{Ii}}=\frac{1}{\mathrm{JP}}\underset{j=1}{\overset{J}{\mathrm{\Σ}}}\left|\underset{p=1}{\overset{P}{\mathrm{\Σ}}}{s}_{\mathrm{Ii}(j+P(p-1)}{a}_{T(j+P(p-1)}\right|---\left(8\right)$

In formula (7), (8), J is an in-phase signal group number; P is the homophase time parameter, is illustrated in size for the direction of all signals in the time span of P is identical, promptly is all on the occasion of signal or is all the negative value signal.Homophase time parameter P because the speed that transmission channel changes is to estimate to determine according to the translational speed of portable terminal, therefore, determines the value of P by the speed decision that transmission channel changes according to the maximum translational speed of wireless communication system.Ω is the length of sequence of pilot symbols, and the product of J and P should be the positive integer more than or equal to Ω.

The target BS received signal intensity C that obtains according to formula (7), (8) _TWith adjacent base station received signal intensity C _Ii, calculate adjacent base station received signal intensity C _IiWith target BS received signal intensity C _TRatio

The threshold value (Threshold) of distinguishing the different base station overlay area is set is δ, by comparing

Determine the region of portable terminal with threshold delta.

According to the cellular communications networks structure, consider interference signal usually from two adjacent base station capping units, therefore, i=1 in following formula (9), (10), 2.I can certainly select different spans according to different communication network architecture, as i=1, and 2,3 or i=1,2,3 ..., n etc.

Formula (9) is positioned at the Rule of judgment that covers the hexagonal area of central area as the base station for determining portable terminal:

$\frac{C_{\mathrm{Ii}}}{C_T}\≤\mathrm{\δ}---\left(9\right)$

With i=1,2 substitution formula (9) obtain formula (10)

$\frac{C_{I1}}{C_T}\≤\mathrm{\δ},$ And $\frac{C_{I2}}{C_T}\≤\mathrm{\δ}---\left(10\right)$

Formula (10) the expression first adjacent base station received signal intensity C _I1With the second adjacent base station received signal intensity C _I2With target BS received signal intensity C _TRatio all be less than or equal to threshold delta, thereby determine that portable terminal is positioned at the hexagonal area that covers the central area as the base station.

Formula (11) is positioned at as the Rule of judgment that exists simultaneously from the delta-shaped region of the high reject signal of two adjacent base station capping units for determining portable terminal:

$\frac{C_{\mathrm{Ii}}}{C_T}>\mathrm{\δ}---\left(11\right)$

With i=1,2 substitution formula (11) obtain formula (12)

$\frac{C_{I1}}{C_T}>\mathrm{\δ},$ And $\frac{C_{I2}}{C_T}>\mathrm{\δ}---\left(12\right)$

Formula (12) the expression first adjacent base station received signal intensity C _I1With the second adjacent base station received signal intensity C _I2With target BS received signal intensity C _TRatio all greater than threshold delta, thereby determine that portable terminal is positioned at the delta-shaped region that exists simultaneously from the high reject signal of two adjacent base station capping units.

For other situation, shown in following formula (13), (14), determine that then portable terminal is positioned at as the rectangular area that exists from the high reject signal of single adjacent base station capping unit.

$\frac{C_{I1}}{C_T}>\mathrm{\δ},$ And $\frac{C_{I2}}{C_T}\≤\mathrm{\δ}---\left(13\right)$

$\frac{C_{I1}}{C_T}\≤\mathrm{\δ},$ And $\frac{C_{I2}}{C_T}>\mathrm{\δ}---\left(14\right)$

Fig. 4 is the structure diagram that self adaptation is eliminated interference of adjacent base station among the utility model first embodiment, this structure is primarily aimed at the portable terminal that is positioned at Fig. 1 intermediate cam shape zone, because there is the high reject signal from two adjacent base station capping units in this zone, therefore, the physical data block that portable terminal receives its every reception antenna adopts the CCIC method to handle respectively, the logic data block after the interference of adjacent base station has been eliminated, offset then except the logic data block after the interference of adjacent base station adopts the MRC method and handle jointly, obtain the data block of compression noise.Among Fig. 4, comprise first reception antenna 401, second reception antenna 402, a CCIC module 403, the 2nd CCIC module 404 and MRC module 405.Wherein,

The one CCIC module 403 is used for that first physical data block that first reception antenna 401 receives is carried out CCIC and handles first logic data block of the interference of adjacent base station that has been eliminated;

The 2nd CCIC module 404 is used for that second physical data block that second reception antenna 402 receives is carried out CCIC and handles second logic data block of the interference of adjacent base station that has been eliminated;

MRC module 405, first data block and second data block that are used to offset except interference of adjacent base station are carried out the MRC processing jointly, have obtained compressing the data block of noise.

Fig. 5 is the structure diagram that self adaptation is eliminated interference of adjacent base station among the utility model second embodiment, this structure is primarily aimed at the portable terminal that is arranged in Fig. 1 rectangular area, because there is the high reject signal from single adjacent base station capping unit in this zone, therefore, portable terminal utilizes the physical data block that its every reception antenna is received of many antennas to adopt the CCIC method to handle jointly, the logic data block of the interference of adjacent base station that has been eliminated, the logic data block that utilizes the logic data block that repeats to offset except interference of adjacent base station then adopts the MRC method to handle, and obtains the data block of compression noise.Among Fig. 5, comprise first reception antenna 501, second reception antenna 502, CCIC module 503 and MRC module 504.Wherein,

CCIC module 503, first physical data block and second physical data block that are used for first reception antenna 501, second reception antenna 502 are received are respectively carried out CCIC processing, first data block of the interference of adjacent base station that has been eliminated and second data block jointly;

MRC module 504, first physical data block and second physical data block that are used to offset except interference of adjacent base station are carried out the MRC processing jointly, have obtained compressing the data block of noise.

