CN101605004A - TD-HSUPA signal quality analysis measuring device and method - Google Patents
TD-HSUPA signal quality analysis measuring device and method Download PDFInfo
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Abstract
The invention discloses a kind of TD-HSUPA signal quality analysis measuring device and method, described device comprises: measuring-signal receiving element, DDC converter unit, time slot synchronization unit, frequency error computing and elimination unit, signal descrambling and de-spreading unit, with reference to code channel signal recovery unit, IQ with reference to HSUPA signal recovery unit, the TD-HSUPA measuring-signal that terminal sends is handled through said units successively, finally utilizes modulation domain measurement unit and sign indicating number domain measurement unit error of calculation amplitude of the vector value and code domain power value.Device provided by the invention is analyzed and is measured the measuring-signal of terminal output, sends to high-quality, low bit error ground restituted signal not only for the base station physical layer, also measures the frequency error and the Error Vector Magnitude value of measuring-signal.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of TD-HSUPA signal quality analysis measuring device and method.
Background technology
In order to satisfy the growing demand of user to high-speed packet data service, also in order to compete mutually the support of data business with other wireless technology better, 3GPP (3rd Generation PartnershipProject, third generation partner program) in R7, introduced HSUPA (High Speed Uplink PacketAccess, High Speed Uplink Packet inserts) technology, TD-HSUPA (Time Division-High SpeedUplink Packet Access, the time-division-High Speed Uplink Packet inserts) standard finished the 3GPP standardization effort in 2007, finished CCSA (China Communications Standards Association, CCSA) standardization effort in 2008.TD-HSUPA introduced new enhancing dedicated channel (E-DCH) and corresponding E-DCH uplink physical channel (E-PUCH), and the physical characteristic that E-PUCH supports is as follows aspect the physical layer carrying:
(1) effective spreading factor 16,8,4,2,1; (2) QPSK (Quadrature Phase Shift Keying, Quadrature Phase Shift Keying), 16QAM (Quadrature Amplitude Modulation, quadrature amplitude modulation) modulation.(3) E-UCCH transmission; (4) TPC (Transmit Power Control, through-put power control) transmission; The protection of (5) 16 chip lengths at interval; (6) adopt the Midamble method of salary distribution of giving tacit consent to specific with UE.
Because uplink physical channel all adopts TD-SCDMA the R7 version before is the QPSK modulation, in order to improve uploading rate, enables to reach the requirement of 2.2Mbps uploading rate in the TD-HSUPA technology, the up 16QAM that must adopt modulates.Therefore, analysis of TD-HSUPA signal quality and measurement (comprising frequency error measurement, modulating domain analyzing, sign indicating number domain analysis etc.) there is very important meaning, occasions such as TD-SCDMA terminal complete machine RF consistency is tested in common being applied to, terminal research and development test.Yet at present, TD-SCDMA enhancement techniques HSUPA signal quality analysis and measurement also are in development, also do not have product to release.
Summary of the invention
The invention provides a kind of TD-HSUPA signal quality analysis measuring device and method, TD-HSUPA terminal quality of uplink signal is analyzed and measured, not only realized to the base station physical layer provides quality height, upward signal that error is little, but also measured the sign indicating number territory sum of errors Error Vector Magnitude value etc. of measuring-signal.
