CN101630960B - Combined detection method and apparatus for communication equipment and communication equipment - Google Patents

Abstract

The invention discloses a combined detection method and apparatus for communication equipment and communication equipment thereof. The combined detection method includes dividing each activation channel in the co-frequency cell into two sub-channels; computing channel information vectors of effective sub-channels using channel impulse response and channel code of effective sub-channels whose window power in the co-frequency cell is higher than zero; and computing generation vectors for generating parameters related to modulation information and channel information of useful signals by using channel information vectors of each activated channel and every effective sub-channels in the service cell, and using the generated vectors for combined detection.

Description

For associated detecting method and device and the communication equipment of communication equipment

Technical field

The present invention relates to wireless communication field, in particular to a kind of associated detecting method and device and communication equipment that can be used in TDS-CDMA system.

Background technology

In code division multiple access (CDMA) system, the signal of the multiple users in same community is aliasing on time domain and frequency domain, when reception, need on numeric field, separate by certain signal separating method.

In cdma system, between the signal due to each user, there is certain correlation, so conventionally exist multiple access to disturb (MAI).The signal separating method of traditional cdma system disturbs multiple access to regard the interference that thermal noise is the same as.This signal by each user separates regards that the signal separation techniques of self-contained process is called as the detection of alone family as.In fact, the information that multiple access comprises many priori in disturbing, as the subscriber channel code knowing, each user's channel estimating etc.If these prior informations are used, the accuracy that signal separates will be significantly increased.The signal separating method that this prior information making full use of in multiple access interference is regarded all users' signal separation as a RUP is called as Multiuser Detection.

According to the difference to code division multiple access processing method, multiuser detection can be divided into again two kinds of Interference Cancellation and joint-detection.The basic thought of interference cancellation techniques is decision-feedback, first from total reception signal, rule out the wherein data of a part, reconstruct signal corresponding to data according to data and user's spreading code, then deduct reconstruction signal from total reception signal, so loop iteration.Associated detection technique makes full use of multiple access and disturbs, the signal separation techniques of within a step, all users' signal all being separated.Under normal circumstances, the process of joint-detection is to utilize reception signal to draw the Linear Minimum Variance estimation (LMMSE) of the useful signal comprising in this reception signal.

In TD SDMA (TD-SCDMA) system, receiving signal can be defined as

$Y=B\·x+\hat{B}\·\hat{x}+n$ Equation (1)

Wherein, Y represents to receive signal, and x represents to receive the useful signal comprising in signal, and B represents the parameter relevant with channel information with the modulation intelligence of useful signal, the noise signal that the presence of intercell interference of all co-frequency cells by multiple access interference and Serving cell that comprise in expression reception signal causes,

represent the parameter relevant with channel information with the modulation intelligence of noise signal, n represents to receive the white Gaussian noise comprising in signal.N=[n ₁n ₂..., n _nQ+W-1] ^t, n _ithat variance is σ ²and Normal Distribution N (0, σ ²) independent same distribution white Gaussian noise, 1≤i≤NQ+W-1.Wherein, N represents to receive the number of symbols comprising in signal, and Q represents to receive the spreading factor of the subscriber equipment that receives signal, and W represents the window width of the transmission channel that receives signal.

For the purpose of simple, in traditional joint-detection, conventionally suppose that Bx receives the useful part comprising in signal,

to receive the variance comprising in signal to be

and Normal Distribution

white Gaussian noise.Utilize this hypothesis, estimate to be reduced to for the Linear Minimum Variance that receives the useful signal x comprising in signal

$\tilde{x}={(B^{H}B+{\widehat{\mathrm{\σ}}}^{2}I)}^{-1}{B}^{H}Y$ Equation (2)

But in fact,

be by the noise that multiple access disturbs and the presence of intercell interference of the co-frequency cell of Serving cell causes, should be assumed to be white Gaussian noise.So, estimate to be reduced to for the Linear Minimum Variance of x

$\tilde{x}={(B^H{({\mathrm{\σ}}^{2}I+\hat{B}{\hat{B}}^H)}^{-1}B+I)}^{-1}{B}^H{({\mathrm{\σ}}^{2}I+\hat{B}{\hat{B}}^H)}^{-1}Y$ Equation (3)

Can be found out by above description, before the Linear Minimum Variance that calculates x is estimated, need to calculate the B parameter relevant with channel information with the modulation intelligence of the useful signal comprising in reception signal.B parameter generates by generating factor V, is the problem that first will solve so obtain generation factor V.