Fig. 6 is the structure diagram that self adaptation is eliminated interference of adjacent base station among the utility model the 3rd embodiment, this structure is primarily aimed at the portable terminal that is arranged in Fig. 1 hexagonal area, because the portable terminal in this zone is subjected to a little less than the interference relatively from adjacent base station, disturb and mainly show as the additivity white Gaussian noise, therefore, logic data block after the repetition that every reception antenna is received carries out MRC jointly and handles the logic data block of the noise that can be eliminated.Among Fig. 6, comprise first reception antenna 601, second reception antenna 602 and MRC module 603.Wherein,

MRC module 603 is used for logic data block after first repetition that first reception antenna 601, second reception antenna 602 are received respectively and the logic data block after second repetition are carried out the MRC processing jointly, has obtained compressing the data block of noise.

Below introduce in detail the device that carries out interference eliminated according to the residing different base station of portable terminal overlay area.

Fig. 7 is the detailed block diagram that self adaptation is eliminated interference of adjacent base station among the utility model first embodiment, among Fig. 7, comprising:

Receiver module 701 is used to receive the physical data block that many reception antennas receive

With leading symbol or frequency pilot sign;

Data inverse is arranged module 702, is used for the physical data block that every reception antenna is received

Carry out contrary arrange (De-Permutation), obtain the logic data block Z after contrary the arrangement _{DP_i} ^l

Data deinterlacing module 703 is used for the logic data block Z after contrary the arrangement _{DP_i} ^lCarry out deinterleaving, obtain the logic data block Z after the deinterleaving _i ^l

Channel estimation module 704 is used for the leading symbol or the frequency pilot sign that receive according to every reception antenna, the physical channel that obtains estimating

Channel reverse is arranged module 705, is used for the physical channel to estimating Carry out contrary arrange (De-Permutation), obtain the logic channel of the estimation after contrary the arrangement

Channel de-interleaving block 706 is used for the logic channel to the estimation after contrary the arrangement

Carry out deinterleaving, obtain the logic channel of the estimation after the deinterleaving

Channel matrix constructing module 707 is used for the number of repetition according to the logic channel and the logic data block of the estimation after the deinterleaving, the logic channel matrix that structure is estimated;

Calculate weight coefficient module 708, be used for obtaining weight coefficient W according to logic channel matrix of estimating and known noise variance matrix _LK

Balance module 709 is used for according to weight coefficient W _LKTo the logic data block Z after the deinterleaving _i ^lCarry out equilibrium treatment, the logic data block of interference of adjacent base station that obtained the elimination that receives on the every antenna

Recovery module 710 has been used for to the elimination that receives on the every antenna logic data block of interference of adjacent base station

Carry out MRC and handle, obtained compressing the data block S of noise _i ^k

Fig. 8 is the detailed block diagram that self adaptation is eliminated interference of adjacent base station among the utility model second embodiment, among Fig. 8, comprising:

Receiver module 801 is used to receive the physical data block that many reception antennas receive

With leading symbol or frequency pilot sign;

Channel estimation module 802 is used for the leading symbol or the frequency pilot sign that receive according to every reception antenna, estimates the physical channel from target BS and adjacent base station

Channel matrix constructing module 803 is used for the physical channel according to the estimation of every antenna

The physical channel matrix that structure is estimated

Weight coefficient module 804 is used for according to the physical channel matrix of estimating

And known noise variance matrix, obtain weight coefficient W _K

Balance module 805 is used for according to weight coefficient W _KThe physical data block that the reception antenna of portable terminal is received

Carry out equilibrium treatment, the physical data block of the estimation of the interference of adjacent base station that has been eliminated

Data inverse is arranged module 806, is used to offset the physical data block except the estimation of interference of adjacent base station

Carry out contrary the arrangement and handle, obtain the logic data block after contrary the arrangement

Data deinterlacing handles 807, is used for the logic data block after contrary the arrangement

Carry out deinterleaving and handle, obtain the logic data block after the deinterleaving

Recovery module 808 is used for number of repetition according to the data block logic data block after to deinterleaving

Carry out MRC and handle, obtained compressing the data block S of noise _i ^k

Fig. 9 is the detailed block diagram that self adaptation is eliminated interference of adjacent base station among the utility model the 3rd embodiment, among Fig. 9, comprising:

Receiver module 901 is used to receive the physical data block that many reception antennas receive

With leading symbol or frequency pilot sign;

Channel estimation module 902 is used for the leading symbol or the frequency pilot sign that receive according to every reception antenna, the physical channel that obtains estimating

Channel reverse is arranged module 903, to estimated channel

Carry out contrary the arrangement and handle, the logic channel that obtains the estimation after contrary the arrangement is

Channel de-interleaving block 904 to the logic channel of the estimation after contrary the arrangement is

Carry out deinterleaving and handle, the logic channel that obtains the estimation after the deinterleaving is

Data inverse is arranged module 905, is used for the physical data block that every portable terminal reception antenna is received

Carry out contrary the arrangement, obtain the logic data block z after contrary the arrangement _{Dp_i} ^l

Data deinterlacing module 906 is used for the logic data block Z after contrary the arrangement _{DP_i} ^lCarry out deinterleaving and handle, obtain the logic data block Z after the deinterleaving _i ^l

Balanced recovery module 907 is according to the logic channel of the estimation after the deinterleaving

To the data block Z after the deinterleaving _i ^lCarry out the equilibrium reduction and handle, obtained compressing the data block S of noise _i ^k

Below introduce in detail the method for carrying out interference eliminated according to the residing different base station of portable terminal overlay area.In order to be without loss of generality, the k in the following formula all represents the label of base station, i.e. k base station, and K represents the base station number, l all represents the label of reception antenna, i.e. l root reception antenna, L represents antenna number.