The invention provides a kind of TD-HSUPA signal quality analysis measuring device, comprising:
The measuring-signal receiving element is used for the TD-HSUPA measuring-signal that receiving terminal sends, and this measuring-signal is carried out being sent to the DDC converter unit after down-conversion, the digitized processing;
The DDC converter unit is used for the measuring-signal after the described measuring-signal receiving element processing is carried out being sent to time slot synchronization unit after digital quadrature demodulation, filtering extraction and shaping filter are handled formation I, Q two-way baseband signal streams;
Time slot synchronization unit is used to receive described I, Q two-way baseband signal streams, determines to send it to frequency error computing and elimination unit behind the time slot original position of this signal flow and the trainingization sequence location;
Frequency error computing and elimination unit, be used to receive I, the Q two-way baseband signal streams that described time slot synchronization unit sends, calculate the phase place of trainingization sequence in the described signal flow, adjusted signal flow is sent adjust the phase place of described signal flow according to result of calculation after; Described adjusted signal flow comprises the burst time slot data and the trainingization sequence of TD-HSUPA measuring-signal;
Signal descrambling and de-spreading unit, be used to receive described frequency error computing and eliminate the signal flow that the unit sends, determine the scrambler sequence of coupling according to trainingization sequence in this signal flow after, burst time slot data in the described signal flow are carried out descrambling and despreading processing, generate the data of each code channel, and the data of each code channel are sent;
With reference to code channel signal recovery unit, be used to receive and the data of described each code channel of demodulation after, obtain continuous binary bit stream, and this bit stream modulated form I, Q and send after with reference to the code channel signal flow;
IQ is with reference to HSUPA signal recovery unit, be used to receive described I, the Q that sends with reference to code channel signal recovery unit with reference to the code channel signal flow, carry out spread spectrum, scrambling, shaping filter and handle and form I, Q and be sent to the modulation domain measurement unit after with reference to the HSUPA baseband signal streams;
The modulation domain measurement unit is used for the performance number with reference to HSUPA signal recovery unit and frequency error computing and elimination unit transmission signal based on described IQ, error of calculation amplitude of the vector value;
Sign indicating number domain measurement unit is used for based on frequency error computing and eliminates unit, signal descrambling and de-spreading unit and send the performance number of signal with reference to code channel signal recovery unit, calculates code domain power value and peak code territory performance number.
Wherein, the TD-HSUPA measuring-signal that described measuring-signal receiving element receiving terminal sends, after this signal down-converted to intermediate-freuqncy signal, this intermediate-freuqncy signal is carried out digitized processing, and the sampling clock that described digitized processing adopted is the integral multiple of described TD-HSUPA measuring-signal spreading rate.
Device provided by the invention further has following characteristics:
After described time slot synchronization unit receives described I, Q two-way baseband signal streams, change the time slot original position that the rising edge that produces is determined described signal flow by described signal flow time slot power, carry out peak value by the training sequence in the described signal flow and detect, determine the training sequence location of described signal flow.
Described frequency error computing and eliminate the unit and receive I that described time slot synchronization unit sends, Q two-way baseband signal streams after, calculate the phase place of trainingization sequence in the described signal flow, deviation and start-phase by the phase calculation carrier frequency that calculates, and the phase place of adjusting described signal flow according to the deviation and the start-phase of described carrier frequency, amplitude information remains unchanged.
Described with reference to code channel signal recovery unit, also be used for the continuous binary bit stream of obtaining is sent to the physical layer of base station.
I, Q that described modulation domain measurement unit sends with reference to HSUPA signal recovery unit according to described IQ obtain the performance number of reference signal with reference to the HSUPA baseband signal streams; According to I, the Q two-way baseband signal streams of described frequency error computing and the transmission of elimination unit, obtain the performance number of measuring-signal, utilize formula:
RMS (measured signal power value-reference signal power value)/RMS (reference signal power value) * 100%, error of calculation amplitude of the vector.
Described sign indicating number domain measurement unit is according to described frequency error computing and eliminate the adjusted I in unit, Q two-way baseband signal streams, obtains the performance number of measuring-signal; The data of each code channel that sends according to described signal descrambling and de-spreading unit obtain the performance number of each code channel and according to described I, the Q that sends with reference to code channel signal recovery unit with reference to the code channel signal flow, obtain with reference to code channel signal power value,
Utilize formula: 10log (performance number of each code channel performance number/measuring-signal) dB, calculate code domain power;
Utilize formula: 10log ((code channel maximum power value)
2/ (RMS (with reference to code channel signal power value))
2), calculate the peak value code domain power.
