CN102739577B - Device and method for signal processing - Google Patents
Device and method for signal processing Download PDFInfo
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- CN102739577B CN102739577B CN201110081646.3A CN201110081646A CN102739577B CN 102739577 B CN102739577 B CN 102739577B CN 201110081646 A CN201110081646 A CN 201110081646A CN 102739577 B CN102739577 B CN 102739577B
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Abstract
Disclosed are a device and a method for signal processing. The signal processing method comprises a first step of receiving signals from a plurality of channels via a signal processing device, wherein the signals include a time slot which includes a midamble, a first data section and a second data section; a second step of using a first equation and a second equation to calculate a first data of the first data section and a second data of the second data section via the signal processing device according to midamble channel impulse response, first data section signals and second data section signals of the midamble; and a third step of outputting the first data and the second data via the signal processing device to obtain a data block. With the device and the method for signal processing provided by the invention, efficiency of an equalizer of a signal system under the change of channel environment can be increased, and thus error rate and bit error rate of the system under the change of channel environment can be improved.
Description
Technical field
The present invention about a kind of signal processing apparatus and method, especially, about the signal processing apparatus under high-speed mobile and method.
Background technology
TD SDMA (Time Division-Synchronous Code Division MultipleAccess, TD-SCDMA) be third generation partner program (3rd Generation Partnership Project, 3GPP) be chosen as G mobile communication (3rd Generation, 3G) be applicable to the standard of time multiplex (TimeDivision Duplex, TDD).
The advantage of TD SDMA is, signal processing apparatus easily utilizes joint-detection (jointdetection, JD) technology is to remove multiuser interference (the multiple accessinterference in Received signal strength, and intersymbol interference (inter symbol interference MAI), ISI), these all strengthens the usefulness of communication system.And associated detection technique mainly utilizes time slot (timeslot, TS) intermediate code (midamble in, MA) part, estimate channel impulse response (the channel impulse response of time slot, CIR), and by the channel impulse response of estimation be used for data field equilibrium (data field equalization).
But when signal processing apparatus high-speed mobile, the situation change of channel fast, will be no longer consistent with the channel impulse response in time slot.That is, the channel impulse response estimated by intermediate code, larger error will be produced with real channel impulse response, thus the usefulness of equalizer (equalizer) is reduced, namely reduce the usefulness of equalizer of signal system under channel circumstance change, thus the error rate of system under channel circumstance change and bit error rate are deteriorated.
Summary of the invention
In view of this, the invention provides a kind of signal processing method and device.
The invention provides a kind of signal processing method, comprise: via signal processing apparatus, receive the signal from multiple channel, above-mentioned signal comprises time slot, above-mentioned time slot comprises intermediate code, the first data segments and one second data segments, and above-mentioned first data segments and above-mentioned second data segments have the first data segments signal and the second data segments signal respectively; Via said signal processing device, obtain the intermediate code channel impulse response of above-mentioned intermediate code; Via said signal processing device, according to above-mentioned intermediate code channel impulse response, above-mentioned first data segments signal and first party formula, obtain the first ephemeral data of above-mentioned first data segments; Via said signal processing device, according to above-mentioned first ephemeral data, above-mentioned first data segments signal and second party formula, obtain the first channel impulse response of above-mentioned first data segments; Via said signal processing device, according to above-mentioned first channel impulse response, above-mentioned first data segments signal and above-mentioned first party formula, obtain the first data of above-mentioned first data segments; Via said signal processing device, according to above-mentioned first channel impulse response, above-mentioned second data segments signal and above-mentioned first party formula, obtain the second ephemeral data of above-mentioned second data segments; Via said signal processing device, according to above-mentioned second ephemeral data, above-mentioned second data segments signal and above-mentioned second party formula, obtain the second channel impulse response of above-mentioned second data segments; Via said signal processing device, according to above-mentioned second channel impulse response, above-mentioned second data segments signal and above-mentioned first party formula, obtain the second data of above-mentioned second data segments; And via said signal processing device, export above-mentioned first data and above-mentioned second data, in order to obtain block.