Generate the matrix that factor V is made up of the channel information vector of the each activation channel in Serving cell and co-frequency cell thereof.Due to timing, need to the timing based on Serving cell be aimed at by channel impulse response and the channel code of the activation channel from different districts mutually.Suppose that (also referred to as the 1st co-frequency cell, its frame is τ regularly with respect to Serving cell ₁=0) the frame timing of i co-frequency cell is τ _i, 1≤i≤CellNum (CellNum represent including Serving cell take the total number of the co-frequency cell of same frequency with Serving cell), k in i co-frequency cell activates the channel information vector V of channel _{i, k}can be expressed as:

equation (4)

Wherein, 1≤i≤CellNum, 1≤k≤K.CellNum represents to take the total number of the co-frequency cell of same frequency with Serving cell including Serving cell.K represents i the channel number in co-frequency cell. $h_i^k=[h_i^{k,1}{h}_i^{k,2}...h_i^{k,W}]$ Represent k in i co-frequency cell channel impulse response that activates channel. $c_i^{\left(k\right)}=[c_i^{k,1}{c}_i^{k,2}...c_i^{k,Q}]$ Represent k in i co-frequency cell channel code (comprising orthogonal variable frequency extension factor code and scrambler) that activates channel.

In TD-SCDMA receiver, simple in order to realize, conventionally to generating the line number Row of factor V _numwith columns Column _numlimit., 0≤Row _num≤ Q+W, 0≤Column _num≤ 16.Wherein, Q=16 is the spreading factor of TD-SCDMA receiver, and W=16 is the window width that TD-SCDMA receiver uses.If there is V _{i, k}(j) > 0 (j > Q+W), the information that the channel information vector of k of i co-frequency cell activation channel comprises will be lost, thereby causes joint detection results subsequently not accurate enough.

Summary of the invention

Problem in view of the above, the invention provides a kind of associated detecting method for communication equipment and device and communication equipment of novelty.

Comprise according to the associated detecting method of the embodiment of the present invention: according to the frame timing of each co-frequency cell of Serving cell, the each activation channel distribution in described co-frequency cell is become to two sub-channels; Utilize window power in described co-frequency cell to be greater than channel impulse response and the channel code of zero subchannel (, effectively subchannel), calculate the channel information vector of described effective subchannel; And the channel information that utilizes the each activation channel in Serving cell is vectorial and the channel information vector of described effective subchannel, calculate the generation vector for generating the parameter relevant with channel information with the modulation intelligence of useful signal that receives signal, and utilize and generate vector and carry out joint-detection.

Comprise according to the joint-detection device of the embodiment of the present invention: Channel division unit, be configured to the frame timing according to each co-frequency cell of Serving cell, the each activation channel distribution in described co-frequency cell is become to two sub-channels; Vector calculation unit, is configured to utilize window power in described co-frequency cell to be greater than channel impulse response and the channel code of effective subchannel of zero, calculates the channel information vector of described effective subchannel; And joint-detection unit, be configured to utilize the channel information vector of the each activation channel in Serving cell and the channel information vector of described effective subchannel, calculate the generation vector for generating the parameter relevant with channel information with the modulation intelligence of useful signal that receives signal, and utilize and generate vector and carry out joint-detection.

By the present invention, the information that can avoid as much as possible channel information vector to comprise is lost, thereby can obtain joint detection results more accurately.

Brief description of the drawings

Below in conjunction with accompanying drawing in the description of the specific embodiment of the present invention, the present invention may be better understood, wherein:

Fig. 1 shows the brief block diagram of TD-SCDMA wireless communication system;

Fig. 2 shows the brief block diagram of the concrete structure of the subscriber equipment shown in Fig. 1;

Fig. 3 shows the configuration block diagram of joint-detection device according to an embodiment of the invention;

Fig. 4 shows the flow chart of associated detecting method according to an embodiment of the invention; And

Fig. 5 shows and utilizes according to the subscriber equipment of associated detecting method/device of the present invention and utilize the relativity schematic diagram of Block Error Rate of the subscriber equipment of existing associated detecting method/device.