The physical data block that portable terminal receives by its reception antenna

As shown in Equation (15):

$Z_{i_{\mathrm{PHY}}}^l=\underset{k=1}{\overset{K}{\mathrm{\Σ}}}{\mathrm{\Ψ}}_{i_{\mathrm{PHY}}}^{\mathrm{lk}}{X}_{i_{\mathrm{PHY}}}^k+N_{i_{\mathrm{PHY}}}^l---\left(15\right)$

In the formula (15),

It is the physical data block that the l root antenna of portable terminal receives; L represents the label of reception antenna; Be physical channel from k base station to l root reception antenna; It is the additivity white Gaussian noise;

Be to be interweaved, repeat, arranged by the process that the base station sends to handle the physical data block that obtains, detailed process is as follows:

To the logic data block S after the grouping _{Org_j} ^kInterweave, generate the data block S of the back logic that interweaves _i ^kAs shown in Equation (16):

$S_i^k=f_{\mathrm{Inter}}\left(S_{\mathrm{Org}\_j}^k\right)---\left(16\right)$

In the formula (16), f _Inter() is the function that interweaves.

To the logic data block S after interweaving _i ^kCarry out repetition, generate the logic data block X after repeating _i ^kAs shown in Equation (17):

$X_i^k={[S_i^k{S}_{i+M}^k{S}_{i+2M}^k...S_{i+(N-1)M}^k]}^T---\left(17\right)$

In the formula (17), X _i ^kSize be M, i.e. expression has a M data subcarrier; Number of repetition is N; Wherein, X _i ^kIn data block S _I+j ^k, j=0, M ... (N-1) M all represents and S _i ^kData block after the identical repetition.

To the data block X after repeating _i ^kArrange, generate the physical data block after arranging

As described in formula (18):

$X_{i_{\mathrm{PHY}}}^k=f_{\mathrm{Permut}}\left(X_i^k\right)---\left(18\right)$

In the formula (18), f _Permut() is permutation function, and permutation function is defined as rearranging data block; X _i ^kBe the logic data block after repeating.

The physical channel that portable terminal obtains estimating according to leading symbol or frequency pilot sign

Be made as

Wherein, k=1,2 ... K. The physical channel of expression from the k base station to the estimation of l reception antenna.

The interference eliminated of delta-shaped region

For the portable terminal that is positioned at delta-shaped region, because there is the high reject signal from two adjacent base station capping units simultaneously in this zone, therefore portable terminal physical data block that its every reception antenna is received adopts the CCIC method to handle respectively, the logic data block of the interference of adjacent base station that has been eliminated

Offset logic data block S then except interference of adjacent base station _i ^kAdopt the MRC method to handle, obtain the data block of compression noise.Concrete grammar is as follows:

The physical data block that every reception antenna is received

Carry out contrary arrange (De-Permutation), obtain the logic data block Z after contrary the arrangement _{DP_i} ^l, as shown in Equation (19):

$Z_{\mathrm{DP}\_i}^l=f_{\mathrm{DE}-\mathrm{Permut}}\left(Z_{i_{\mathrm{PHY}}}^l\right)---\left(19\right)$

Physical channel to every reception antenna estimation

Carry out contrary the arrangement respectively, obtain the logic channel of the estimation after contrary the arrangement As shown in Equation (20):

${\widehat{\mathrm{\Ψ}}}_{\mathrm{DP}\_i}^{\mathrm{lk}}=f_{\mathrm{DE}-\mathrm{Permut}}\left({\widehat{\mathrm{\Ψ}}}_{i_{\mathrm{PHY}}}^{\mathrm{lk}}\right)---\left(20\right)$

In formula (19), (20), f _DE-Permut() is contrary permutation function.Wherein, the contrary inverse process that logic data block is arranged that is arranged as.

To the logic data block Z after contrary the arrangement _{DP_i} ^lCarry out deinterleaving, obtain the logic data block Z after the deinterleaving _i ^l, shown in formula (21):

$Z_i^l=f_{\mathrm{DE}\_\mathrm{Inter}}\left(Z_{\mathrm{DP}\_i}^l\right)---\left(21\right)$

To the logic channel of estimating

Carry out deinterleaving, obtain the logic channel of the estimation after the deinterleaving

Shown in formula (22):

${\widehat{\mathrm{\Ψ}}}_i^{\mathrm{lk}}=f_{\mathrm{DE}\_\mathrm{Inter}}\left({\widehat{\mathrm{\Ψ}}}_{\mathrm{DP}\_i}^{\mathrm{lk}}\right)---\left(22\right)$

In formula (21), (22), f _{DE_Inter}() is the deinterleaving function.Wherein, deinterleaving is the inverse process that logic data block is interweaved.If different data blocks has adopted different interleavers, then Dui Ying deinterleaver also should be different, and the interleaver that same data block adopts is corresponding one by one with deinterleaver.