In addition, the invention provides a kind of signal processing method, comprise: via a signal processing apparatus, receive the signal from multiple channel, above-mentioned signal comprises time slot, above-mentioned time slot comprises the first data segments, the second data segments, and above-mentioned first data segments and above-mentioned second data segments have the first data segments signal and the second data segments signal respectively; Via said signal processing device, obtain reference channel impulse response; Via said signal processing device, according to above-mentioned reference channel impulse response, above-mentioned first data segments signal and first party formula, obtain the first ephemeral data of above-mentioned first data segments; Via said signal processing device, according to above-mentioned first ephemeral data, above-mentioned first data segments signal and second party formula, obtain the first channel impulse response of above-mentioned first data segments; Via said signal processing device, according to above-mentioned first channel impulse response, above-mentioned first data segments signal and above-mentioned first party formula, obtain one first data of above-mentioned first data segments; Via said signal processing device, according to above-mentioned first channel impulse response, above-mentioned second data segments signal and above-mentioned first party formula, obtain the second ephemeral data of above-mentioned second data segments; Via said signal processing device, according to above-mentioned second ephemeral data, above-mentioned second data segments signal and above-mentioned second party formula, obtain the second channel impulse response of above-mentioned second data segments; Via said signal processing device, according to above-mentioned second channel impulse response, above-mentioned second data segments signal and above-mentioned first party formula, obtain the second data of above-mentioned second data segments; And via said signal processing device, export above-mentioned first data and above-mentioned second data, in order to obtain a block, wherein above-mentioned reference channel impulse response is the 3rd channel impulse response of one the 3rd data segments being different from above-mentioned first data segments and above-mentioned second data segments in above-mentioned time slot.
In addition, the invention provides a kind of signal processing apparatus, comprising: antenna; Wireless receiving module, is coupled to above-mentioned antenna; Joint-detection module, is coupled to above-mentioned wireless receiving module; Channel impulse response estimation module, is coupled to above-mentioned joint-detection module; And channel code decoder, be coupled to above-mentioned joint-detection module, wherein: above-mentioned antenna and above-mentioned wireless receiving module receive the signal from multiple channel, above-mentioned signal comprises time slot, above-mentioned time slot comprises intermediate code, the first data segments and the second data segments, and above-mentioned first data segments and above-mentioned second data segments have the first data segments signal and the second data segments signal respectively; Above-mentioned channel impulse response estimation module obtains the intermediate code channel impulse response of above-mentioned intermediate code; Above-mentioned joint-detection module, according to above-mentioned intermediate code channel impulse response, above-mentioned first data segments signal and first party formula, obtains the first ephemeral data of above-mentioned first data segments; Above-mentioned channel impulse response estimation module, according to above-mentioned first ephemeral data, above-mentioned first data segments signal and second party formula, obtains the first channel impulse response of above-mentioned first data segments; Above-mentioned joint-detection module, according to above-mentioned first channel impulse response, above-mentioned first data segments signal and above-mentioned first party formula, obtains the first data of above-mentioned first data segments; Above-mentioned joint-detection module, according to above-mentioned first channel impulse response, above-mentioned second data segments signal and above-mentioned first party formula, obtains the second ephemeral data of above-mentioned second data segments; Above-mentioned channel impulse response estimation module, according to above-mentioned second ephemeral data, above-mentioned second data segments signal and above-mentioned second party formula, obtains the second channel impulse response of above-mentioned second data segments; Above-mentioned joint-detection module, according to above-mentioned second channel impulse response, above-mentioned second data segments signal and above-mentioned first party formula, obtains the second data of above-mentioned second data segments; And above-mentioned joint-detection module exports above-mentioned first data and above-mentioned second data extremely above-mentioned channel code decoder, to obtain a block.