Embodiment

Feature and the exemplary embodiment of various aspects of the present invention will be described in detail below.Followingly be applied as routine description with TD-SCDMA and contained many details, to complete understanding of the present invention is provided.But, it will be apparent to one skilled in the art that the present invention can implement some details in these details in the case of not needing.Below the description of embodiment is only used to by illustrating that example of the present invention provides the clearer understanding to the present invention.The present invention is never limited to any concrete configuration and the algorithm that propose below, but has covered under the premise of without departing from the spirit of the present invention any amendment, replacement and the improvement of coherent element, parts and algorithm.

Fig. 1 shows the brief block diagram of TD-SCDMA wireless communication system.As shown in Figure 1, this wireless communication system mainly comprises core net 102, wireless access network 104 and subscriber equipment 106.Core net 102 is main process audio call, data connection and exchange, customer position information management, network characteristic and Service control, signaling and user profile transmission mechanism in wireless communication system and with being connected and route etc. of other network.Wireless access network 104 provides the connection of subscriber equipment and core net, and the management of responsible Radio Resource and allotment, comprises base station and radio network controller two category nodes.Subscriber equipment 106 can be for example the Portable data processing equipment that mobile phone, personal digital assistant (PDA) or other have the function communicating in TD-SCDMA wireless communication system.

Fig. 2 shows the brief block diagram of the concrete structure of subscriber equipment shown in Fig. 1.As shown in Figure 2, this subscriber equipment mainly comprises: radio-frequency module 202, forming filter 204, channel estimation module 206, multipath tracking module 208, activation detection module 210, joint-detection module 212, frequency deviation estimating modules 214, ANR/SNR measurement module 216, demapping (demapping) module 218 and decoder module 220.Radio-frequency module 202 unloads ripple and analog-to-digital conversion processing to received analog signal, is input to subordinate so that the analog signal being received is transformed to baseband digital signal.Forming filter 204, root raised cosine filter (SRRC) carries out pulse shaping to baseband digital signal.Channel estimation module 206 carries out the channel estimating of multiple communities for the midamble code sequence in the signal after pulse shaping.Multipath tracking module 208 is utilized channel estimation results, determines optimum sampling point, and carries out the multipath window position tracking of each community.Activate detection module 210 and activate detection and code channel activating detection for carrying out window.Joint-detection module 212 is carried out certain calculating to the data that are aliasing in each code channel together, obtains the transmission symbol on each code channel.Frequency deviation estimating modules 214 is utilized the skew of joint detection results estimated frequency.ANR/SNR measurement module 216 utilizes joint detection results to carry out amplitude and noise ratio (ANR) and signal to noise ratio (SNR) is measured.Demapping (demapping) module 218 is that soft bit is delivered to decoder module by the symbol transition of joint-detection module output.Decoder module 220, to the soft bit result of demapping module output is decoded, obtains information bit.

The disclosure is mainly for the improvement of joint-detection module.Should be noted that, although provided TD-SCDMA wireless communication system as depicted in figs. 1 and 2 and the ios dhcp sample configuration IOS DHCP of subscriber equipment above, but can recognize, can use therein communication system of the present invention and subscriber equipment to be not limited to this concrete example, but can be suitable for carrying out various systems and the equipment of joint-detection.

Fig. 3 shows the configuration block diagram of joint-detection device according to an embodiment of the invention.As shown in Figure 3, this joint-detection device comprises Channel division unit 302, vector calculation unit 304 and joint-detection unit 306.Wherein, Channel division unit 302, according to the frame timing of each co-frequency cell of Serving cell, becomes two sub-channels by the each activation channel distribution in each co-frequency cell.Vector calculation unit 304 utilizes the window power in each co-frequency cell to be greater than channel impulse response and the channel code of zero subchannel (, effectively subchannel), calculates the channel information vector of each effective subchannel.Joint-detection unit 306 utilizes the channel information vector of the each activation channel in Serving cell and the channel information vector of each effective subchannel, calculate the generation vector for generating the parameter relevant with channel information with the modulation intelligence of useful signal that receives signal, and utilize and generate vector and carry out joint-detection.Wherein, Channel division unit 302 further comprises and cuts apart performance element 3022 and channel expansion unit 3024.Vector calculation unit 304 further comprises power acquiring unit 3042, channel bank 3044 and calculation execution unit 3046.

