CN101288233A - Method and apparatus for automatically correcting receiver oscillator frequency - Google Patents

Abstract

A method and apparatus for automatically correcting the frequency of a local oscillator of a receiver. A primary common pilot channel (CPICH) code sequence is generated by a CPICH code generator based on a reference cell identification signal and a frame start signal. The received despread CPICH code sequence is used to generate an estimated frequency error signal. A control voltage generator based on the estimated frequency error signal generates a control voltage signal. The CPICH code generator generates the CPICH code sequence based on signals received from a high speed downlink packet access (HSDPA) serving cell when HSDPA is active, or a timing reference cell when HSDPA is not active. The present invention achieves full maximum ratio combining gain when space-time transmit diversity (STTD) is used, even without receiving a transmit diversity indication.

Description

The method of automatically correcting receiver oscillator frequency and device

Technical field

The present invention is relevant with wireless communication system.More particularly, the present invention uses the method and apparatus of area oscillation device (LO) frequency relevant with a kind of in wireless receiver from dynamic(al) correction.

Background technology

In a kind of traditional wireless communication system, it comprises a receiver and a transmitter, and this receiver utilizes a kind of automatic frequency correction (AFC) algorithm, carries out the correction of carrier frequency shift, and carries out the timing offset sampling for transmitter.This generally is real the work by using pilot signal.Yet, by introduce the mode of transmission diversity, high-speed downstream link packet access (HSPDA) and grand diversity (macro-diversity) in wireless communication standard, this automatic frequency correction algorithm must be observed the severeer requirement of being introduced by this high-speed downstream link packet access service.

Higher area size is used in the service of high-speed downstream link packet access, to produce the higher data transfer rate.Yet higher area size is responsive more for frequency errors.Therefore, high-speed downstream link packet access needs more strong automatic frequency correction algorithm.Be based upon in these challenges, the automatic frequency correction algorithm may be operated in a kind of grand diversity environment, and wherein this receiver is handled the data that come from most cell elements simultaneously.For example, in third generation partner program (3GPP) frequency division duplexing (FDD) system, this receiver can receive the data that come from six neighbor cell simultaneously.In this case, existence is from the different pilot signals of each cell element.

This prior art does not need to make this automatic frequency correction algorithm to have the ability that high-speed downstream links packet access and handles most cell elements.In general, this prior art is not handled transmission diversity (timing between a wireless transmission receiving element (WTRU) and a base station is synchronous) during the initial lock of automatic frequency correction.This transmission diversity processing is real work the after confirming by the transmission diversity existence that blazons channel only.Therefore, this transmission diversity processing does not cause contribution for the automatic frequency correction algorithm between the initial accumulative phase.This increases the gathering time, and reduces the possibility of assembling.

This prior art has the loose requirement that sets as by transmission frequency mistake standard.This similarly is that the receiver of bi Phase Shift Keying (BPSK) or quadravalence phase shift keying less area sizes such as (QPSK) is enough for having.Yet the upper zone being equal to or greater than 16 quadravalence phase shift keyings (QPSK) just needs severeer requirement.For example, this third generation partner program frequency division duplexing (FDD) standard need be less than 0.1/1000000th frequency errors in the automatic frequency correction algorithm.This high-speed downstream link packet access has tangible degradation phenomenon when the frequency errors that surpasses 0.05/1000000th.This require to force this automatic frequency correction algorithm must utilize transmission diversity and grand transmission efficiently, and is not need or be left in the basket in this prior art.

Summary of the invention

The present invention and a kind of utilization produce the mode of a voltage-controlled oscillator (VCO) control voltage signal, and be relevant from the method and apparatus of dynamic(al) correction oscillator frequency in analog radio.According to automatic frequency correction algorithm of the present invention, it utilizes a kind of common pilot channel (CPICH) as reference signal, measures with the frequency errors of carrying out in this wireless transmission receiving system.

Main common pilot channel sign indicating number sequence is produced with reference to a cell element identification signal and a frame start signal according to one by a common pilot channel sign indicating number generator.The de-spread loop common pilot channel sign indicating number sequence of this reception then is used for producing an estimated frequency rub-out signal.This control voltage signal is then produced according to this estimated frequency rub-out signal by a control voltage generator.This common pilot channel sign indicating number generator then according to from an automatic frequency correction with reference to the signal that cell element received, produce this common pilot channel sign indicating number sequence.When the service of high-speed downstream link packet access started, this automatic frequency correction can be a kind of high-speed downstream link packet access service cell element with reference to cell element, or when the service of high-speed downstream link packet access does not start, is a frequency reference cell element.Substitute, this automatic frequency correction algorithm also can use a kind of fixed with reference to cell element, and need not any switching of being carried out between this common pilot channel reference code corresponding to this difference cell element.Even do not receive transmission diversity indication, the present invention is when utilizing space time transmission diversity (STTD), and still can reaching completely, maximum rate gains in conjunction with (MRC).It can be used by any Alamouti calculation according to the transmission diversity structure.

Description of drawings

Utilize follow-up description,, can obtain details of the present invention is understood with example and in conjunction with the mode of following icon for a preferred embodiment, wherein:

Fig. 1 is the block diagram of the simplification of a receiver, and this receiver one of comprises according to the present invention automatic frequency correction (AFC) unit and control voltage generator;

Fig. 2 is the block icon of the receiver of Fig. 1, and it shows the configuration of this automatic frequency correction (AFC) unit and control voltage generator in detail;

Fig. 3 is the block icon of Fig. 1 receiver automatic frequency correction (AFC) sub-cell; And

Fig. 4 is the loop filter icon in Fig. 1 receiver automatic frequency correction (AFC) unit.

Embodiment

After this, this term " the wireless transmission receiving system " comprise but be not restricted to user's equipment, mobile radio station, fixed or portable subscriber unit, calling set, or any device form with operational capacity in wireless environment.

Feature of the present invention can be integrated among the integrated circuit (IC), or is configured among the circuit with most interconnecting assemblies.