Signal processing method provided by the invention and device, can improve the usefulness of equalizer of signal system under channel circumstance change, thus improve the error rate of system under channel circumstance change and bit error rate.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the Received signal strength model of display according to one embodiment of the invention;
Fig. 2 is the structure chart of the signal of display according to one embodiment of the invention;
Fig. 3 is the schematic diagram of the signal processing apparatus of display according to one embodiment of the invention;
Fig. 4 is the time slot schematic diagram of display according to one embodiment of the invention;
Fig. 5 is the time slot schematic diagram of display according to one embodiment of the invention;
Fig. 6 is the flow chart of the signal processing method of display according to one embodiment of the invention.
Embodiment
Fig. 1 is the schematic diagram of the Received signal strength model 100 of display according to one embodiment of the invention.As shown in the figure, Received signal strength model 100, comprising: from the data d in the data chips (chip) of the time slot (time slot) of the signal of multiple different user
(1), d
(2)..., d
(k)(k is positive integer); Multiple orthogonal variable frequency extension factor code (Orthogonal Variable Spreading Factor code, OVSF code) c
(1), c
(2)..., c
(k); Multiple channel impulse response h
(1), h
(2)..., h
(k); Adder 102,104, noise n, signal R and signal processing apparatus 106, wherein above-mentioned data d
(1), d
(2)..., d
(k)if respectively there is N number of serial data, can be write as the vector of N × 1 separately, such as:
first, by multiple data d
(1), d
(2)..., d
(k)spread spectrum, and multiple orthogonal variable frequency extension factor code c
(1), c
(2)..., c
(k)carry out convolution (amassing also known as Kronecher), then respectively through multiple channel impulse response h
(1), h
(2)..., h
(k).Adder 102 represents the data that receive for form from different channels superposition.Should contain noisy composition in the data that adder 104 representatives receive, noise n is here a white noise (white noise), and the noise power represented in each frequency range is all identical, and its variance (variance) can use σ
2represent.
Fig. 2 is the structure chart of the signal R of display according to one embodiment of the invention.As shown in the figure, framing 1 and frame 2 can be divided in signal R inside.Frame 1 more can be subdivided into subframe 1 and subframe 2.Subframe 1 can more be subdivided into time slot 0, descending synchronous signal channel DwPCH, propagation delay protection GP, uplink synchronous channel UpPCH, time slot 1, time slot 2 ..., time slot 6.Time slot 0, time slot 1, time slot 2 ..., time slot 6 more can be subdivided into intermediate code MA, multiple data chips, such as chip chip1, chip2, chip3, chip4 respectively.Much more no longer one of ordinary skill in the art can understand this figure and be only the use that signal structure is described, not the condition of restricting signal structure, to explain at this.
Fig. 3 is the schematic diagram of the signal processing apparatus 300 of display according to one embodiment of the invention.As shown in the figure, signal processing apparatus 300 comprises: antenna 302, wireless receiving module 304, joint-detection module (JD-segment) 306, channel impulse response estimation module (CE-segment) 308, channel code decoder (channel-code decoder) 310.Wireless receiving module 304 is electrically connected antenna 302, and joint-detection module 306 is electrically connected wireless receiving module 304, channel impulse response estimation module 308, and channel code decoder 310.Wherein, antenna 302 can be the antenna of planar inverted F-shape antenna (planar inverted F antenna), unipole antenna (monopole antenna), loop antenna (loop antenna), helical antenna (helical antenna) and antenna component (chip antenna) or other kinds; Wireless receiving module 304 can comprise the necessary assembly of various Received signal strength, such as: the assembly of radio circuit, analog-digital converter (ADC), filter (filter) and other Received signal strength.Joint-detection module 306 and channel impulse response estimation module 308, respectively in order to perform joint-detection and channel impulse response estimation, will elaborate afterwards.Channel code decoder 310 receives the data that joint-detection module 306 and channel impulse response estimation module 308 are calculated, then obtains required block (data block) by decoding.