The present invention also provides a kind of TD-HSUPA signal quality analysis measurement method, comprising:
The TD-HSUPA measuring-signal that step 1, measuring-signal receiving element receiving terminal send, and this measuring-signal carried out being sent to the DDC converter unit after down-conversion, the digitized processing;
Measuring-signal after step 2, DDC converter unit are handled described measuring-signal receiving element carries out being sent to time slot synchronization unit after digital quadrature demodulation, filtering extraction and shaping filter are handled formation I, Q two-way baseband signal streams;
Step 3, time slot synchronization unit receive described I, Q two-way baseband signal streams, determine to send it to frequency error computing and elimination unit behind the time slot original position of this signal flow and the trainingization sequence location;
Step 4, frequency error computing and elimination unit receive I, the Q two-way baseband signal streams that described time slot synchronization unit sends, calculate the phase place of trainingization sequence in the described signal flow, adjusted signal flow is sent adjust the phase place of described signal flow according to result of calculation after; Described adjusted signal flow comprises the burst time slot data and the trainingization sequence of TD-HSUPA measuring-signal;
Step 5, signal descrambling and de-spreading unit receive described frequency error computing and eliminate the signal flow that the unit sends, determine the scrambler sequence of coupling according to trainingization sequence in this signal flow after, burst time slot data in the described signal flow are carried out descrambling and despreading processing, generate the data of each code channel, and the data of each code channel are sent;
Step 6, with reference to code channel signal recovery unit receive and the data of described each code channel of demodulation after, obtain continuous binary bit stream, and this bit stream modulated form I, Q and send after with reference to the code channel signal flow;
Step 7, sign indicating number domain measurement unit are based on frequency error computing and eliminate unit, signal descrambling and de-spreading unit and send the performance number of signal with reference to code channel signal recovery unit, calculate code domain power value and peak code territory performance number;
Step 8, IQ receive described I, the Q that sends with reference to code channel signal recovery unit with reference to the code channel signal flow with reference to HSUPA signal recovery unit, carry out spread spectrum, scrambling, shaping filter and handle and form I, Q and be sent to the modulation domain measurement unit after with reference to the HSUPA baseband signal streams;
Step 9, modulation domain measurement unit are based on the performance number of described IQ with reference to HSUPA signal recovery unit and frequency error computing and elimination unit transmission signal, error of calculation amplitude of the vector value.
Wherein, also comprise in the above-mentioned steps 6: described obtain continuous binary bit stream with reference to code channel signal recovery unit after, the bit stream that obtains is sent to the physical layer of base station.
In the described step 7, sign indicating number domain measurement unit by using formula: 10log (performance number of each code channel performance number/measuring-signal) dB, calculate code domain power; Sign indicating number domain measurement unit by using formula: 10log ((code channel maximum power value) 2/ (RMS (with reference to code channel signal power value)) 2) calculates the peak value code domain power;
In the described step 9, modulation domain measurement unit by using formula: RMS (measured signal power value-reference signal power value)/RMS (reference signal power value) * 100%, error of calculation amplitude of the vector.
The present invention has the following advantages:
Device provided by the invention is in conjunction with TD-HSUPA terminal test environment, by setting up suitable test analysis model, realize finishing quickly and accurately the frequency error of TD-HSUPA terminal upward signal, phase error, Error Vector Magnitude, code domain power, the isoparametric measurement of peak value code domain power, the quality of multianalysis TD-HSUPA terminal upward signal provides accurate data stream for simultaneously the base station physical layer decoder.Device provided by the invention is applicable to the modulation domain and a sign indicating number territory testing performance index in the processes such as research and development, design, manufacturing, service, maintenance and authentication of TD-HSUPA terminal.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to introduce simply the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structure chart of a kind of TD-HSUPA signal quality analysis measuring device provided by the invention;
The structure chart of the TD-HSUPA signal quality analysis measuring device that Fig. 2 provides for the embodiment of the invention;
Fig. 3 is the structure chart of burst time slot data in the embodiment of the invention;
Fig. 4 is the flow chart of a kind of TD-HSUPA signal quality analysis measurement method provided by the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
The invention provides a kind of TD-HSUPA signal quality analysis measuring device and method, TD-HSUPA terminal quality of uplink signal is analyzed and measured, not only realized to the base station physical layer provides more excellent upward signals of quality such as quality height, error be little, but also measured the frequency error and the Error Vector Magnitude value of measuring-signal.