Logic data block Z after the deinterleaving _i ^lExpansion is shown in formula (23):

$Z_i^l={\left[\begin{array}{cccc}{Y}_i^l& Y_{i+M}^l& ...& Y_{i+(N-1)M}^l\end{array}\right]}^T=\left[\begin{array}{c}{Y}_i^l\\ Y_{i+M}^l\\ .\\ .\\ .\\ Y_{i+(N-1)M}^l\end{array}\right]---\left(23\right)$

Wherein, the Y in the formula (23) _I+j ^l, j=0, M ... (N-1) S in M and the formula (17) _I+j ¹, j=0, M ... (N-1) M is corresponding.

The logic channel of the estimation after the deinterleaving

Expansion shown in formula (24):

${\widehat{\mathrm{\Ψ}}}_i^{\mathrm{lk}}={\left[\begin{array}{cccc}{\hat{H}}_i^{\mathrm{lk}}& {\hat{H}}_{i+M}^{\mathrm{lk}}& ...& {\hat{H}}_{i+(N-1)M}^{\mathrm{lk}}\end{array}\right]}^T---\left(24\right)$

Logic channel according to the estimation after the deinterleaving

And the number of repetition N of the logic data block of the estimation after the deinterleaving, the logic channel matrix that structure is estimated Shown in formula (25):

${\hat{H}}_i^{\mathrm{lK}}=\left[\begin{array}{cccc}{\hat{H}}_i^{l1}& {\hat{H}}_i^{l2}& ...& {\hat{H}}_i^{\mathrm{lK}}\\ {\hat{H}}_{i+M}^{l1}& {\hat{H}}_{i+\mathrm{<figure-callout\; id="2"\; label="M\; l"\; filenames="Y20082012378400281.png"\; state="\{\{state\}\}">M</figure-callout>}}^l& ...& {\hat{H}}_{i+M}^{\mathrm{lK}}\\ .& & & \\ .& ...& ...& \\ .& & & \\ {\hat{H}}_{i+(N-1)M}^{l1}& {\hat{H}}_{i+(N-1)\mathrm{<figure-callout\; id="2"\; label="M\; l"\; filenames="Y20082012378400281.png"\; state="\{\{state\}\}">M</figure-callout>}}^l& ...& {\hat{H}}_{i+(N-1)M}^{\mathrm{lK}}\end{array}\right]---\left(25\right)$

According to the logic channel matrix of estimating

And known noise variance matrix

Obtain weight coefficient W _LK, concrete shown in formula (26):

$W_{l_K}={(R_{N_i}^l+{{\hat{H}}_i^{\mathrm{lK}}}^T{\hat{H}}_i^{\mathrm{lK}})}^{-1}{{\hat{H}}_i^{\mathrm{lK}}}^T---\left(26\right)$

In the formula (26),

Be the noise variance matrix, wherein, l=1,2 ... L, l represent the label of reception antenna.

Can by preorder lead symbol or the guiding sign estimation come out.Shown in formula (27):

In the formula (27), ξ _i ^lBe the white noise variance, wherein, l=1,2 ... L, l represent the label of reception antenna.According to weight coefficient W _LKTo the logic data block Z after the deinterleaving _i ^lCarry out equilibrium, obtain on the every antenna elimination the data block after the interference of adjacent base station

Shown in formula (28):

${\hat{S}}_{\mathrm{li}}^k=\left[\begin{array}{c}{\hat{S}}_{\mathrm{li}}^1\\ {\hat{S}}_{\mathrm{<figure-callout\; id="2"\; label="li"\; filenames="Y20082012378400281.png"\; state="\{\{state\}\}">li</figure-callout>}}^2\\ .\\ .\\ .\\ {\hat{S}}_{\mathrm{li}}^K\end{array}\right]=W_{l_K}\left[\begin{array}{c}{Y}_i^l\\ Y_{i+M}^l\\ .\\ .\\ .\\ Y_{i+(N-1)M}^l\end{array}\right]---\left(28\right)$

To the elimination on the every antenna data block after the interference of adjacent base station

Carry out MRC and handle, obtained compressing the data block S of noise _i ^k, shown in formula (29):

${\stackrel{\&OverBar;}{S}}_i^k=\frac{1}{L}\underset{l=1}{\overset{L}{\mathrm{\&Sigma;}}}{\hat{S}}_{\mathrm{li}}^k---\left(29\right)$

In the formula (29), k=1,2 ... K, wherein, K represents the label of base station; L=1,2 ... L, wherein, l represents the label of reception antenna.

Because data block S _i ^kNot only eliminate interference of adjacent base station but also compressed noise, therefore improved the quality of signals of the reception of portable terminal greatly, significantly improved the communications of Mobile Terminals performance that is in the footprint edges delta-shaped region.