Fig. 1 is the block diagram of the simplification of a receiver 100, according to the present invention, this receiver 100 comprises and (for example has an analog radio 102 that is subjected to voltage control temperature compensating crystal oscillator (TCXO) 113, an analog-digital converter (ADC) 104, a filter 106, a kind of root raised cosine (RRC) filter), an automatic frequency correction unit 108 and one control voltage generator 110, it controls the voltage of this temperature compensating crystal oscillator (TCXO) 113.Received RF (RF) signal 101 that this analog radio 102 is handled by the antenna (not shown), utilization produces a fundamental frequency signal 103 with this received RF signal 101 and the mode of utilizing this temperature compensating crystal oscillator (TCXO) 113 signals that produce to mix.103 of this fundamental frequency signals are converted to a digital signal 105 by this analog-digital converter (ADC) 104.This digital signal 105 is preferably a kind of signal that utilizes 2 multiple proportions examples to be sampled, and is input to this filter 106 (carrying out pulse shaping), then exports this filtered digital signal 107 to this automatic frequency correction unit 108.It should be noted that this 2 sampling ratio is a kind of example, it can utilize any sampling ratio to carry out real work.This automatic frequency correction unit 108 produces an estimated frequency rub-out signal 109.This estimated frequency rub-out signal 109 is converted to a kind of temperature compensating crystal oscillator (TCXO) control voltage signal 111 then by this control voltage generator 110.

Temperature compensating crystal oscillator 113 frequencies in this analog radio 102 then determine according to this temperature compensating crystal oscillator control voltage signal 111.These desirable temperature compensating crystal oscillator 113 frequencies are that direct ratio is this temperature compensating crystal oscillator control voltage signal 111, and it can be expressed as

f _TCXO=λ V _ContEquation (1)

Wherein λ is the temperature compensating crystal oscillator control slope of curve that is determined by the specified temp compensated crystal oscillator that is used, f _TCXOBe the temperature compensating crystal oscillator frequency, and V _ContControl voltage for this temperature compensating crystal oscillator.

In general, the frequency difference in universal terrestrial radio ground access (UTRA) frequency division duplexing (FDD) system between transmitter and this receiver area oscillation device (LOs), maximum can arrive ± hundred very much 3.This is approximately the frequency errors of 6 kilo hertzs (kHz) during near 2 megahertzes (GHz) in carrier frequency.

According to the present invention, the automatic frequency correction algorithm is to set up according to the basis of continuous phase estimation difference.This automatic frequency correction algorithm can be done when the different transmission rate relevant with system requirements in fact.For example, this automatic frequency correction algorithm is can be in three kinds of different modes real does: fast, at a slow speed, freeze.In quick mode, this automatic frequency correction algorithm upgrades this frequency errors quickly and estimates compared with in slow speed mode.In freezing mode, this automatic frequency correction algorithm keeps last frequency errors to estimate, finishes (in other words, this frequency errors is estimated to keep between freezing period identical) up to freezing mode.Freezing mode can be used for compact model or other special situation.

In third generation partner program frequency division duplexing (FDD) the 5th version, support grand diversity.Therefore, in this active cell inventory, the wireless transmission receiving element can receive and separate the signal of modulation from six different cell elements at most.According to the present invention, can utilize the mode of simplification to support grand diversity to handle.

In the receiver 100 of Fig. 1, this automatic frequency correction unit 108 locates only to handle a cell element at any given time.This cell element is not a kind of high-speed downstream link packet access service cell element, is exactly a kind of frequency reference cell element.Yet any cell element algorithm thus utilizes, and need not carry out the correction of signal processing flow.This high-speed downstream link packet access service cell element is the cell element of a kind of transmitting high speed packet data to this wireless transmission receiving element, and this frequency reference cell element then is that a kind of wireless transmission receiving element that makes receives the cell element that all similarly are other service such as audio communication.These cell elements can be identical cell element or different cell elements.

If high-speed downstream link packet access is a starting state, just the signal that comes from this high-speed downstream link packet access service cell element is only handled in this automatic frequency correction unit 108.This means that this frequency will to link packet access service cell element synchronous with this high-speed downstream.If high-speed downstream link packet access does not start, this automatic frequency correction unit 108 so is just only handle the signal that comes from this frequency reference cell element.This automatic frequency correction with reference to cell element (in other words, be not that high-speed downstream link packet access service cell element is exactly the frequency reference cell element) be merely able to control voltage signal 111 at the temperature compensating crystal oscillator that is utilizing this control voltage cell element 110 to be exported, the temperature compensating crystal oscillator 113 that upgrades this analog radio 102 by after, and before the new renewal of beginning is handled, change.

Preferably, this automatic frequency correction unit 108 uses a kind of main common pilot channel as reference channel, carries out the measurement of carrier frequency mistake in this received signal.It should be noted, can use the channel form of any transmission known array to transmitter and receiver.The form that this common pilot channel can utilize space time transmission diversity (STTD) to open or close is transmitted.Though this automatic frequency correction unit 108 utilizes the transmission diversity in this common pilot channel, it does not need this transmission diversity indication.

Space time transmission diversity (STTD) is a kind of practical application of Alamouti transmission diversity method.This Alamouti transmission diversity receives an acclaim very much, handles because it has in this receiver very simply.Yet there is the flood tide frequency shift (FS) in this processing between adjacent symbols, or this transmission diversity information can't be used when unknown.Automatic frequency correction algorithm according to the present invention need not the following of transmission diversity indication, and also can obtaining completely, space time transmission diversity (STTD) structure maximum rate gains in conjunction with (MRC).This is to handle and abandon first of each frame by quadruple to obtain with the mode of last symbol.It is a kind ofly to produce the processing mode that a phase error is estimated from four continuously common pilot channel symbols that quadruple is handled.

Fig. 2 is the receiver 100 block icons of Fig. 1, and it shows the details of this automatic frequency correction unit 108 and this control voltage generator 110.According to the present invention, this automatic frequency correction unit 108 comprises an automatic frequency correction sub-cell 201, and it comprises a common pilot channel sign indicating number generator 202, a sliding window correlator 204, a phase vectors generator 206 and a phase vectors colligator 208.This automatic frequency correction unit 108 comprises a multipath colligator 210, a phase error estimator 212, an averaging unit 214 and a loop filter 216 in addition.