Concrete, the invention provides a kind of TD-HSUPA signal quality analysis measuring device, as shown in Figure 1, comprising:
Measuring-signal receiving element 101 is used for the TD-HSUPA measuring-signal that receiving terminal sends, and this measuring-signal is carried out being sent to DDC converter unit 102 after down-conversion, the digitized processing;
Time slot synchronization unit 103 is used to receive I, Q two-way baseband signal streams, determines to send it to frequency error computing and elimination unit 104 behind the time slot original position of this signal flow and the trainingization sequence location;
Frequency error computing and elimination unit 104, be used for I, Q two-way baseband signal streams that receiving slot lock unit 103 sends, calculate the phase place of trainingization sequence in this signal flow, adjusted signal flow is sent adjust the phase place of described signal flow according to result of calculation after; Wherein, adjusted signal flow comprises the burst time slot data and the trainingization sequence of TD-HSUPA measuring-signal;
Signal descrambling and de-spreading unit 105, be used for receiver frequency error and calculate and eliminate the signal flow that unit 104 sends, determine the scrambler sequence of coupling according to trainingization sequence in this signal flow after, burst time slot data in the signal flow are carried out descrambling and despreading processing, generate the data of each code channel, and the data of each code channel are sent;
With reference to code channel signal recovery unit 106, be used to receive and the data of each code channel of demodulation after, obtain continuous binary bit stream, and this bit stream modulated form I, Q and send after with reference to the code channel signal flow;
Further, with reference to code channel signal recovery unit 106, also be used for the continuous binary bit stream of obtaining is sent to the physical layer of base station.
IQ is with reference to HSUPA signal recovery unit 107, be used to receive the I, the Q that send with reference to code channel signal recovery unit 106 with reference to the code channel signal flow after, carry out spread spectrum, scrambling, shaping filter and handle and form I, Q and be sent to modulation domain measurement unit 108 after with reference to the HSUPA baseband signal streams;
Modulation domain measurement unit 108 is used for the performance number with reference to HSUPA signal recovery unit 107 and frequency error computing and elimination unit 104 transmission signals based on IQ, error of calculation amplitude of the vector value;
Sign indicating number domain measurement unit 109 is used for based on frequency error computing and eliminates unit 104, signal descrambling and de-spreading unit 105 and send the performance number of signals with reference to code channel signal recovery unit 106, calculates code domain power value and peak code territory performance number.
Concrete, I, Q that above-mentioned modulation domain measurement unit 108 sends with reference to HSUPA signal recovery unit 107 according to IQ obtain the performance number of reference signal with reference to the HSUPA baseband signal streams; I, Q two-way baseband signal streams according to frequency error computing and 104 transmissions of elimination unit, obtain the performance number of measuring-signal, utilize formula: RMS (measured signal power value-reference signal power value)/RMS (reference signal power value) * 100%, error of calculation amplitude of the vector.
Sign indicating number domain measurement unit 109 is according to frequency error computing and eliminate unit 104 adjusted I, Q two-way baseband signal streams, obtains the performance number of measuring-signal; The data of each code channel that sends according to signal descrambling and de-spreading unit 105 obtain the performance number of each code channel and the I, the Q that send according to reference code channel signal recovery unit 106 with reference to the code channel signal flow, obtain with reference to code channel signal power value,
Utilize formula: 10log (performance number of each code channel performance number/measuring-signal) dB, calculate code domain power;
Utilize formula: 10log ((code channel maximum power value)
2/ (RMS (with reference to code channel signal power value))
2), calculate the peak value code domain power.
Device provided by the invention is in conjunction with TD-HSUPA terminal test environment, by setting up suitable test analysis model, realize finishing quickly and accurately the frequency error of TD-HSUPA terminal upward signal, phase error, Error Vector Magnitude, code domain power, the isoparametric measurement of peak value code domain power, the quality of multianalysis TD-HSUPA terminal upward signal provides accurate data stream for simultaneously the base station physical layer decoder.Device provided by the invention is applicable to the modulation domain and a sign indicating number territory testing performance index in the processes such as research and development, design, manufacturing, service, maintenance and authentication of TD-HSUPA terminal.