The processing of rectangular area

For the portable terminal that is positioned at the rectangular area, because this region memory is at the high reject signal from single adjacent base station capping unit, therefore, portable terminal utilizes the physical data block that its every reception antenna is received of many antennas

Adopt the CCIC method to handle the logic data block of the interference of adjacent base station that has been eliminated jointly

The logic data block of utilization repetition offsets the logic data block except interference of adjacent base station then

Adopt the MRC method to handle, obtained compressing the data block S of noise _i ^kConcrete grammar is as follows:

Portable terminal is according to the physical channel of estimating

The physical channel matrix that structure is estimated

Shown in formula (30):

${\widehat{\mathrm{\&Psi;}}}_i=\left[\begin{array}{cccc}{\widehat{\mathrm{\&Psi;}}}_{i_{\mathrm{PHY}}}^{11}& {\widehat{\mathrm{\&Psi;}}}_{i_{\mathrm{PHY}}}^{12}& ...& {\widehat{\mathrm{\&Psi;}}}_{i_{\mathrm{PHY}}}^{1K}\\ {\widehat{\mathrm{\&Psi;}}}_{i_{\mathrm{PHY}}}^{21}& {\widehat{\mathrm{\&Psi;}}}_{i_{\mathrm{PHY}}}^{22}& ...& {\widehat{\mathrm{\&Psi;}}}_{i_{\mathrm{PHY}}}^{2K}\\ .& & & \\ .& & & \\ .& & & \\ {\widehat{\mathrm{\&Psi;}}}_{i_{\mathrm{<figure-callout\; id="1"\; label="PHY\; L"\; filenames="Y20082012378400281.png"\; state="\{\{state\}\}">PHY</figure-callout>}}}^L& {\widehat{\mathrm{\&Psi;}}}_{i_{\mathrm{<figure-callout\; id="2"\; label="PHY\; L"\; filenames="Y20082012378400281.png"\; state="\{\{state\}\}">PHY</figure-callout>}}}^L& ...& {\widehat{\mathrm{\&Psi;}}}_{i_{\mathrm{PHY}}}^{\mathrm{LK}}\end{array}\right]---\left(30\right)$

In the formula (30), k=1,2 ... K, wherein, k represents the label of base station; L=1,2 ... L, wherein, l represents the label of reception antenna.For example, Represent the physical channel of k base station to the estimation of l reception antenna.

The physical data block that every antenna of portable terminal receives

Matrix expression shown in formula (31):

$\left[\begin{array}{c}{Z}_{i_{\mathrm{PHY}}}^1\\ Z_{i_{\mathrm{PHY}}}^2\\ .\\ .\\ .\\ Z_{i_{\mathrm{PHY}}}^L\end{array}\right]=\left[\begin{array}{cccc}{\widehat{\mathrm{\&Psi;}}}_{i_{\mathrm{PHY}}}^{11}& {\widehat{\mathrm{\&Psi;}}}_{i_{\mathrm{PHY}}}^{12}& ...& {\widehat{\mathrm{\&Psi;}}}_{i_{\mathrm{PHY}}}^{1K}\\ {\widehat{\mathrm{\&Psi;}}}_{i_{\mathrm{PHY}}}^{21}& {\widehat{\mathrm{\&Psi;}}}_{i_{\mathrm{PHY}}}^{22}& ...& {\widehat{\mathrm{\&Psi;}}}_{i_{\mathrm{PHY}}}^{2K}\\ .& & & \\ .& & & \\ .& & & \\ {\widehat{\mathrm{\&Psi;}}}_{i_{\mathrm{<figure-callout\; id="1"\; label="PHY\; L"\; filenames="Y20082012378400281.png"\; state="\{\{state\}\}">PHY</figure-callout>}}}^L& {\widehat{\mathrm{\&Psi;}}}_{i_{\mathrm{<figure-callout\; id="2"\; label="PHY\; L"\; filenames="Y20082012378400281.png"\; state="\{\{state\}\}">PHY</figure-callout>}}}^L& ...& {\widehat{\mathrm{\&Psi;}}}_{i_{\mathrm{PHY}}}^{\mathrm{LK}}\end{array}\right]\left[\begin{array}{c}{X}_{i_{\mathrm{PHY}}}^1\\ X_{i_{\mathrm{PHY}}}^2\\ .\\ .\\ .\\ X_{i_{\mathrm{PHY}}}^K\end{array}\right]+\left[\begin{array}{c}{N}_i^1\\ {\mathrm{<figure-callout\; id="2"\; label="N\; i"\; filenames="Y20082012378400281.png"\; state="\{\{state\}\}">N</figure-callout>}}_i^{}\\ .\\ .\\ .\\ N_i^L\end{array}\right]---\left(31\right)$

Portable terminal is according to the physical channel matrix of estimating

And known white noise variance matrix

Obtain weight coefficient W _K, shown in formula (32):

In the formula (32)

Be the function under the different estimation criterions.For example, adopt the estimation criterion of least mean-square error (MMSE, Minimum Mean Square Error), weight coefficient W _KShown in formula (33):

$W_K={(R_{N_i}+{{{\widehat{\mathrm{\&Psi;}}}_i}^T\widehat{\mathrm{\&Psi;}}}_i)}^{-1}{{\widehat{\mathrm{\&Psi;}}}_i}^T---\left(33\right)$

In the formula (33), It is known noise variance matrix.

According to weight coefficient W _KThe physical data block that the reception antenna of portable terminal is received

Carry out equilibrium treatment, the physical data block of the estimation of the interference of adjacent base station that has been eliminated Shown in formula (34):

${\hat{X}}_{\mathrm{iPHY}}^k=\left[\begin{array}{c}{\hat{X}}_{i_{\mathrm{PHY}}}^1\\ {\hat{X}}_{i_{\mathrm{PHY}}}^2\\ .\\ .\\ .\\ {\hat{X}}_{i_{\mathrm{PHY}}}^K\end{array}\right]=W_K\left[\begin{array}{c}{Z}_{i_{\mathrm{PHY}}}^1\\ Z_{i_{\mathrm{PHY}}}^2\\ .\\ .\\ .\\ Z_{i_{\mathrm{PHY}}}^L\end{array}\right]---\left(34\right)$

Offset physical data block except the estimation of interference of adjacent base station

Carry out contrary the arrangement and handle, obtain the logic data block after contrary the arrangement

Shown in formula (35):

${\hat{X}}_{\mathrm{DP}\_i}^k=f_{\mathrm{DE}-\mathrm{Permut}}\left({\hat{X}}_{\mathrm{iPHY}}^k\right)---\left(35\right)$

In the formula (35), f _DE-Permut() is contrary permutation function.Wherein, the contrary inverse process that logic data block is arranged that is arranged as.