In this automatic frequency correction unit 108, this automatic frequency correction algorithm is real continuously the work after finishing the initial cell search.One is input to this common pilot channel sign indicating number generator 202 with reference to a cell element identification signal 252 (in other words, the high-speed downstream link packet access service cell element or the cell element identification code of a frequency reference cell element) and a frame start signal 254.This automatic frequency correction unit 108 starts after this frame start signal 254 is provided.Should produce a common pilot channel sign indicating number sequence 203 according to this main mess code sequence by main common pilot channel (P-CPICH) sign indicating number generator 202 with reference to cell element.This common pilot channel sign indicating number generator 202 is reseted in each frame, and with 1 times chip rate operation.The compound common pilot channel sign indicating number sequence 203 that this common pilot channel sign indicating number generator 202 is set up corresponding to antenna 1, itself and this space time transmission diversity (STTD) is opened or closes irrelevant.

This common pilot channel sign indicating number sequence 203 then is input to this sliding window correlator 204.This sliding window correlator 204 in time calculates the compound associations between this filtered digital signal 107 of continuity point place and this common pilot channel sign indicating number sequence 203.

For each common pilot channel symbol, preferably make the sliding window compound associations in fact in each possible multipath position.A plurality of continuously common pilot channel symbols are handled in this automatic frequency correction unit 108.For example, this sliding window correlator 204, this phase vectors generator 206 can be handled (quadruple unit) at per four symbol places with this phase vectors colligator 208.After this, the present invention will be with reference to the explanation of the situation of four symbols, and with global mobile communication service (UMTS) system as example.Yet it should be noted, subsequent descriptions (particularly numeral is described) just is used for purpose of description, rather than in order to restriction, it can utilize any quantity (for example to carry out real work, can utilize any symbol quantity to handle, to produce a phase error signal) for the basis.

In global mobile communication service (UMTS), a frame comprises 15 time slots, and each time slot comprises 2560 chips, and common pilot channel symbol sebolic addressing is just with 256 de-spread factor institute de-spread.Therefore, just transmit 10 common pilot channel symbols in each time slot, and just transmit 150 symbols in each frame.What this symbol was preferable but nonessential is, from second sign-on of each frame.In each frame first and last symbol are dropped, and remaining 148 symbols (it comprises 37 quadruple units) just by this sliding window correlator 204 with the processing that continues of quadruple unit.

Fig. 3 is the automatic frequency correction sub-cell 201 block icons of these receiver 100 automatic frequency correction unit 108.As shown in Fig. 3, this sliding window correlator 204 is preferably and comprises a plurality of vector correlator 274, and each all is assigned to the ad-hoc location of a multipath composition.Each vector correlator 274 is all handled the common pilot channel sign indicating number sequence 203 that is produced by a relevant common pilot channel sign indicating number generator 202.

As shown in Fig. 3, this continuously common pilot channel symbol is by S _k, S _K+1, S _K+2, and S _K+3Represented, wherein k is a symbolic pointer.The related compound relevance numerical value that is used for these symbols is then respectively with C _k(m), C _K+1(m), C _K+2(m) and C _K+3(m) expression, wherein m represents this integer multipath position.This compound associations can be represented by following equation:

$C_k\left(m\right)=\underset{n=k*256}{\overset{(k+1)256-1}{\mathrm{\Σ}}}r\left(n\right)p^{*}(n-m);$ Equation (2)

$C_{k+1}\left(m\right)=\underset{n=(k+1)*256}{\overset{(k+2)256-1}{\mathrm{\Σ}}}r\left(n\right)p^{*}(n-m);$ Equation (3)

$C_{k+2}\left(m\right)=\underset{n=(k+2)*256}{\overset{(k+3)256-1}{\mathrm{\Σ}}}r\left(n\right)p^{*}(n-m);$ Equation (4)

$C_{k+3}\left(m\right)=\underset{n=(k+3)*256}{\overset{(k+4)256-1}{\mathrm{\Σ}}}r\left(n\right)p^{*}(n-m);$ Equation (5)

K=2 wherein, 6,10,14 ..., 146, m=-5 ,-4 ..., 0,1 ... 50, r (n) expression de-spread list entries, p (n-m) expression is corresponding to the homing sequence of time shifting m, and n represents the discrete time index.,, exist for 56 compound associations of each even number and odd number sequence are real and do to equation (5) finding as equation (2) for each symbol.

This phase vectors generator 206 comprises a complex conjugate unit 276 and a multiplier 278, and this complex conjugate unit 276 is created in the complex conjugate of one of two continuous symbols vector association in the unit, similarly is two symbol S _K+1With S _K+3This multiplier 278 is with S _kVector association and S _K+1The vector association complex conjugate multiply each other, to produce a phase vectors P ¹, and with S _K+2Vector association and S _K+3The vector association complex conjugate multiply each other, to produce a phase vectors P ²The input ratio of this phase vectors generator is 1/T _s, and the output ratio is 1/2T _s, T wherein _sBe common pilot channel symbol ratio.

This phase vectors P ¹With P ²Explanation is corresponding to the phase error between two symbols (in other words, 256 chips) phase difference.This phase vectors P ¹With P ²Then obtained by following equation:

$P_k^1\left(m\right)=C_k\left(m\right){C_{k+1}}^{*}\left(m\right)$ Equation (6)

$P_k^2\left(m\right)=C_{k+2}\left(m\right){C_{k+3}}^{*}\left(m\right)$ Equation (7)

This phase vectors colligator 208 comprises an adder 280.This adder 280 is with the vector of the two phase place in each quadruple unit P ¹With P ²Add up.Therefore, for each quadruple unit, just produce in conjunction with phase vectors by following equation:

$P_k\left(m\right)=P_k^1\left(m\right)+P_k^2\left(m\right)$ Equation (8)

The input ratio of this phase vectors colligator is 1/2T _s, and its output ratio is 1/4T _sWhen starting transmission diversity, this operation meets the same-phase of two antennas and out of phase composition totalling.If there is no transmission diversity, this two continuous phases vector that meets just corresponding to a single antenna adds up.