Elaborate the concrete analysis measuring process of TD-HSUPA signal quality analysis measuring device provided by the invention below by a preferred embodiment.
In the embodiment of the invention to the analysis of TD-HSUPA quality of signals and measuring process be by utilize the power-up ramp method of synchronization and training sequence constitute the sliding window method of synchronization combine finish the TD-HSUPA signal fast synchronously; Finish frequency error measurement and elimination by the phase analysis mode; Hint obliquely at the primary signal recovery that method is finished the 16QAM signal by FIR (Finite ImpulseResponse, finite impulse response) filtering and 16QAM modulation signal; Can calculate the modulation domain measurement parameter fast by primary signal and the measuring-signal that restores, mainly comprise the calculating of Error Vector Magnitude; By the contrast of complex value reference signal and complex value measuring-signal, measure the correlated performance index in sign indicating number territory again, this index comprises that mainly code channel power measurement, code domain power are measured, peak code territory power measurement.By above-mentioned measurement means, the device that the embodiment of the invention provides is not only sent to high-quality, low bit error ground restituted signal to the base station physical layer, also measures the frequency error and the Error Vector Magnitude of TD-HSUPA signal.
Concrete, the TD-HSUPA signal quality analysis measuring device that the embodiment of the invention provides, as shown in Figure 2, mainly comprise: converter unit 201, measuring-signal data acquisition unit 202, DDC converter unit 203, time slot synchronization unit 204, frequency error computing and elimination unit 205, signal descrambling and de-spreading unit 206, signal demodulation unit 207, IQ with reference to code channel signal recovery unit 208, IQ with reference to HSUPA signal recovery unit 209, modulation domain measurement unit 210 and sign indicating number domain measurement unit 211.Wherein, converter unit 201 and measuring-signal data acquisition unit 202 have been finished the function of measuring-signal receiving element 101 jointly; Signal demodulation unit 207 and IQ finish function with reference to code channel signal recovery unit 106 jointly with reference to code channel signal recovery unit 208.Concrete:
Wherein, the TD-HSUPA radiofrequency signal that receives is generally 10087 frequencies, is the Low Medium Frequency TD-HSUPA signal of 96MHz by down-converted.
Measuring-signal data acquisition unit 202, the Low Medium Frequency TD-HSUPA that converter unit 201 carries out after the down-converted is signal digitalized, and the digital signal after the digitized processing is sent to DDC converter unit 203;
Wherein, above-mentioned digitized process sampling clock is the integral multiple of the spreading rate of TD-HSUPA signal, and when this integral multiple was 60, sampling clock was spreading rate * 60 of 76.8MHz=TD-HSUPA signal; Wherein the spreading rate of TD-HSUPA signal is 1.28Mbps.
Time slot synchronization unit 204, receive I, Q two-way baseband signal streams that DDC converter unit 203 sends, change the rising edge that produces by time slot power, the preliminary time slot original position of determining I, Q two-way baseband signal streams, carry out correlation peak detection by the trainingization sequence again, determine the position of the training sequence of I, Q two-way baseband signal streams, and the I after will handling, Q two-way baseband signal streams are sent to frequency error computing and eliminate unit 205; Wherein, the position of determining time slot original position and trainingization sequence is in order accurately to obtain TD-HSUPA ascending time slot data flow;
Frequency error computing and elimination unit 205, I, Q two-way baseband signal streams that receiving slot lock unit 204 sends, training sequence to I, Q two-way baseband signal streams is carried out the phase bit arithmetic, obtains the phase place of trainingization sequence, and according to the deviation and the start-phase of this phase calculation carrier frequency; Then, according to carrier deviation and the start-phase calculated, adjust the phase information of I, Q two-way baseband signal streams, amplitude information remains unchanged, and adjusted I, Q two-way baseband signal streams are sent to signal descrambling and de-spreading unit 206, modulation domain measurement unit 210 and sign indicating number domain measurement unit 211; Wherein, the adjusted I of process, Q two-way baseband signal streams comprise the burst time slot data and the trainingization sequence of TD-HSUPA signal, and wherein, the structure of burst time slot data as shown in Figure 3;