To the logic data block after contrary the arrangement Carry out deinterleaving and handle, obtain the logic data block after the deinterleaving

Promptly eliminated the logic data block of the estimation of interference of adjacent base station, shown in formula (36):

${\hat{X}}_i^k=f_{\mathrm{DE}\_\mathrm{Inter}}\left({\hat{X}}_{\mathrm{DP}\_i}^k\right)---\left(36\right)$

In the formula (36), f _{DE_Inter}() is the deinterleaving function.Wherein, deinterleaving is the inverse process that logic data block is interweaved.If different data blocks has adopted different interleavers, then Dui Ying deinterleaver also should be different, and the interleaver that same data block adopts is corresponding one by one with deinterleaver.

Logic data block X after the repetition that sends with base station side shown in the aforementioned formula (17) _i ^kLogic data block after the corresponding deinterleaving

Expansion is shown in formula (37):

${\hat{X}}_i^k={\left[\begin{array}{ccccc}{\hat{S}}_i^k& {\hat{S}}_{i+M}^k& {\hat{S}}_{i+2M}^k& ...& {\hat{S}}_{i+(N-1)M}^k\end{array}\right]}^T---\left(37\right)$

In the formula (37), Size be M, i.e. expression has a M data subcarrier; Number of repetition is N; Wherein,

In data block

J=0, M ... (N-1) M all represent with

Data block after the identical repetition.

Offset logic data block except the estimation of interference of adjacent base station

Carry out MRC and handle, obtained compressing the data block S of noise _i ^k, shown in formula (38):

${\stackrel{\&OverBar;}{S}}_i^k=\frac{1}{N}\underset{j=1}{\overset{N}{\mathrm{\&Sigma;}}}{\hat{S}}_{i+(j-1)M}^k---\left(38\right)$

Because data block S _i ^kNot only eliminate interference of adjacent base station but also compressed noise, therefore improved the quality of signals of the reception of portable terminal greatly, significantly improved the communications of Mobile Terminals performance that is in the footprint edges rectangular area.

The processing of hexagonal area

For the portable terminal that is positioned at hexagonal area, because the portable terminal in this zone is subjected to a little less than the interference relatively from adjacent base station, interference is mainly the additivity white Gaussian noise, therefore, the data block that receives is directly carried out MRC handle the logic data block of the additivity white Gaussian noise that can be eliminated.If the antenna number of receiving terminal is L, be N in the number of repetition of transmitting terminal, then the synthetic number of times of MRC is L * N.

The physical data block that portable terminal receives by its reception antenna Shown in formula (39):

$Z_{i_{\mathrm{PHY}}}^l={\mathrm{\&Psi;}}_{i_{\mathrm{PHY}}}^{\mathrm{lk}}{X}_{i_{\mathrm{PHY}}}^k+N_{i_{\mathrm{PHY}}}^l---\left(39\right)$

In the formula (39),

Be l the signal that antenna receives; L is the label of antenna;

It is physical channel from the k target BS to l root reception antenna;

It is the additivity additive white Gaussian.

According to leading symbol or frequency pilot sign, obtain the physical channel of k target BS to the estimation of l root reception antenna

According to the physical channel of estimating

The physical data block that receives with every portable terminal reception antenna

Carry out MRC and handle the physical data block S that obtains compressing the additivity white Gaussian noise _i ^k, concrete steps are as follows:

The physical data block that every portable terminal reception antenna is received

Carry out contrary the arrangement and conciliate interleaving treatment, obtain through the contrary data block Z that conciliates interleaving treatment that arranges _i ^l, shown in formula (40):

$Z_i^l={\left[\begin{array}{cccc}{Y}_i^l& Y_{i+M}^l& ...& Y_{i+(N-1)M}^l\end{array}\right]}^T---\left(40\right)$

To estimated channel

Carry out contrary the arrangement and conciliate interleaving treatment, obtain the logic channel of arranging the estimation of conciliating interleaving treatment through contrary Shown in formula (41):

${\widehat{\mathrm{\&Psi;}}}_i^{\mathrm{lk}}={\left[\begin{array}{cccc}{\hat{H}}_i^{\mathrm{lk}}& {\hat{H}}_{i+M}^{\mathrm{lk}}& ...& {\hat{H}}_{i+(N-1)M}^{\mathrm{lk}}\end{array}\right]}^T---\left(41\right)$

According to the data block Z that conciliates interleaving treatment through contrary arrangement _i ^lWith the logic channel of conciliating the estimation of interleaving treatment through contrary arrangement Obtained compressing the data block of additivity white Gaussian noise, shown in formula (42):

${\stackrel{\&OverBar;}{S}}_i^k=\underset{l=1}{\overset{L}{\mathrm{\&Sigma;}}}\underset{j=1}{\overset{N-1}{\mathrm{\&Sigma;}}}{Y}_{i+\mathrm{JM}}^l{{\hat{H}}_{i+\mathrm{jM}}^{\mathrm{lk}}}^T{\left(\underset{l=1}{\overset{L}{\mathrm{\&Sigma;}}}\underset{j=1}{\overset{N-1}{\mathrm{\&Sigma;}}}{\left|{\hat{H}}_{i+\mathrm{jM}}^{\mathrm{lk}}\right|}^2\right)}^{-1}---\left(42\right)$