In arbitrary situation of aforesaid equation, all cause processing gain completely.This means that when having transmission diversity real the work similarly is a kind of maximum rate combination (MRC), and when not having transmission diversity, because the processing of quadruple unit does not cause damage yet.This can not know following being reached of transmission diversity indication (no matter transmission diversity is by opening or closing).

Repeat this operation (in other words, relevance, phase vectors produce and combine with phase vectors) for each quadruple unit (in other words, four continuous symbols).

With reference to figure 2, this multipath colligator 210 will be corresponding to the different multipaths position of even number and odd number sequence in conjunction with phase vectors combination in addition.The purpose of this multipath colligator 210 is that faint multipath composition is eliminated, and one of only will be the strongest a combination.All in conjunction with phase vectors will with a kind of intensity door relatively, and only combined in conjunction with phase vectors, and other will be dropped greater than those of this door.This door can be according to this strongest defining in conjunction with phase vectors.The strongest one in all paths, P _Max, then represented with following equation:

$\left|P_{\max }\left(k\right)\right|=\underset{m}{\max }\left|P_k\left(m\right)\right|,$ Equation (9)

Wherein, m=-5 ,-4 ,-3 ,-2 ,-1,0,1,2 ..., 50.This maximum will be set up (1/4T in 1/4th places of this symbol ratio _s).Can utilize this door a scale factor and this maximum gained that multiplies each other, as following represented:

$m\∈M\⇔\left|P_m\right|\≥(\mathrm{afc}\_\mathrm{path}\_\mathrm{thresh})\×\left|P_{\max }\right|$ Equation (10)

This intensity can use following approximate expression to calculate:

abs _approx{z}＝max(|Re{z}|，|Im{z}|)+1/2min(|Re{z}|，|Im{z}|)

Equation (11)

This multipath is in conjunction with vector, P, only be all in this phase vectors summation more than door, as shown in the formula represented:

$P_k=\underset{m\∈M}{\mathrm{\Σ}}{P}_k\left(m\right)$ Equation (12)

The input of this colligator is 1/4T with the output ratio _s

This phase error estimator 212 calculates this phase angle in conjunction with phase vectors P.The phase angle of this phase vectors then equates with the arc tangent numerical value of its argument.For phase error, can use coarse estimation.This estimation only has correct result when little phase angle.Yet this also is that its correctness is actual important the time.This phase error, Δ θ then is expressed as:

$\mathrm{\Δ\θ}\≈\frac{\mathrm{Im}\left\{P_{\mathrm{av}}\right\}}{{\mathrm{abs}}_{\mathrm{approx}}\left\{P_{\mathrm{av}}\right\}}$ Equation (13)

The input of this phase error estimator 212 is 1/4T with the output ratio _s

This estimation phase error then before being sent to this loop filter 216, spreading all over a plurality of frames by this averaging unit 214 and averages.It on average then is expressed as follows:

$\mathrm{\Δ}\widehat{\mathrm{\θ}}=\frac{1}{M_{\mathrm{av}}}\underset{M_{\mathrm{av}}}{\mathrm{\Σ}}\mathrm{\Δ\θ}$ Equation (14)

This average time is relevant with this automatic frequency correction pattern.For example, in this quick mode, can be corresponding to 74 quadruple unit (in other words, M average time _Av=74) two frames.In this slow speed mode, can be corresponding to 740 quadruple unit (in other words, M average time _Av=740) 20 frames.

Finish average during after, this average phase mistake will be inferior one reseting during average.The input ratio of this averaging unit 214 is 1/4T _s, and its output ratio is per two frames or per 20 frames.

This loop filter 216 is a kind of weighting integrator, as shown in Fig. 4.Multiplied each other with a beta coefficient 282 from 215 of the outputs of this averaging unit 214, and integrated with delay cell 286 with an adder 284.The output of this loop filter 216 can be represented by following equation:

$\mathrm{\Δ}\widetilde{\mathrm{\θ}}=\mathrm{\β}\·\mathrm{\Δ}\widehat{\mathrm{\θ}}$ Equation (15)

The input of this loop filter 216 is identical with the output ratio, is per two frames or per 20 frames according to this automatic frequency correction operator scheme.

Refer again to Fig. 2, this control voltage generator 110 comprises a control voltage computing unit 218 and a digital analog converter (DAC) 220.From estimation phase error signal 109 outputs of this loop filter 216, and an appointment receiver carrier frequency 256 will be input to this control voltage computing unit 218.This control voltage computing unit 218 calculates a frequency correction numerical value 219.The calculating that removes phase error with time durations between these frequency correction numerical value 219 indications two continuous symbols.Therefore, this frequency correction numerical value 219 can be calculated by following equation:

$f_o=\frac{\mathrm{\Δ}\widetilde{\mathrm{\θ}}}{T_s}$ Equation (16)

Wherein, T _sDuring symbol.This frequency correction numerical value 219 then is converted into a digital analog converter (DAC) step length, and it becomes this temperature compensating crystal oscillator control voltage signal 111.For example, this digital analog converter (DAC) 220 can have 12 resolution, and therefore has 4096 layers.The approximate dynamic range of supposing this temperature compensating crystal oscillator for ± hundred ten thousand 8, for 2 megahertzes (GHz) carrier frequency, be 32 kilo hertzs (kHz) just for ± 16 kilo hertzs (kHz) or total amount, the step of this digital analog converter (DAC) 220, δ just equals 32000/4096=7.81 conspicuous (Hz).This temperature compensating crystal oscillator control voltage signal 111 just can be shown by simple table:

$V_{\mathrm{TCXO}}=\left[\frac{f_o}{\mathrm{\λ}\·\mathrm{\δ}}\right]$ Equation (17)

Wherein, λ is the temperature compensating crystal oscillator control slope of curve, as shown in equation (1).It can be assumed to be λ=1.Yet λ can be a kind of by entity temperature compensating crystal oscillator 113 employed numerical value.This numerical value λ should be comprised among the overall loop gain.Therefore, used by this actual temperature compensated crystal oscillator 113 and determining to be used for

Actual average numerical value after, this loop filter coefficient

Should be adjusted into:

$\widetilde{\mathrm{\β}}=\mathrm{\β}\·\widetilde{\mathrm{\λ}}$ Equation (18)

111 of voltage signals of this temperature compensating crystal oscillator control are applied to this temperature compensating crystal oscillator 113 (for example, according to this fast or operator scheme at a slow speed, being respectively per two or per 20 frames) in analog radio 102.