Signal descrambling and de-spreading unit 206, receiver frequency error calculates and eliminates I, the Q two-way baseband signal streams that unit 205 sends, determine the scrambler sequence of coupling according to training sequence wherein, again burst time slot data are carried out descrambling and despreading processing, generate the data of each code channel, and the data of each code channel are sent to signal demodulation unit 207 and sign indicating number domain measurement unit 211;
IQ is with reference to code channel signal recovery unit 208, the continuous binary bit stream that receiving signal demodulation unit 207 sends, this continuous binary bit stream is carried out QPSK or 16QAM modulation, form I, Q with reference to the code channel signal flow, and I, Q are sent to IQ with reference to HSUPA signal recovery unit 209 with reference to the code channel signal flow;
IQ is with reference to HSUPA signal recovery unit 209, receive I, Q that IQ sends with reference to code channel signal recovery unit 208 with reference to the code channel signal flow, I, Q are carried out respectively after spread spectrum, scrambling, shaping filter handle with reference to the code channel signal flow, form I, Q with reference to the HSUPA baseband signal, and I, Q are sent in modulation domain measurement unit 210 with reference to the HSUPA baseband signal;
Modulation domain measurement unit 210 receives I, Q that IQ sends with reference to HSUPA signal recovery unit 209 with reference to the HSUPA baseband signal, obtains the performance number of this reference signal; Receiver frequency error calculates and eliminates I, the Q two-way baseband signal streams that unit 205 sends, obtain the performance number of this baseband signal streams, be the performance number of measuring-signal, utilize formula RMS (performance number of the performance number-reference signal of measuring-signal)/RMS (performance number of reference signal) * 100% error of calculation amplitude of the vector.
Sign indicating number domain measurement unit 211, receiver frequency error calculates and eliminates I, the Q two-way baseband signal streams that unit 205 sends, and obtains the performance number of this baseband signal streams, i.e. the performance number of measuring-signal; The data of each code channel that received signal descrambling and de-spreading unit 206 sends are obtained the performance number of each code channel data and are received I, Q that IQ sends with reference to code channel signal recovery unit 208 with reference to the code channel signal flow, obtain with reference to code channel signal power value,
Utilize formula: 10log (each code channel performance number/total power value) dB, calculate code domain power;
Utilize formula: 10log ((code channel maximum power value)
2/ (RMS (with reference to code channel signal power value))
2) calculating peak value code domain power.
The device that the embodiment of the invention provides is in conjunction with TD-HSUPA terminal test environment, by setting up suitable test analysis model, realize finishing quickly and accurately the frequency error of TD-HSUPA terminal upward signal, phase error, Error Vector Magnitude, code domain power, the isoparametric measurement of peak value code domain power, the quality of multianalysis TD-HSUPA terminal upward signal provides accurate data stream for simultaneously the base station physical layer decoder.Device provided by the invention is applicable to the modulation domain and a sign indicating number territory testing performance index in the processes such as research and development, design, manufacturing, service, maintenance and authentication of TD-HSUPA terminal.
The present invention also provides a kind of TD-HSUPA signal quality analysis measurement method, as shown in Figure 4, may further comprise the steps:
The TD-HSUPA measuring-signal that step S401, measuring-signal receiving element receiving terminal send, and this measuring-signal carried out being sent to the DDC converter unit after down-conversion, the digitized processing.
Measuring-signal after step S402, DDC converter unit are handled the measuring-signal receiving element carries out being sent to time slot synchronization unit after quadrature demodulation, filtering extraction and shaping filter are handled formation I, Q two-way baseband signal streams.
Step S403, time slot synchronization unit receive I, Q two-way baseband signal streams, determine to send it to frequency error computing and elimination unit behind the time slot original position of this signal flow and the trainingization sequence location.
I, Q two-way baseband signal streams that step S404, frequency error computing and elimination unit receiving slot lock unit send, the phase place of trainingization sequence in the signal calculated stream sends adjusted signal flow adjust the phase place of described signal flow according to result of calculation after; Wherein, adjusted signal flow comprises the burst time slot data and the trainingization sequence of TD-HSUPA measuring-signal.