In an embodiment of the present invention, the antenna 302 of signal processing apparatus 300 and wireless receiving module 304 receive the signal R from multiple channel, and its structure as shown in Figure 2.Fig. 4 is time slot 400 schematic diagram of display according to one embodiment of the invention, comprises intermediate code MA and data segments data_seg1, data_seg2.Data segments data_seg1 can comprise multiple chip, or only has a chip, such as: the first chip.Similarly, data segments data_seg2 can comprise multiple chip, or only has a chip, such as: the second chip.Wherein data segments data_seg1 is adjacent to data segments data_seg2 and intermediate code MA.Data segments data_seg1, data_seg2 have data segments signal r_data_seg1, r_data_seg2 respectively.Data segments signal r_data_seg1 can comprise the multiple chip signal corresponding to multiple chip, or only has the chip signal corresponding to a chip, such as: corresponding to the first chip signal of the first chip.Similarly, data segments signal r_data_seg2 can comprise the multiple chip signal corresponding to multiple chip, or only has the chip signal corresponding to a chip, such as: corresponding to the second chip signal of the second chip.Get back to Fig. 3, first, channel impulse response estimation module 308 obtains the intermediate code channel impulse response h_ma of intermediate code MA, and joint-detection module 306 is according to intermediate code channel impulse response h_ma, data segments signal r_data_seg1 and equation 1, data segments data_seg1 performs joint-detection, obtain ephemeral data d1_temp, its computational process as shown in equation 1:
Equation 1:
D'=(T
ht+ σ
2i)
-1t
hr, wherein:
Parameter d ' data of representative for being solved by matrix T;
Matrix T represents the matrix that orthogonal variable frequency extension factor code and channel impulse response carry out convolution and obtain;
Subscript H represents associate matrix;
Subscript-1 represents inverse matrix;
Matrix I represents unit square formation;
Parameter σ
2represent noise energy;
Vector r representative data segment signals.
Obtain in the process of ephemeral data d1_temp in joint-detection module 306, the matrix T in equation 1 is first gone out with intermediate code channel impulse response h_ma and orthogonal variable frequency extension factor code convolutional calculation, substitute into the parameters such as data segments signal r_data_seg1, noise energy again, the parameter d calculated ' be ephemeral data d1_temp.Noise energy can draw with LMSE method (MMSE) estimation.
Then, after obtaining ephemeral data d1_temp, channel impulse response estimation module 308 calculates the channel impulse response h1 of data segments data_seg1, as described in equation 2 according to ephemeral data d1_temp, data segments signal r_data_seg1 and equation 2.
Equation 2:
H=(D
hd)
-1d
hr, wherein
Matrix h represents the channel impulse response for solving;
Matrix D representative carries out the result after convolution by data or ephemeral data and orthogonal variable frequency extension factor code;
Vector r representative data segment signals.
Obtain in the process of channel impulse response h1 of data segments data_seg1 in channel impulse response estimation module 308, the matrix D in equation 2 is first gone out with ephemeral data d1_temp and orthogonal variable frequency extension factor code convolutional calculation, substitute into data segments signal r_data_seg1 again, the matrix h calculated is channel impulse response h1.
After calculating channel impulse response h1, joint-detection module 306 according to channel impulse response h1, data segments signal r_data_seg1 and equation 1, calculates data d1 again.Obtain in the process of data d1 in joint-detection module 306, the matrix T in equation 1 is first gone out with channel impulse response h1 and orthogonal variable frequency extension factor code convolutional calculation, substitute into the parameters such as data segments signal r_data_seg1, noise energy again, the parameter d calculated ' be data d1.
Next, joint-detection module 306, according to channel impulse response h1, data segments signal r_data_seg2 and first party formula, data segments data_seg2 performs joint-detection, obtains ephemeral data d2_temp.Obtain in the process of ephemeral data d2_temp in joint-detection module 306, the matrix T in equation 1 is first gone out with channel impulse response h1 and orthogonal variable frequency extension factor code convolutional calculation, substitute into the parameters such as data segments signal r_data_seg2, noise energy again, the parameter d calculated ' be ephemeral data d2_temp.