Below with reference to Fig. 4, describe associated detecting method according to an embodiment of the invention in detail.Fig. 4 shows the example flow diagram of associated detecting method according to an embodiment of the invention.As shown in Figure 4, this associated detecting method mainly comprises the following steps:

In step S402, according to the frame timing of each co-frequency cell of Serving cell, the each activation channel distribution in each co-frequency cell is become to two parts, and regard these two parts as two channels (subchannel) and process.This step for example can be completed by Channel division unit 302.

Particularly, can, according to relation between the frame timing of each co-frequency cell and the frame timing of Serving cell, the each activation channel distribution in each co-frequency cell be become to front terminal channel and rear terminal channel; And the channel impulse response of front-end and back-end subchannel is expanded to the row vector of length-specific.

For example, in TD-SCDMA system, can be by the frame timing τ with respect to Serving cell ₁=0 has postponed τ _ii co-frequency cell in k activate channel distribution become two parts (, front-end and back-end subchannel).Wherein, the channel impulse response of this front terminal channel is expressed as the channel impulse response of this rear terminal channel is expressed as

this front terminal channel with respect to the symbol offset of Serving cell is

this rear terminal channel with respect to the symbol offset of Serving cell is

represent to get to be not more than τ _i/ 16 maximum integer.Then, respectively by the channel impulse response of front terminal channel

channel impulse response with rear terminal channel

expand to the row vector that for example length is 17.Particularly, as shown in following equation (5)～(6):

Eindx=min (16,17-τ _i%16) equation (5)

equation (6)

For example, can the activation channel distribution in co-frequency cell be become to two sub-channels by the performance element 3022 of cutting apart in Channel division unit 302, and by the channel expansion unit 3024 in Channel division unit 302, the channel impulse response of every sub-channels be expanded.

In step S404, utilize channel impulse response and the channel code of the effective subchannel in each co-frequency cell, calculate the channel information vector of each effective subchannel.This step for example can be completed by vector calculation unit 304.

Particularly, in step S404, first calculate the window power of all subchannels, delete window power and be not more than zero subchannel (, invalid subchannel), the subchannel (, effective subchannel) that keeps window power to be greater than zero.Then, the channel code of utilizing the channel impulse response of each effective subchannel and marking off the activation channel of this effective subchannel from it, calculates the channel information vector of this effective subchannel.

For example, can calculate by the power acquiring unit 3042 in vector calculation unit 304 the window power of all subchannels, delete invalid subchannel the subchannel of remaining valid by the channel bank 3044 in vector calculation unit 304, and calculate the channel information vector of effective subchannel by the calculation execution unit 3044 in vector calculation unit 304.

In step S406, utilize the channel information vector of the each activation channel in Serving cell and the channel information vector of each effective subchannel, calculate the generation vector for generating the parameter relevant with channel information with the modulation intelligence of useful signal that receives signal, and utilize and generate vector and carry out joint-detection.This step for example can be completed by joint-detection unit 306.

For example,, with respect to the channel information vector V of the m sub-channels in i co-frequency cell of Serving cell _{i, m}can be expressed as following equation (7):

$V_{i,m}={[b_i^{m,1}...b_i^{m,Q+W}]}^T={[{\tilde{h}}_i^m*c_i^{m\%K}]}^T$ Equation (7)

In joint-detection, can be based on each channel the symbol offset SymbolOffset with respect to Serving cell _i ^kjoint detection results to each channel is ressembled.Wherein, the number of symbol offset is the number that add zero before the information bit being sent by respective channel to.