Step S405, signal descrambling and de-spreading unit receiver frequency error calculate and eliminate the signal flow that the unit sends, based on trainingization sequence in this signal flow the burst time slot data in this signal flow are carried out descrambling and despreading processing, generate the data of each code channel, and the data of each code channel are sent.
Step S406, with reference to code channel signal recovery unit receive and the data of each code channel of demodulation after, obtain continuous binary bit stream, and this bit stream modulated form I, Q and send after with reference to the code channel signal flow.
Step S407, sign indicating number domain measurement unit are based on frequency error computing and eliminate unit, signal descrambling and de-spreading unit and send the performance number of signal with reference to code channel signal recovery unit, calculate code domain power value and peak code territory performance number.
Step S408, IQ receive the I, the Q that send with reference to code channel signal recovery unit with reference to the code channel signal flow with reference to HSUPA signal recovery unit, carry out spread spectrum, scrambling, shaping filter and handle and form I, Q and be sent to the modulation domain measurement unit after with reference to the HSUPA baseband signal streams.
Step S409, modulation domain measurement unit are based on the performance number of IQ with reference to HSUPA signal recovery unit and frequency error computing and elimination unit transmission signal, error of calculation amplitude of the vector value.
Wherein, after reference code channel signal recovery unit obtains continuous binary bit stream, the bit stream that obtains is sent to the physical layer of base station among the above-mentioned steps S406.
Concrete, among the step S407, sign indicating number domain measurement unit is according to described frequency error computing and eliminate the adjusted I in unit, Q two-way baseband signal streams, obtains the performance number of measuring-signal; The data of each code channel that sends according to signal descrambling and de-spreading unit obtain the performance number of each code channel and the I, the Q that send according to reference code channel signal recovery unit with reference to the code channel signal flow, obtain with reference to code channel signal power value,
Utilize formula: 10log (performance number of each code channel performance number/measuring-signal) dB, calculate code domain power;
Utilize formula: 10log ((code channel maximum power value)
2/ (RMS (with reference to code channel signal power value))
2), calculate the peak value code domain power.
Among the step S409, I, Q that the modulation domain measurement unit sends with reference to HSUPA signal recovery unit according to IQ obtain the performance number of reference signal with reference to the HSUPA baseband signal streams; According to I, the Q two-way baseband signal streams of frequency error computing and the transmission of elimination unit, obtain the performance number of measuring-signal, utilize formula:
RMS (measured signal power value-reference signal power value)/RMS (reference signal power value) * 100%, error of calculation amplitude of the vector.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (10)
1, a kind of TD-HSUPA signal quality analysis measuring device is characterized in that, comprising:
The measuring-signal receiving element is used for the TD-HSUPA measuring-signal that receiving terminal sends, and this measuring-signal is carried out being sent to the DDC converter unit after down-conversion, the digitized processing;
The DDC converter unit is used for the measuring-signal after the described measuring-signal receiving element processing is carried out being sent to time slot synchronization unit after digital quadrature demodulation, filtering extraction and shaping filter are handled formation I, Q two-way baseband signal streams;
Time slot synchronization unit is used to receive described I, Q two-way baseband signal streams, determines to send it to frequency error computing and elimination unit behind the time slot original position of this signal flow and the trainingization sequence location;
Frequency error computing and elimination unit, be used to receive I, the Q two-way baseband signal streams that described time slot synchronization unit sends, calculate the phase place of trainingization sequence in the described signal flow, adjusted signal flow is sent adjust the phase place of described signal flow according to result of calculation after; Described adjusted signal flow comprises the burst time slot data and the trainingization sequence of TD-HSUPA measuring-signal;
Signal descrambling and de-spreading unit, be used to receive described frequency error computing and eliminate the signal flow that the unit sends, determine the scrambler sequence of coupling according to trainingization sequence in this signal flow after, burst time slot data in the described signal flow are carried out descrambling and despreading processing, generate the data of each code channel, and the data of each code channel are sent;
With reference to code channel signal recovery unit, be used to receive and the data of described each code channel of demodulation after, obtain continuous binary bit stream, and this bit stream modulated form I, Q and send after with reference to the code channel signal flow;
IQ is with reference to HSUPA signal recovery unit, be used to receive described I, the Q that sends with reference to code channel signal recovery unit with reference to the code channel signal flow, carry out spread spectrum, scrambling, shaping filter and handle and form I, Q and be sent to the modulation domain measurement unit after with reference to the HSUPA baseband signal streams;
The modulation domain measurement unit is used for the performance number with reference to HSUPA signal recovery unit and frequency error computing and elimination unit transmission signal based on described IQ, error of calculation amplitude of the vector value;
Sign indicating number domain measurement unit is used for based on frequency error computing and eliminates unit, signal descrambling and de-spreading unit and send the performance number of signal with reference to code channel signal recovery unit, calculates code domain power value and peak code territory performance number.