After obtaining ephemeral data d2_temp, channel impulse response estimation module 308 calculates the channel impulse response h2 of data segments data_seg2 according to ephemeral data d2_temp, data segments signal r_data_seg2 and equation 2.Obtain in the process of channel impulse response h2 of data segments data_seg2 in channel impulse response estimation module 308, the matrix D in equation 2 is first gone out with ephemeral data d2_temp and orthogonal variable frequency extension factor code convolutional calculation, substitute into data segments signal r_data_seg2 again, the matrix h calculated is channel impulse response h2.
After calculating channel impulse response h2, joint-detection module 306 according to channel impulse response h2, data segments signal r_data_seg2 and equation 1, calculates data d2 again.Obtain in the process of data d2 in joint-detection module 306, the matrix T in equation 1 is first gone out with channel impulse response h2 and orthogonal variable frequency extension factor code convolutional calculation, substitute into the parameters such as data segments signal r_data_seg2, noise energy again, the parameter d calculated ' be data d2.
Finally, joint-detection module 306 exports data d1, d2 to channel code decoder 310, to obtain a block.
Fig. 5 is time slot 500 schematic diagram of display according to one embodiment of the invention.With Fig. 4 uniquely unlike, intermediate code channel impulse response h_ma at the beginning acquired by channel response estimation block 308, can replace with the reference channel impulse response (such as: channel impulse response h3) obtained from any one data segments (such as: data segments data_seg3) in time slot 500.All the other computational processes are then identical.Data segments data_seg3 can comprise multiple chip, or only has a chip, such as: third yard sheet.It should be noted that the data segments data_seg3 in Fig. 5 is a data segments being different from data segments data_seg1, data_seg2, can be adjacent with data segments data_seg1, data_seg2.And data segments data_seg1, data_seg2 also can non-conterminously connect.
In sum, the parameter d in equation 1 ' can be ephemeral data d1_temp, d2_temp or data d1, d2; Matrix T represents the matrix that orthogonal variable frequency extension factor code and a channel impulse response carry out convolution and obtain, and above-mentioned channel impulse response can be intermediate code channel impulse response h_ma, reference channel impulse response or channel impulse response h1, h2; And vectorial r can be data segments signal r_data_seg1, r_data_seg2.In addition, the matrix h in equation 2 can be channel impulse response h1, h2; Matrix D representative carries out the result after convolution by an ephemeral data and orthogonal variable frequency extension factor code, and above-mentioned ephemeral data can be ephemeral data d1_temp, d2_temp; Vector r can be data segments signal r_data_seg1, r_data_seg2.
Fig. 6 is the flow chart 600 of the signal processing method of display according to one embodiment of the invention.First start, in step S601, via signal processing apparatus, receive the signal from multiple channel, signal comprises time slot, time slot comprises intermediate code, the first data segments and the second data segments, and the first data segments and the second data segments have the first data segments signal and the second data segments signal respectively.In step S602, via signal processing apparatus, obtain the intermediate code channel impulse response of intermediate code.In step S603, via signal processing apparatus, according to intermediate code channel impulse response, the first data segments signal and first party formula, obtain the first ephemeral data of the first data segments.In step S604, via signal processing apparatus, according to the first ephemeral data, the first data segments signal and second party formula, obtain the first channel impulse response of the first data segments.In step S605, via signal processing apparatus, according to the first channel impulse response, the first data segments signal and first party formula, obtain the first data of the first data segments.In step S606, via signal processing apparatus, according to the first channel impulse response, the second data segments signal and first party formula, obtain the second ephemeral data of the second data segments.In step S607, via signal processing apparatus, according to the second ephemeral data, the second data segments signal and second party formula, obtain the second channel impulse response of the second data segments.In step S608, via signal processing apparatus, according to second channel impulse response, the second data segments signal and first party formula, obtain the second data of the second data segments.Finally, in step S609, via signal processing apparatus, export the first data and the second data, in order to obtain block, flow process terminates.
In an alternative embodiment of the invention, the step S602 of Fig. 6 also can change into: via signal processing apparatus, obtains reference channel impulse response; And step S603 also can change into: via signal processing apparatus, according to reference channel impulse response, the first data segments signal and first party formula, obtain the first ephemeral data of the first data segments.The channel impulse response that reference channel impulse response can be obtained by any one data segments in time slot replaces, such as: the 3rd channel impulse response of the 3rd data segments.