That is to say, in joint-detection, adopt after channel disassemble technique, activate channel and be divided into two sub-channels, the channel impulse response of one of them subchannel has generated a channel information vector (for example) V with the channel code convolution that marks off the activation channel of this subchannel from it _{i, k}, the channel impulse response of another subchannel has generated another channel information vector (for example) V with the channel code convolution that marks off the activation channel of this subchannel from it _{i, k+K}.In generator matrix V, two sub-channels that mark off be taken as two independently channel carry out joint-detection.Wherein, can obtain a row testing result for every sub-channels $X_{i,k}=(x_{i,\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="H2009101510640E00041.png"\; state="\{\{state\}\}">k</figure-callout>}}^1,x_{i,\mathrm{<figure-callout\; id="2"\; label="k"\; filenames="H2009101510640E00041.png"\; state="\{\{state\}\}">k</figure-callout>}}^2,...,x_{i,k}^N),$ $X_{i,k+K}=(x_{i,k+\mathrm{<figure-callout\; id="1"\; label="K"\; filenames="H2009101510640E00041.png"\; state="\{\{state\}\}">K</figure-callout>}}^1,x_{i,k+\mathrm{<figure-callout\; id="2"\; label="K"\; filenames="H2009101510640E00041.png"\; state="\{\{state\}\}">K</figure-callout>}}^2,...,x_{i,k+K}^N),$ Here x _{i, k} ^jk j symbol that activation channel above transmits in certain burst (burst) in i co-frequency cell.Due to two sub-channels that in fact mark off corresponding be same channel, so its testing result is correlated with.According to maximum signal to noise ratio combination principle, the testing result of above-mentioned two sub-channels is merged and can obtain following result:

$Z_{i,k}=(z_{i,\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="H2009101510640E00041.png"\; state="\{\{state\}\}">k</figure-callout>}}^1,z_{i,\mathrm{<figure-callout\; id="2"\; label="k"\; filenames="H2009101510640E00041.png"\; state="\{\{state\}\}">k</figure-callout>}}^2+z_{i,k+\mathrm{<figure-callout\; id="2"\; label="K"\; filenames="H2009101510640E00041.png"\; state="\{\{state\}\}">K</figure-callout>}}^2,...,z_{i,k}^N),$

$z_{i,\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="H2009101510640E00041.png"\; state="\{\{state\}\}">k</figure-callout>}}^1=x_{i,\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="H2009101510640E00041.png"\; state="\{\{state\}\}">k</figure-callout>}}^1$

$z_{i,k}^j={\mathrm{ANR}}_{i,k}{x}_{i,k}^j+{\mathrm{ANR}}_{i,k+K}{x}_{i,k+K}^j,j=2,..,N$

Here ANR, _{i, k}and ANR _{i, k+K}be respectively the amplitude and noise ratio on above-mentioned two sub-channels.

In multimedia broadcast/group broadcast service (MBMS) scene, because same information is transmitted in multiple communities simultaneously, therefore, the channel information vector V that the activation channel of the transmission identical information from different districts can be generated _{i, j}press time unifying and be added, thereby merge into a new channel information vector.Illustrate as an example of the identical community of two timings example below.

Suppose the moment at t, subscriber equipment has received the reception signal from community 1 and community 2 simultaneously $r\left(t\right)=\underset{i=1}{\overset{2}{\mathrm{\&Sigma;}}}{h}_i\left(t\right)\&CenterDot;{\mathrm{SC}}_{i,k}\left(t\right)\&CenterDot;s_{i,k}\left(t\right)+n\left(t\right).$ Here, r (t) is the reception signal in t moment; h _i(t) be the t moment from the channel fading factor in the signal component of cell i.For simply, suppose that each community only has a footpath, SC here _{i, k}(t) be k channel code (it is the product of scrambler and spreading code) corresponding to activation channel of t moment cell i.S _{i, k}(t) be k the signal transmission activating on channel of t moment cell i, n (t) is the noise in t moment.Due to the same signal of each cell transmission under MBMS scene, i.e. s _{i, k}(t)=s _{1, k}(t), i=1,2, so $r\left(t\right)=(\underset{i=1}{\overset{2}{\mathrm{\&Sigma;}}}{h}_i\left(t\right)\&CenterDot;{\mathrm{SC}}_{i,k}\left(t\right)){\mathrm{<figure-callout\; id="1"\; label="s"\; filenames="H2009101510640E00041.png"\; state="\{\{state\}\}">s</figure-callout>}}_{1,k}\left(t\right)+n\left(t\right).$ At detected transmission signal s _{i, k}(t), time, can first merge h _i(t) SC _{i, k}(t) part, then ask s _{i, k}(t).And h _i(t) SC _{i, k}(t) merging of part is equivalent to channel information vector V _{i, k}(i=1,2) are merged into

Suppose that there is the delay of 8 chips community 2 with respect to Serving cell 1, also just have the delay of 8 chips from the MBMS information of community 2.Now, the channel information vector being obtained by front terminal channel in community 2 can be merged into a new channel information vector with corresponding channel information vector in community 1, and the channel information vector being obtained by rear terminal channel has the time difference of a symbol (i.e. 16 chips), therefore, here can only be put in generator matrix V as an independent channel, after joint-detection, then symbol aligned merges.