Embodiment

1. one kind is transmitting in the wireless communication system of aiming symbol, from the method for dynamic(al) correction receiver area oscillation device frequency by a pilot channel.

2. as embodiment the 1st described method, comprise the signal that utilization is produced by this area oscillation device, a received RF signal is converted to a kind of step of fundamental frequency signal, the frequency of this area oscillation device is then controlled by a control voltage signal.

3. as arbitrary described method in as described in the embodiment the 1st to the 2nd, comprise the step that produces this fundamental frequency signal sample.

4. as embodiment the 3rd described method, comprise that in addition utilization is the mode that meets the continuous aiming symbol of predetermined number with a corresponding guidance code sequence with sample process, produce the step of phase error signal.

5. as embodiment the 4th described method, comprise the step that produces a control voltage signal according to this phase error signal in addition.

6. as arbitrary described method in as described in the embodiment the 4th to the 5th, wherein this phase error signal be by utilize N guidance code sequence generator produce corresponding to N continuously the step of aiming symbol guidance code sequence produced.

7. as embodiment the 6th described method, comprise in addition and utilize N sliding window correlator, produce the step that is used for this N continuous each sample of aiming symbol and guidance code sequence compound associations.

8. as embodiment the 7th described method, comprise in addition, between two continuous aiming symbols, produce the step of a phase vectors by a plurality of phase vectors generators.

9. as embodiment the 8th described method, comprise that in addition the phase vectors that will be produced by these a plurality of phase vectors generators is combined into a step in conjunction with phase vectors.

10. as embodiment the 9th described method, comprise the step that produces this phase error signal according to this in conjunction with phase vectors in addition.

11., comprise in addition, and the step that this average phase rub-out signal is added up with this phase error signal averaging as arbitrary described method in as described in the embodiment the 3rd to the 10th.

12. as arbitrary described method in as described in the embodiment the 5th to the 11st, wherein this control voltage is produced by the step that produces a frequency correction numerical value from this phase error.

13., comprise that in addition utilization is converted to the mode of a simulation value with a digital analog converter (DAC) with this frequency correction numerical value, produces the step of control voltage signal as embodiment the 12nd described method.

14. as arbitrary described method in as described in the embodiment the 1st to the 13rd, wherein this guidance code sequence is to produce with reference to cell element corresponding to an automatic frequency correction.

15. as embodiment the 14th described method, wherein when the service of high-speed downstream link packet access started, this automatic frequency correction was a kind of high-speed downstream link packet access service cell element with reference to cell element.

16. as embodiment the 14th described method, wherein when the service of high-speed downstream link packet access did not start, this automatic frequency correction was a kind of frequency service cell element with reference to cell element.

17., wherein in the transmission of this aiming symbol, utilize space time transmission diversity (STTD) as arbitrary described method in as described in the embodiment the 1st to the 16th.

18. as embodiment the 17th described method, wherein maximum rate need not receive transmission diversity indication in conjunction with finishing of (MRC).

19. as embodiment the 17th described method, wherein this space time transmission diversity (STTD) is by real work of a kind of Alamouti transmission diversity institute.

20. as arbitrary described method in as described in the embodiment the 1st to the 19th, wherein this guidance code sequence is a kind of common pilot channel sign indicating number sequence.

21., wherein will handle, to produce this phase error signal corresponding to the sample of per four continuous aiming symbols as arbitrary described method in as described in the embodiment the 4th to the 20th.

22. in a kind of wireless communication system by pilot channel transmission aiming symbol, a receiver is in order to the frequency from this receiver area oscillation device of dynamic(al) correction.

23. as embodiment the 22nd described receiver, it comprises an analog radio, utilizing the signal that is produced by this area oscillation device, a received RF signal is converted to a kind of step of fundamental frequency signal, the frequency of this area oscillation device is then controlled by a control voltage signal.

24. as arbitrary described receiver in as described in the embodiment the 22nd to the 23rd, it comprises an analog-digital converter (ADC), in order to produce the sample of this fundamental frequency signal.

25. as embodiment the 24th described receiver, it comprises an automatic frequency correction unit, in order to be the mode that meets the continuous aiming symbol of predetermined number with a corresponding guidance code sequence with sample process, produces the phase error signal.

26. as embodiment the 25th described receiver, it comprises and one of this analog radio and this automatic frequency correction unit communication control voltage generator that this control voltage generator is then in order to produce a control voltage signal according to this phase error signal.

27. as arbitrary described receiver in as described in the embodiment the 25th to the 26th, wherein this automatic frequency correction unit comprises N guidance code sequence generator, each guidance code sequence generator all produces corresponding to N the guidance code sequence of aiming symbol continuously.

28. as embodiment the 27th described receiver, wherein this automatic frequency correction unit comprises N sliding window correlator, each sliding window correlator all produces the compound associations that is used for this N continuous each sample of aiming symbol and guidance code sequence.

29. as embodiment the 28th described receiver, wherein this automatic frequency correction unit comprises a plurality of phase vectors generators, each phase vectors generator all produces a phase vectors between two continuous aiming symbols.

30. as embodiment the 29th described receiver, wherein this automatic frequency correction unit comprises a phase vectors colligator, in order to being combined into one in conjunction with phase vectors by the phase vectors that these a plurality of phase vectors generators are produced.

31. as embodiment the 30th described receiver, wherein this automatic frequency correction unit comprises a phase error estimator, in order to produce this phase error signal according to this in conjunction with phase vectors.

32. as arbitrary described receiver in as described in the embodiment the 25th to the 31st, wherein this automatic frequency correction unit comprises an averaging unit in addition, averages in order to the phase error signal that this phase error estimator is produced.

33. as embodiment the 32nd described receiver, wherein this automatic frequency correction unit comprises the rate filter one time, in order to this average phase rub-out signal is added up.