Though the present invention discloses as above with preferred embodiment; so itself and be not used to limit scope of the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; when doing a little change and retouching, therefore protection scope of the present invention is when being as the criterion depending on the claims person of defining.
Claims (11)
1. a signal processing method, comprising:
Via signal processing apparatus, receive the signal from multiple channel, above-mentioned signal comprises time slot, above-mentioned time slot comprises intermediate code, the first data segments and one second data segments, and above-mentioned first data segments and above-mentioned second data segments have the first data segments signal and the second data segments signal respectively;
Via said signal processing device, obtain the intermediate code channel impulse response of above-mentioned intermediate code;
Via said signal processing device, according to above-mentioned intermediate code channel impulse response, above-mentioned first data segments signal and first party formula, obtain the first ephemeral data of above-mentioned first data segments;
Via said signal processing device, according to above-mentioned first ephemeral data, above-mentioned first data segments signal and second party formula, obtain the first channel impulse response of above-mentioned first data segments;
Via said signal processing device, according to above-mentioned first channel impulse response, above-mentioned first data segments signal and above-mentioned first party formula, obtain the first data of above-mentioned first data segments;
Via said signal processing device, according to above-mentioned first channel impulse response, above-mentioned second data segments signal and above-mentioned first party formula, obtain the second ephemeral data of above-mentioned second data segments;
Via said signal processing device, according to above-mentioned second ephemeral data, above-mentioned second data segments signal and above-mentioned second party formula, obtain the second channel impulse response of above-mentioned second data segments;
Via said signal processing device, according to above-mentioned second channel impulse response, above-mentioned second data segments signal and above-mentioned first party formula, obtain the second data of above-mentioned second data segments; And
Via said signal processing device, export above-mentioned first data and above-mentioned second data, in order to obtain block.
2. signal processing method as claimed in claim 1, it is characterized in that, above-mentioned first data segments is adjacent to above-mentioned intermediate code and above-mentioned second data segments.
3. signal processing method as claimed in claim 1, it is characterized in that, above-mentioned first party formula is:
d′＝(T
HT+σ
2I)
-1T
Hr，
Wherein:
Parameter d ' be above-mentioned first ephemeral data, above-mentioned first data, above-mentioned second ephemeral data, or above-mentioned second data;
Matrix T represents the matrix that orthogonal variable frequency extension factor code and a channel impulse response carry out convolution and obtain, and above-mentioned channel impulse response is above-mentioned intermediate code channel impulse response, above-mentioned first channel impulse response, or above-mentioned second channel impulse response;
Matrix I represents unit square formation;
Parameter σ
2represent noise energy; And
Vector r is above-mentioned first data segments signal or above-mentioned second data segments signal.
4. signal processing method as claimed in claim 1, it is characterized in that, above-mentioned second party formula is:
h＝(D
HD)
-1D
Hr
Wherein:
Matrix h is above-mentioned first channel impulse response or above-mentioned second channel impulse response;
Matrix D representative carries out the result after convolution by ephemeral data and orthogonal variable frequency extension factor code, and above-mentioned ephemeral data is above-mentioned first ephemeral data or above-mentioned second ephemeral data; And
Vector r is above-mentioned first data segments signal or above-mentioned second data segments signal.