Fig. 5 illustrates and utilizes according to the subscriber equipment of associated detecting method/device of the present invention and utilize the relativity schematic diagram of Block Error Rate of the subscriber equipment of existing associated detecting method/device.In Fig. 5, ordinate represents Block Error Rate (BLER), be the error probability of transmission block after cyclic check code (CRC) verification, abscissa represents the ratio of power spectral density (Ior) with other communities and user's interference (the not comprising thermal noise) power spectral density (Ioc) of useful signal, i.e. Ior/Ioc.As can be seen from Figure 5, in the situation that Ior/Ioc is identical, utilize the Block Error Rate that is starkly lower than the subscriber equipment that utilizes existing associated detecting method/device according to the Block Error Rate of the subscriber equipment of associated detecting method/device of the present invention.

Below with reference to specific embodiments of the invention, the present invention has been described, but those skilled in the art all understand, can carry out various amendments, combination and change to these specific embodiments, and can not depart from the spirit and scope of the present invention that limited by claims or its equivalent.

Can perform step with hardware or software as required.Note, without departing from the scope of the invention, can add step, therefrom remove step or amendment step wherein to the flow chart providing in this specification.In general, flow chart is just used to refer to a kind of possible sequence for the basic operation of practical function.

Embodiments of the invention can utilize programming general purpose digital computer, utilize application-specific integrated circuit (ASIC), programmable logic device, field programmable gate array, light, chemistry, biological, system quantum or nanometer engineering, assembly and mechanism to realize.In general, function of the present invention can be realized by any means known in the art.Can use distributed or networked system, assembly and circuit.The communication of data or to transmit can be wired, wireless or by any other means.

Also will recognize, according to the needs of application-specific, one or more can, by more separating or more integrated mode realizes, or being removed even in some cases or being deactivated in the key element shown in accompanying drawing.The journey logic bomb that realization can be stored in machine readable media is carried out above-mentioned any method with permission computer, also within the spirit and scope of the present invention.

In addition, it is only exemplary that any signal arrows in accompanying drawing should be considered to, instead of restrictive, unless separately there is concrete instruction.In addition, unless otherwise, term "or" used herein is generally to refer to "and/or".Make to separate or the ability of combination while not knowing when term is also contemplated as, the combination of assembly or step also will be considered to record.

Claims (15)

1. for an associated detecting method for communication equipment, it is characterized in that, comprising:

According to the frame timing of each co-frequency cell of Serving cell, the each activation channel distribution in described co-frequency cell is become to two sub-channels;

The subchannel that utilizes the window power in described co-frequency cell to be greater than zero, i.e. effectively channel impulse response and the channel code of subchannel, calculates the channel information vector of described effective subchannel; And

Utilize the channel information vector of the each activation channel in described Serving cell and the channel information vector of described effective subchannel, calculate the generation vector for generating the parameter relevant with channel information with the modulation intelligence of useful signal that receives signal, and utilize described generation vector to carry out joint-detection.

2. the associated detecting method for communication equipment according to claim 1, is characterized in that, becomes the processing of two sub-channels to comprise the each activation channel distribution in described co-frequency cell:

According to relation between the frame timing of described co-frequency cell and the frame timing of described Serving cell, the described each activation channel distribution in described co-frequency cell is become to front terminal channel and rear terminal channel;

Channel impulse response to described front terminal channel and described rear terminal channel is expanded.

3. the associated detecting method for communication equipment according to claim 1 and 2, is characterized in that, the processing of calculating the channel information vector of described effective subchannel comprises:

Calculate the window power of all subchannels of the described activation channel distribution from described co-frequency cell;

Delete window power and be not more than zero subchannel, i.e. invalid subchannel, and retain the subchannel that window power is greater than zero, i.e. effective subchannel;

The channel code of utilizing the channel impulse response of described effective subchannel and marking off the corresponding activation channel of described effective subchannel from it, calculates the channel information vector of described effective subchannel.

4. the associated detecting method for communication equipment according to claim 3, is characterized in that, described associated detecting method is for TDS-CDMA system.