34. as arbitrary described receiver in as described in the embodiment the 25th to the 33rd, wherein this automatic frequency correction controller comprises the multiple set to estimator of a multipath colligator and N guidance code sequence generator, a N sliding window correlator, phase vectors generator and a phase mass, each set all is designated to one of a plurality of multipath compositions, and this multipath colligator carries out combination with the output of this phase vectors colligator by this.

35. as arbitrary described receiver in as described in the embodiment the 26th to the 34th, wherein this control voltage generator comprises a control voltage computing unit, in order to produce a frequency correction numerical value according to this phase error.

36. as embodiment the 35th described method, wherein this control voltage generator comprises a digital analog converter (DAC), in order to produce this control voltage signal according to this frequency correction numerical value.

37. as arbitrary described receiver in as described in the embodiment the 27th to the 36th, wherein this each guidance code sequence generator produces corresponding to the guidance code sequence signal of an automatic frequency correction with reference to cell element.

38. as embodiment the 37th described receiver, wherein when the service of high-speed downstream link packet access started, this automatic frequency correction was a kind of high-speed downstream link packet access service cell element with reference to cell element.

39. as embodiment the 37th described receiver, wherein when the service of high-speed downstream link packet access did not start, this automatic frequency correction was a kind of frequency service cell element with reference to cell element.

40., wherein in the transmission of this aiming symbol, utilize space time transmission diversity (STTD) as arbitrary described receiver in as described in the embodiment the 22nd to the 39th.

41. as arbitrary described receiver in as described in the embodiment the 22nd to the 40th, wherein maximum rate need not receive transmission diversity indication in conjunction with finishing of (MRC).

42. as embodiment the 41st described receiver, wherein this space time transmission diversity (STTD) is by real work of a kind of Alamouti transmission diversity institute.

43. as arbitrary described receiver in as described in the embodiment the 22nd to the 42nd, wherein this guidance code sequence is a kind of common pilot channel sign indicating number sequence.

44. as arbitrary described receiver in as described in the embodiment the 27th to the 43rd, wherein this each guidance code sequence generator is reseted when frame start signal indication one new frame begins at every turn.

45. as arbitrary described receiver in as described in the embodiment the 27th to the 44th, wherein this each guidance code sequence generator is all operated at a chip rate place.

46., wherein will handle, to produce this phase error signal corresponding to the sample of per four continuous aiming symbols as arbitrary described receiver in as described in the embodiment the 25th to the 45th.

47. in a kind of wireless communication system by pilot channel transmission aiming symbol, an integrated circuit (IC) is in order to the frequency from this receiver area oscillation device of dynamic(al) correction,

48. as embodiment the 47th described integrated circuit (IC), it comprises an analog radio, utilizing the signal that is produced by this area oscillation device, a received RF signal is converted to a kind of step of fundamental frequency signal, the frequency of this area oscillation device is then controlled by a control voltage signal.

49. as arbitrary described integrated circuit (IC) in as described in the embodiment the 47th to the 48th, it comprises an analog-digital converter (ADC), in order to produce the sample of this fundamental frequency signal.

50. as embodiment the 49th described integrated circuit (IC), it comprises an automatic frequency correction unit, in order to be the mode that meets the continuous aiming symbol of predetermined number with a corresponding guidance code sequence with sample process, produces the phase error signal.

51. as embodiment the 50th described integrated circuit (IC), it comprises and one of this analog radio and this automatic frequency correction unit communication control voltage generator that this control voltage generator is then in order to produce a control voltage signal according to this phase error signal.

52. as arbitrary described integrated circuit (IC) in as described in the embodiment the 50th to the 51st, wherein this automatic frequency correction unit comprises N guidance code sequence generator, each guidance code sequence generator all produces corresponding to N the guidance code sequence of aiming symbol continuously.

53. as embodiment the 52nd described integrated circuit (IC), wherein this automatic frequency correction unit comprises N sliding window correlator, each sliding window correlator all produces the compound associations that is used for this N continuous each sample of aiming symbol and guidance code sequence.

54. as embodiment the 53rd described integrated circuit (IC), wherein this automatic frequency correction unit comprises a plurality of phase vectors generators, each phase vectors generator all produces a phase vectors between two continuous aiming symbols.

55. as embodiment the 54th described integrated circuit (IC), wherein this automatic frequency correction unit comprises a phase vectors colligator, in order to being combined into one in conjunction with phase vectors by the phase vectors that these a plurality of phase vectors generators are produced.

56. as embodiment the 55th described integrated circuit (IC), wherein this automatic frequency correction unit comprises a phase error estimator, in order to produce this phase error signal according to this in conjunction with phase vectors.

57. as arbitrary described integrated circuit (IC) in as described in the embodiment the 50th to the 56th, wherein this automatic frequency correction unit comprises an averaging unit in addition, averages in order to the phase error signal that this phase error estimator is produced.

58. as embodiment the 57th described integrated circuit (IC), wherein this automatic frequency correction unit comprises the rate filter one time, in order to this average phase rub-out signal is added up.

59. as arbitrary described integrated circuit (IC) in as described in the embodiment the 50th to the 58th, wherein this automatic frequency correction controller comprises the multiple set to estimator of a multipath colligator and N guidance code sequence generator, a N sliding window correlator, phase vectors generator and a phase mass, each set all is designated to one of a plurality of multipath compositions, and this multipath colligator carries out combination with the output of this phase vectors colligator by this.

60. as arbitrary described integrated circuit (IC) in as described in the embodiment the 51st to the 59th, wherein this control voltage generator comprises a control voltage computing unit, in order to produce a frequency correction numerical value according to this phase error.

61. as embodiment the 60th described method, wherein this control voltage generator comprises a digital analog converter (DAC), in order to produce this control voltage signal according to this frequency correction numerical value.

62. as arbitrary described integrated circuit (IC) in as described in the embodiment the 52nd to the 61st, wherein this each guidance code sequence generator produces corresponding to the guidance code sequence signal of an automatic frequency correction with reference to cell element.

63. as embodiment the 62nd described integrated circuit (IC), wherein when the service of high-speed downstream link packet access started, this automatic frequency correction was a kind of high-speed downstream link packet access service cell element with reference to cell element.