5. a signal processing method, comprising:
Via a signal processing apparatus, receive the signal from multiple channel, above-mentioned signal comprises time slot, and above-mentioned time slot comprises the first data segments, the second data segments, and above-mentioned first data segments and above-mentioned second data segments have the first data segments signal and the second data segments signal respectively;
Via said signal processing device, obtain reference channel impulse response;
Via said signal processing device, according to above-mentioned reference channel impulse response, above-mentioned first data segments signal and first party formula, obtain the first ephemeral data of above-mentioned first data segments;
Via said signal processing device, according to above-mentioned first ephemeral data, above-mentioned first data segments signal and second party formula, obtain the first channel impulse response of above-mentioned first data segments;
Via said signal processing device, according to above-mentioned first channel impulse response, above-mentioned first data segments signal and above-mentioned first party formula, obtain one first data of above-mentioned first data segments;
Via said signal processing device, according to above-mentioned first channel impulse response, above-mentioned second data segments signal and above-mentioned first party formula, obtain the second ephemeral data of above-mentioned second data segments;
Via said signal processing device, according to above-mentioned second ephemeral data, above-mentioned second data segments signal and above-mentioned second party formula, obtain the second channel impulse response of above-mentioned second data segments;
Via said signal processing device, according to above-mentioned second channel impulse response, above-mentioned second data segments signal and above-mentioned first party formula, obtain the second data of above-mentioned second data segments; And
Via said signal processing device, export above-mentioned first data and above-mentioned second data, in order to obtain a block, wherein above-mentioned reference channel impulse response is the 3rd channel impulse response of the 3rd data segments being different from above-mentioned first data segments and above-mentioned second data segments in above-mentioned time slot.
6. signal processing method as claimed in claim 5, it is characterized in that, above-mentioned first party formula is:
d′＝(T
HT+σ
2I)
-1T
Hr，
Wherein:
Parameter d ' be above-mentioned first ephemeral data, above-mentioned first data, above-mentioned second ephemeral data, or above-mentioned second data;
Matrix T represents the matrix that orthogonal variable frequency extension factor code and a channel impulse response carry out convolution and obtain, and above-mentioned channel impulse response is above-mentioned reference channel impulse response, above-mentioned first channel impulse response, or above-mentioned second channel impulse response;
Matrix I represents unit square formation;
Parameter σ
2represent noise energy; And
Vector r is above-mentioned first data segments signal or above-mentioned second data segments signal.
7. signal processing method as claimed in claim 5, it is characterized in that, above-mentioned second party formula is:
h＝(D
HD)
-1D
Hr，
Wherein:
Matrix h is above-mentioned first channel impulse response or above-mentioned second channel impulse response;
Matrix D representative carries out the result after convolution by ephemeral data and orthogonal variable frequency extension factor code, and above-mentioned ephemeral data is above-mentioned first ephemeral data or above-mentioned second ephemeral data; And
Vector r is above-mentioned first data segments signal or above-mentioned second data segments signal.
8. a signal processing apparatus, comprising:
Antenna;
Wireless receiving module, is coupled to above-mentioned antenna;
Joint-detection module, is coupled to above-mentioned wireless receiving module;
Channel impulse response estimation module, is coupled to above-mentioned joint-detection module; And
Channel code decoder, is coupled to above-mentioned joint-detection module,
Wherein:
Above-mentioned antenna and above-mentioned wireless receiving module receive the signal from multiple channel, above-mentioned signal comprises time slot, above-mentioned time slot comprises intermediate code, the first data segments and the second data segments, and above-mentioned first data segments and above-mentioned second data segments have the first data segments signal and the second data segments signal respectively;
Above-mentioned channel impulse response estimation module obtains the intermediate code channel impulse response of above-mentioned intermediate code;
Above-mentioned joint-detection module, according to above-mentioned intermediate code channel impulse response, above-mentioned first data segments signal and first party formula, obtains the first ephemeral data of above-mentioned first data segments;
Above-mentioned channel impulse response estimation module, according to above-mentioned first ephemeral data, above-mentioned first data segments signal and second party formula, obtains the first channel impulse response of above-mentioned first data segments;
Above-mentioned joint-detection module, according to above-mentioned first channel impulse response, above-mentioned first data segments signal and above-mentioned first party formula, obtains the first data of above-mentioned first data segments;
Above-mentioned joint-detection module, according to above-mentioned first channel impulse response, above-mentioned second data segments signal and above-mentioned first party formula, obtains the second ephemeral data of above-mentioned second data segments;
Above-mentioned channel impulse response estimation module, according to above-mentioned second ephemeral data, above-mentioned second data segments signal and above-mentioned second party formula, obtains the second channel impulse response of above-mentioned second data segments;
Above-mentioned joint-detection module, according to above-mentioned second channel impulse response, above-mentioned second data segments signal and above-mentioned first party formula, obtains the second data of above-mentioned second data segments; And
Above-mentioned joint-detection module exports above-mentioned first data and above-mentioned second data extremely above-mentioned channel code decoder, to obtain a block.