Be mainly the additivity white Gaussian noise owing to be in the interference that the portable terminal of center coverage is subjected to, therefore, this method according to the physical channel that the leading symbol that receives on the every antenna or frequency pilot sign obtain the estimation of base station to the every antenna is

Physical channel to the estimation on the every antenna is then

The physical data block that receives with every portable terminal reception antenna After carrying out contrary arrangement reconciliation interleaving treatment, carry out MRC more jointly and handle the data block that has obtained compressing noise, simplified the portable terminal processing procedure to received signal that is in center coverage greatly.

The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all within spirit of the present utility model and principle; to any modification, change that the utility model embodiment did, make up, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.

Claims (12)

1. a self adaptation is eliminated the interference of adjacent base station device, it is characterized in that, comprising:

Receiver module is used for by physical data block, leading symbol or the sequence of pilot symbols of at least two reception antennas receptions from target BS and adjacent base station;

The mobile terminal area determination module, be used for obtaining the received signal intensity level of target BS and adjacent base station according to leading symbol or sequence of pilot symbols, the threshold value of setting area partial objectives for base station coverage area compares to determine target BS overlay area, portable terminal place with the received signal intensity level and the threshold value of target BS and adjacent base station;

Data processing module is used for according to target BS overlay area, portable terminal place, adopts the combination that interference of adjacent base station is eliminated and high specific is synthetic that the physical data block that receives is handled.

2. method according to claim 1 is characterized in that, the received signal intensity level of described target BS and adjacent base station comprises the ratio of the received signal intensity of target BS and adjacent base station.

3. method according to claim 1 is characterized in that, described target BS overlay area comprises:

Target BS covers the central area, exists the target BS of single interference of adjacent base station to cover fringe region and exist the target BS of at least two interference of adjacent base station to cover fringe region.

4. device according to claim 1 is characterized in that, described mobile terminal area determination module comprises:

Signal strength signal intensity is calculated module, is used for obtaining according to leading symbol or sequence of pilot symbols the received signal intensity level of target BS and adjacent base station;

The threshold setting module, the threshold value of setting area partial objectives for base station coverage area;

Judge module relatively is used for the target BS overlay area, place that received signal intensity level and threshold value with target BS and adjacent base station compare to determine portable terminal.

5. device according to claim 1 is characterized in that, described data processing module comprises:

Data inverse is arranged module, and the physical data block that is used for that every reception antenna is received is carried out contrary the arrangement, obtains the logic data block after contrary the arrangement;

Channel estimation module is used for according to leading symbol or frequency pilot sign, estimates the physical channel from target BS and adjacent base station;

Channel reverse is arranged module, is used for that the physical channel of estimating is carried out contrary the arrangement and handles, and obtains the logic channel of the estimation after contrary the arrangement;

The data deinterlacing module is used for that the logic data block after contrary the arrangement is carried out deinterleaving and handles, and obtains the logic data block after the deinterleaving;

The channel de-interleaving block is used for logic channel to the estimation after contrary the arrangement and carries out deinterleaving and handle, and obtains the logic channel of the estimation after the deinterleaving;

The channel matrix constructing module is used for the number of repetition according to the logic channel and the logic data block of the estimation after the deinterleaving, the logic channel matrix that structure is estimated;

The weight coefficient module is used for obtaining first weight coefficient according to logic channel matrix and known noise variance matrix;

Balance module is used for carrying out equilibrium treatment according to the logic data block of first weight coefficient after to deinterleaving, the logic data block after the interference of adjacent base station that obtained the elimination that receives on the every antenna;

Recovery module has been used for to the elimination that receives on the every antenna data block after the interference of adjacent base station and has carried out that high specific is synthetic to be handled, and has obtained compressing the data block of noise.

6. device according to claim 1 is characterized in that, described data processing module comprises:

Channel estimation module is used for the leading symbol or the frequency pilot sign that receive according to every reception antenna, estimates the physical channel from target BS and adjacent base station;

The channel matrix constructing module is used for the physical channel according to every reception antenna estimation, the physical channel matrix that structure is estimated;

The weight coefficient module is used for obtaining second weight coefficient according to physical channel matrix of estimating and known noise variance matrix;

Balance module is used for according to second weight coefficient physical data block that receives being carried out equilibrium treatment, the physical data block of the estimation of the interference of adjacent base station that has been eliminated;

Data inverse is arranged module, is used to offset carry out contrary the arrangement except the physical data block of the estimation of interference of adjacent base station and handle, and obtains the logic data block after contrary the arrangement;

Data deinterlacing is handled, and is used for that the logic data block after contrary the arrangement is carried out deinterleaving and handles, and obtains understanding the logic data block after the interleaving treatment;

Recovery module, the logic data block after being used for according to the number of repetition of data block deinterleaving being handled carry out that high specific is synthetic to be handled, and have obtained the data block of compression noise.