64. as embodiment the 62nd described integrated circuit (IC), wherein when the service of high-speed downstream link packet access did not start, this automatic frequency correction was a kind of frequency service cell element with reference to cell element.

65., wherein in the transmission of this aiming symbol, utilize space time transmission diversity (STTD) as arbitrary described integrated circuit (IC) in as described in the embodiment the 47th to the 64th.

66. as arbitrary described integrated circuit (IC) in as described in the embodiment the 47th to the 65th, wherein maximum rate need not receive transmission diversity indication in conjunction with finishing of (MRC).

67. as embodiment the 66th described integrated circuit (IC), wherein this space time transmission diversity (STTD) is by real work of a kind of Alamouti transmission diversity institute.

68. as arbitrary described integrated circuit (IC) in as described in the embodiment the 47th to the 67th, wherein this guidance code sequence is a kind of common pilot channel sign indicating number sequence.

69. as arbitrary described integrated circuit (IC) in as described in the embodiment the 52nd to the 68th, wherein this each guidance code sequence generator is reseted when frame start signal indication one new frame begins at every turn.

70. as arbitrary described integrated circuit (IC) in as described in the embodiment the 52nd to the 69th, wherein this each guidance code sequence generator is all operated at a chip rate place.

71., wherein will handle, to produce this phase error signal corresponding to the sample of per four continuous aiming symbols as arbitrary described integrated circuit (IC) in as described in the embodiment the 50th to the 70th.

Though feature of the present invention and assembly are described in this preferred embodiment with particular combination, each feature or assembly can be use separately with assembly with the further feature of this preferred embodiment, or with further feature of the present invention with assembly or carry out different combinations individually.

Claims (42)

1. One kind in a kind of wireless communication system that passes through pilot channel transmission aiming symbol from the method for one of dynamic(al) correction one receiver area oscillation device frequency, this method comprises:

   (a) utilize that one of to be produced signal by this area oscillation device be a fundamental frequency signal with radio frequency (RF) conversion of signals that receives, the frequency of this area oscillation device is then controlled voltage signal by one and is controlled;

   (b) produce the sample of this fundamental frequency signal;

   (c) by sample process is had the continuous aiming symbol of one of corresponding guidance code sequence predetermined number to produce a phase error signal for meeting; And

   (d) control voltage signal according to this phase error signal to produce one.
2. 2. method according to claim 1 is characterized in that, step (c) comprising:

   By N guidance code sequence generator to produce corresponding to N one of aiming symbol guidance code sequence continuously;

   Utilize N sliding window correlator to be used for this N respectively the compound associations of one of aiming symbol guidance code sequence and sample continuously with generation;

   Utilize a plurality of phase vectors generators one of to produce between two continuous aiming symbols phase vectors;

   By carrying out combination to produce one by a plurality of phase vectors phase vectors that generator produces in conjunction with phase vectors; And

   According to this in conjunction with phase vectors to produce this phase error signal.
3. 3. method according to claim 2 more comprises:

   This phase error signal is averaged; And

   This average phase rub-out signal is added up.
4. 4. method according to claim 2 is characterized in that, step (d) comprising:

   From this phase error to produce a frequency correction numerical value; And

   Utilization is converted to a corresponding simulation value to produce this control voltage signal with a digital analog converter (DAC) with this frequency correction numerical value.
5. 5. method according to claim 1 is characterized in that, the generation of this guidance code sequence meets an automatic frequency correction (AFC) with reference to cell element.
6. 6. method according to claim 5 is characterized in that, when the service of high-speed downstream link packet access started, this automatic frequency correction was high-speed downstream link packet access service cell element with reference to cell element.
7. 7. method according to claim 5 is characterized in that, when the service of high-speed downstream link packet access did not start, this automatic frequency correction was frequency service cell element with reference to cell element.
8. 8. method according to claim 1 is characterized in that, in the transmission of this aiming symbol is to make space time transmission diversity (STTD).
9. 9. method according to claim 8 is characterized in that, maximum rate need not receive transmission diversity indication in conjunction with finishing of (MRC).
10. 10. method according to claim 8 is characterized in that, this space time transmission diversity is implemented by an Alamouti transmission diversity.
11. 11. method according to claim 1 is characterized in that, this guidance code sequence is main common pilot channel (CPICH) sign indicating number sequence.
12. 12. method according to claim 1 is characterized in that, is treated to produce this phase error signal corresponding to the sample of per four continuous aiming symbols.
13. 13. the receiver in the wireless communication system that transmits aiming symbol by a pilot channel, this receiver is in order to the frequency from one of this receiver of dynamic(al) correction area oscillation device, and this receiver comprises:

    One analog radio one of produces signal in order to utilize this area oscillation device, is a fundamental frequency signal with radio frequency (RF) conversion of signals that receives, and the frequency of this area oscillation device is then controlled by a control voltage signal;

    One analog-digital converter (ADC) is in order to the sample by this fundamental frequency signal;

    One automatic frequency correction unit is to meet the mode with one of a corresponding guidance code sequence continuous aiming symbol of predetermined number in order to utilize sample process, to produce a phase error signal; And

    One control voltage generator, its and this analog radio and this automatic frequency correction unit communication, this control voltage generator is in order to control voltage signal according to this phase error signal to produce one.
14. 14. receiver according to claim 13 is characterized in that, this automatic frequency correction unit comprises:

    N guidance code sequence generator, each guidance code sequence generator all produce corresponding to one of N continuous aiming symbol guidance code sequence;

    N sliding window correlator, each sliding window correlator all produce and are used for this N respectively the compound associations of one of aiming symbol guidance code sequence and sample continuously;

    A plurality of phase vectors generators, each phase vectors generator one of all produce between two continuous aiming symbols phase vectors;

    One phase vectors colligator, it was by carrying out combination to produce one in conjunction with phase vectors by a plurality of phase vectors phase vectors that generator produces; And

    One phase error estimator, in order to according to this in conjunction with phase vectors to produce this phase error signal.
15. 15. receiver according to claim 14 is characterized in that, this automatic frequency correction unit more comprises:

    One averaging unit averages in order to the phase error signal that this phase error estimator is produced; And

    One loop filter is in order to add up this average phase rub-out signal.
16. 16. receiver according to claim 14, it is characterized in that, this automatic frequency correction controller comprises the multiple set to estimator of a multipath colligator and N guidance code sequence generator, a N sliding window correlator, phase vectors generator and a phase mass, each set all is designated to one of a plurality of multipath compositions, and this multipath colligator carries out combination with the output of this phase vectors colligator by this.
17. 17. receiver according to claim 14 is characterized in that, this control voltage generator comprises:

    One control voltage computing unit, in order to according to this phase error to produce a frequency correction numerical value; And

    One digital analog converter (DAC), in order to according to this frequency correction numerical value to produce this control voltage signal.
18. 18. receiver according to claim 14 is characterized in that, each guidance code sequence generator produces and meets the guidance code sequence of an automatic frequency correction with reference to cell element.
19. 19. receiver according to claim 18 is characterized in that, when the service of high-speed downstream link packet access started, this automatic frequency correction was high-speed downstream link packet access service cell element with reference to cell element.
20. 20. receiver according to claim 18 is characterized in that, when the service of high-speed downstream link packet access did not start, this automatic frequency correction was frequency service cell element with reference to cell element.
21. 21. receiver according to claim 13 is characterized in that, space time transmission diversity system is used for the transmission of this aiming symbol.
22. 22. receiver according to claim 21 is characterized in that, maximum rate need not receive transmission diversity indication in conjunction with finishing of (MRC).
23. 23. receiver according to claim 21 is characterized in that, this space time transmission diversity is implemented by an Alamouti transmission diversity.
24. 24. receiver according to claim 14 is characterized in that, this guidance code sequence is a main common pilot channel sign indicating number sequence.
25. 25. receiver according to claim 14 is characterized in that, each described guidance code sequence generator is reseted when each frame start signal indication one new frame begins.
26. 26. receiver according to claim 14 is characterized in that, each described guidance code sequence generator is to operate with a chip rate.
27. 27. receiver according to claim 13 is characterized in that, will handle corresponding to the sample of per four continuous aiming symbols, to produce this phase error signal.
28. 28. the integrated circuit (IC) in the wireless communication system that transmits aiming symbol by a pilot channel, this integrated circuit is that this integrated circuit comprises in order to the frequency from one of dynamic(al) correction receiver area oscillation device:

    One analog radio is a fundamental frequency signal in order to utilize this area oscillation device one of to produce signal with radio frequency (RF) conversion of signals that receives, and the frequency of this area oscillation device is then controlled by a control voltage signal;

    One analog-digital converter (ADC) is in order to produce the sample of this fundamental frequency signal;

    One automatic frequency correction unit is in order to by being to meet the mode with one of a corresponding guidance code sequence continuous aiming symbol of predetermined number with sample process, to produce a phase error signal; And

    One control voltage generator, its and this analog radio and this automatic frequency correction unit communication, this control voltage generator is in order to control voltage signal according to this phase error signal to produce one.
29. 29. integrated circuit according to claim 28 is characterized in that, this automatic frequency correction unit comprises:

    N guidance code sequence generator, each guidance code sequence generator all produce corresponding to one of N continuous aiming symbol guidance code sequence;

    N sliding window correlator, each sliding window correlator all produce and are used for this N respectively the compound associations of one of aiming symbol guidance code sequence and sample continuously;

    A plurality of phase vectors generators, each phase vectors generator one of all produce between two continuous aiming symbols phase vectors;

    One phase vectors colligator, it was by carrying out combination to produce one in conjunction with phase vectors by a plurality of phase vectors phase vectors that generator produces; And

    One phase error estimator, in order to according to this in conjunction with phase vectors to produce this phase error signal.
30. 30. integrated circuit according to claim 29 is characterized in that, this automatic frequency correction unit more comprises:

    One averaging unit averages in order to the phase error signal that this phase error estimator is produced; And

    One loop filter is in order to add up this average phase rub-out signal.
31. 31. integrated circuit according to claim 29, it is characterized in that, this automatic frequency correction controller comprises the multiple set to estimator of a multipath colligator and N guidance code sequence generator, a N sliding window correlator, phase vectors generator and a phase mass, each set all is designated to one of a plurality of multipath compositions, and this multipath colligator carries out combination with the output of this phase vectors colligator by this.
32. 32. integrated circuit according to claim 29 is characterized in that, this control voltage generator comprises:

    One control voltage computing unit, in order to according to this phase error to produce a frequency correction numerical value; And

    One digital analog converter (DAC), in order to according to this frequency correction numerical value to produce this control voltage signal.
33. 33. integrated circuit according to claim 29 is characterized in that, each guidance code sequence generator produces and meets the guidance code sequence of an automatic frequency correction with reference to cell element.
34. 34. integrated circuit according to claim 33 is characterized in that, when the service of high-speed downstream link packet access started, this automatic frequency correction was high-speed downstream link packet access service cell element with reference to cell element.
35. 35. integrated circuit according to claim 33 is characterized in that, when the service of high-speed downstream link packet access did not start, this automatic frequency correction was frequency service cell element with reference to cell element.
36. 36. integrated circuit according to claim 28 is characterized in that, space time transmission diversity system is used for the transmission of this aiming symbol.
37. 37. integrated circuit according to claim 36 is characterized in that, maximum rate need not receive transmission diversity indication in conjunction with finishing of (MRC).
38. 38. integrated circuit according to claim 36 is characterized in that, this space time transmission diversity is implemented by an Alamouti transmission diversity.
39. 39. integrated circuit according to claim 29 is characterized in that, this guidance code sequence is a main common pilot channel sign indicating number sequence.
40. 40. integrated circuit according to claim 29 is characterized in that, each described guidance code sequence generator is reseted when each frame start signal indication one new frame begins.
41. 41. integrated circuit according to claim 29 is characterized in that, each described guidance code sequence generator is to operate with a chip rate.
42. 42. integrated circuit according to claim 28 is characterized in that, will handle corresponding to the sample of per four continuous aiming symbols, to produce this phase error signal.

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