9. signal processing apparatus as claimed in claim 8, wherein above-mentioned first data segments is adjacent to above-mentioned intermediate code and above-mentioned second data segments.
10. signal processing apparatus as claimed in claim 8, it is characterized in that, above-mentioned first party formula is:
d′＝(T
HT+σ
2I)
-1T
Hr，
Wherein:
Parameter d ' be above-mentioned first ephemeral data, above-mentioned first data, above-mentioned second ephemeral data, or above-mentioned second data;
Matrix T represents the matrix that orthogonal variable frequency extension factor code and a channel impulse response carry out convolution and obtain, and above-mentioned channel impulse response is above-mentioned intermediate code channel impulse response, above-mentioned first channel impulse response, or above-mentioned second channel impulse response;
Matrix I represents unit square formation;
Parameter σ
2represent noise energy; And
Vector r is above-mentioned first data segments signal or above-mentioned second data segments signal.
11. signal processing apparatus as claimed in claim 8, it is characterized in that, above-mentioned second party formula is:
h＝(D
HD)
-1D
Hr
Wherein:
Matrix h is above-mentioned first channel impulse response or above-mentioned second channel impulse response;
Matrix D representative carries out the result after convolution by ephemeral data and orthogonal variable frequency extension factor code, and above-mentioned ephemeral data is above-mentioned first ephemeral data or above-mentioned second ephemeral data; And
Vector r is above-mentioned first data segments signal or above-mentioned second data segments signal.
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|---|---|---|---|
| CN201110081646.3A CN102739577B (en) | 2011-04-01 | 2011-04-01 | Device and method for signal processing |
| TW100122876A TWI440318B (en) | 2011-04-01 | 2011-06-29 | Apparatuses and method for processing signals |
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|---|---|---|---|
| CN201110081646.3A CN102739577B (en) | 2011-04-01 | 2011-04-01 | Device and method for signal processing |
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| CN102739577A CN102739577A (en) | 2012-10-17 |
| CN102739577B true CN102739577B (en) | 2015-07-15 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1708401A2 (en) * | 1999-08-10 | 2006-10-04 | Nanotron Technologies GmbH | Transmission method with frequency and time spread at transmitter level |
| CN101567870A (en) * | 2008-04-22 | 2009-10-28 | 普天信息技术研究院有限公司 | Detection method and device of home position, peak position and final position of channel response |
| CN101632275A (en) * | 2007-03-09 | 2010-01-20 | 高通股份有限公司 | In 3GPP TD-CDMA system, use and non-ly lead the improved channel equalization that sign indicating number distributes in public |
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| US8532019B2 (en) * | 2004-10-06 | 2013-09-10 | Broadcom Corporation | Method and system for implementing a single weight (SW) single channel (SC) MIMO system |
| RU2458470C2 (en) * | 2007-11-02 | 2012-08-10 | Нокиа Сименс Нетуоркс Ой | Pilot signal allocation method and apparatus |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1708401A2 (en) * | 1999-08-10 | 2006-10-04 | Nanotron Technologies GmbH | Transmission method with frequency and time spread at transmitter level |
| CN101632275A (en) * | 2007-03-09 | 2010-01-20 | 高通股份有限公司 | In 3GPP TD-CDMA system, use and non-ly lead the improved channel equalization that sign indicating number distributes in public |
| CN101567870A (en) * | 2008-04-22 | 2009-10-28 | 普天信息技术研究院有限公司 | Detection method and device of home position, peak position and final position of channel response |
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| TW201242269A (en) | 2012-10-16 |
| CN102739577A (en) | 2012-10-17 |
| TWI440318B (en) | 2014-06-01 |
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