5. the associated detecting method for communication equipment according to claim 4, is characterized in that, supposes that described Serving cell is the 1st co-frequency cell, from the frame constant time lag τ with respect to described Serving cell _ii co-frequency cell in k the channel impulse response of front-end and back-end subchannel that activates channel distribution be respectively

with

Wherein, Eindx=min (16,17-τ _i%16), K represents the channel number in described i co-frequency cell, and % represents complementation,

with represent respectively from described i co-frequency cell k channel impulse response that activates the front-end and back-end subchannel that channel distribution goes out.

6. the associated detecting method for communication equipment according to claim 5, is characterized in that, for the m sub-channels in described i co-frequency cell, calculates the channel information vector of described m sub-channels according to following equation:

wherein, V _{i, m}represent the channel information vector of described m sub-channels,

represent the channel impulse response of described m sub-channels,

represent the channel code of described m sub-channels.

7. the associated detecting method for communication equipment according to claim 3, is characterized in that, also comprises:

Symbol offset according to described effective subchannel with respect to described Serving cell, recombinates to joint detection results.

8. for a joint-detection device for communication equipment, it is characterized in that, comprising:

Channel division unit, is configured to the frame timing according to each co-frequency cell of Serving cell, and the each activation channel distribution in described co-frequency cell is become to two sub-channels;

Vector calculation unit, the subchannel that is configured to utilize the window power in described co-frequency cell to be greater than zero, i.e. effectively channel impulse response and the channel code of subchannel, calculates the channel information vector of described effective subchannel; And

Joint-detection unit, be configured to utilize the channel information vector of the each activation channel in described Serving cell and the channel information vector of described effective subchannel, calculate the generation vector for generating the parameter relevant with channel information with the modulation intelligence of useful signal that receives signal, and utilize described generation vector to carry out joint-detection.

9. the joint-detection device for communication equipment according to claim 8, is characterized in that, described Channel division unit comprises:

Cut apart performance element, be configured to, according to relation between the frame timing of described co-frequency cell and the frame timing of described Serving cell, the described activation channel distribution in described co-frequency cell be become to front terminal channel and rear terminal channel;

Channel expansion unit, is configured to the channel impulse response of described front terminal channel and described rear terminal channel to expand.

10. the joint-detection device for communication equipment according to claim 8 or claim 9, is characterized in that, described vector calculation unit comprises:

Power acquiring unit, is configured to the window power of all subchannels that calculate described activation channel distribution from described co-frequency cell;

Channel bank, is configured to delete window power and is not more than zero subchannel, i.e. invalid subchannel, and retain the subchannel that window power is greater than zero, i.e. effective subchannel; And

Calculation execution unit, is configured to the channel code utilizing the channel impulse response of described effective subchannel and mark off the corresponding activation channel of described effective subchannel from it, calculates the channel information vector of described effective subchannel.

The 11. joint-detection devices for communication equipment according to claim 10, is characterized in that, described joint-detection device is for TDS-CDMA system.

The 12. joint-detection devices for communication equipment according to claim 11, is characterized in that, suppose that described Serving cell is the 1st co-frequency cell, from the frame constant time lag τ with respect to described Serving cell _ii co-frequency cell in k channel impulse response that activates the front-end and back-end subchannel that separates of channel be respectively

with

Wherein, Eindx=min (16,17-τ _i%16), K represents the channel number in described i co-frequency cell, and % represents complementation,

with represent respectively from described i co-frequency cell k channel impulse response that activates the front-end and back-end subchannel that channel distribution goes out.

The 13. joint-detection devices for communication equipment according to claim 12, it is characterized in that, for the m sub-channels in described i co-frequency cell, described vector calculation unit is calculated the channel information vector of described m sub-channels according to following equation:

wherein, V _{i, m}represent the channel information vector of described m sub-channels,

represent the channel impulse response of described m sub-channels, represent the channel code of described m sub-channels.

The 14. joint-detection devices for communication equipment according to claim 10, is characterized in that, also comprise:

Result recomposition unit, is configured to the symbol offset with respect to described Serving cell according to described effective subchannel, and joint detection results is recombinated.

15. 1 kinds of communication equipments, comprise the joint-detection device described in any one according to Claim 8 to 14.

Images