7. device according to claim 1 is characterized in that, described data processing module comprises:

Channel estimation module is used for the leading symbol or the frequency pilot sign that receive according to every reception antenna, the physical channel that obtains estimating;

Channel reverse is arranged module, is used for that the physical channel of estimating is carried out contrary the arrangement and handles, and obtains the logic channel of the estimation after contrary the arrangement;

The channel de-interleaving block is used for logic channel to the estimation after contrary the arrangement for carrying out the deinterleaving processing, obtains the logic channel of the estimation after the deinterleaving;

Data inverse is arranged module, and the physical data block that is used for that every portable terminal reception antenna is received is carried out contrary the arrangement and handled, and obtains the logic data block after contrary the arrangement;

The data deinterlacing module is used for that the logic data block after contrary the arrangement is carried out deinterleaving and handles, and obtains the logic data block after the deinterleaving;

Balanced recovery module is used for logic channel according to the estimation after the deinterleaving logic data block after to deinterleaving and carries out equilibrium reduction processing, has obtained compressing the data block of noise.

8. the receiver of a self adaptation elimination interference of adjacent base station is characterized in that, comprising:

Receiver module is used for by physical data block, leading symbol or the sequence of pilot symbols of at least two reception antennas receptions from target BS and adjacent base station;

The mobile terminal area determination module, be used for obtaining the received signal intensity level of target BS and adjacent base station according to leading symbol or sequence of pilot symbols, the threshold value of setting area partial objectives for base station coverage area compares to determine target BS overlay area, portable terminal place with the received signal intensity level and the threshold value of target BS and adjacent base station;

Data processing module is used for according to target BS overlay area, portable terminal place, adopts the combination that interference of adjacent base station is eliminated and high specific is synthetic that the physical data block that receives is handled.

9. receiver according to claim 8 is characterized in that, described mobile terminal area determination module comprises:

Signal strength signal intensity is calculated module, is used for obtaining according to leading symbol or sequence of pilot symbols the received signal intensity level of target BS and adjacent base station;

The threshold setting module, the threshold value of setting area partial objectives for base station coverage area;

Judge module relatively is used for the target BS overlay area, place that received signal intensity level and threshold value with target BS and adjacent base station compare to determine portable terminal.

10. receiver according to claim 8 is characterized in that, described data processing module comprises:

Data inverse is arranged module, and the physical data block that is used for that every reception antenna is received is carried out contrary the arrangement, obtains the logic data block after contrary the arrangement;

Channel estimation module is used for according to leading symbol or frequency pilot sign, estimates the physical channel from target BS and adjacent base station;

Channel reverse is arranged module, is used for that the physical channel of estimating is carried out contrary the arrangement and handles, and obtains the logic channel of the estimation after contrary the arrangement;

The data deinterlacing module is used for that the logic data block after contrary the arrangement is carried out deinterleaving and handles, and obtains the logic data block after the deinterleaving;

The channel de-interleaving block is used for logic channel to the estimation after contrary the arrangement and carries out deinterleaving and handle, and obtains the logic channel of the estimation after the deinterleaving;

The channel matrix constructing module is used for the number of repetition according to the logic channel and the logic data block of the estimation after the deinterleaving, the logic channel matrix that structure is estimated;

The weight coefficient module is used for obtaining first weight coefficient according to logic channel matrix and known noise variance matrix;

Balance module is used for carrying out equilibrium treatment according to the logic data block of first weight coefficient after to deinterleaving, the logic data block after the interference of adjacent base station that obtained the elimination that receives on the every antenna;

Recovery module has been used for to the elimination that receives on the every antenna data block after the interference of adjacent base station and has carried out that high specific is synthetic to be handled, and has obtained compressing the data block of noise.

11. receiver according to claim 8 is characterized in that, described data processing module comprises:

Channel estimation module is used for the leading symbol or the frequency pilot sign that receive according to every reception antenna, estimates the physical channel from target BS and adjacent base station;

The channel matrix constructing module is used for the physical channel according to every reception antenna estimation, the physical channel matrix that structure is estimated;

The weight coefficient module is used for obtaining second weight coefficient according to physical channel matrix of estimating and known noise variance matrix;

Balance module is used for according to second weight coefficient physical data block that receives being carried out equilibrium treatment, the physical data block of the estimation of the interference of adjacent base station that has been eliminated;

Data inverse is arranged module, is used to offset carry out contrary the arrangement except the physical data block of the estimation of interference of adjacent base station and handle, and obtains the logic data block after contrary the arrangement;

Data deinterlacing is handled, and is used for that the logic data block after contrary the arrangement is carried out deinterleaving and handles, and obtains understanding the logic data block after the interleaving treatment;

Recovery module, the logic data block after being used for according to the number of repetition of data block deinterleaving being handled carry out that high specific is synthetic to be handled, and have obtained the data block of compression noise.

12. receiver according to claim 8 is characterized in that, described data processing module comprises:

Channel estimation module is used for the leading symbol or the frequency pilot sign that receive according to every reception antenna, the physical channel that obtains estimating;

Channel reverse is arranged module, is used for that the physical channel of estimating is carried out contrary the arrangement and handles, and obtains the logic channel of the estimation after contrary the arrangement;

The channel de-interleaving block is used for logic channel to the estimation after contrary the arrangement for carrying out the deinterleaving processing, obtains the logic channel of the estimation after the deinterleaving;

Data inverse is arranged module, and the physical data block that is used for that every portable terminal reception antenna is received is carried out contrary the arrangement and handled, and obtains the logic data block after contrary the arrangement;

The data deinterlacing module is used for that the logic data block after contrary the arrangement is carried out deinterleaving and handles, and obtains the logic data block after the deinterleaving;

Balanced recovery module is used for logic channel according to the estimation after the deinterleaving logic data block after to deinterleaving and carries out equilibrium reduction processing, has obtained compressing the data block of noise.

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