2, device as claimed in claim 1 is characterized in that,
The TD-HSUPA measuring-signal that described measuring-signal receiving element receiving terminal sends, after this signal down-converted to intermediate-freuqncy signal, this intermediate-freuqncy signal is carried out digitized processing, and the sampling clock that described digitized processing adopted is the integral multiple of described TD-HSUPA measuring-signal spreading rate.
3, device as claimed in claim 1 is characterized in that,
After described time slot synchronization unit receives described I, Q two-way baseband signal streams, change the time slot original position that the rising edge that produces is determined described signal flow by described signal flow time slot power, carry out peak value by the training sequence in the described signal flow and detect, determine the training sequence location of described signal flow.
4, device as claimed in claim 1 is characterized in that,
Described frequency error computing and eliminate the unit and receive I that described time slot synchronization unit sends, Q two-way baseband signal streams after, calculate the phase place of trainingization sequence in the described signal flow, deviation and start-phase by the phase calculation carrier frequency that calculates, and the phase place of adjusting described signal flow according to the deviation and the start-phase of described carrier frequency, amplitude information remains unchanged.
5, device as claimed in claim 1 is characterized in that,
Described with reference to code channel signal recovery unit, also be used for the continuous binary bit stream of obtaining is sent to the physical layer of base station.
6, device as claimed in claim 1 is characterized in that,
I, Q that described modulation domain measurement unit sends with reference to HSUPA signal recovery unit according to described IQ obtain the performance number of reference signal with reference to the HSUPA baseband signal streams; According to I, the Q two-way baseband signal streams of described frequency error computing and the transmission of elimination unit, obtain the performance number of measuring-signal, utilize formula:
RMS (measured signal power value-reference signal power value)/RMS (reference signal power value) * 100%, error of calculation amplitude of the vector.
7, device as claimed in claim 1 is characterized in that,
Described sign indicating number domain measurement unit is according to described frequency error computing and eliminate the adjusted I in unit, Q two-way baseband signal streams, obtains the performance number of measuring-signal; The data of each code channel that sends according to described signal descrambling and de-spreading unit obtain the performance number of each code channel and according to described I, the Q that sends with reference to code channel signal recovery unit with reference to the code channel signal flow, obtain with reference to code channel signal power value,
Utilize formula: 10log (performance number of each code channel performance number/measuring-signal) dB, calculate code domain power;
Utilize formula: 10log ((code channel maximum power value)
2/ (RMS (with reference to code channel signal power value))
2), calculate the peak value code domain power.
8, a kind of TD-HSUPA signal quality analysis measurement method of device according to claim 1 is characterized in that, comprising:
The TD-HSUPA measuring-signal that step 1, measuring-signal receiving element receiving terminal send, and this measuring-signal carried out being sent to the DDC converter unit after down-conversion, the digitized processing;
Measuring-signal after step 2, DDC converter unit are handled described measuring-signal receiving element carries out being sent to time slot synchronization unit after digital quadrature demodulation, filtering extraction and shaping filter are handled formation I, Q two-way baseband signal streams;
Step 3, time slot synchronization unit receive described I, Q two-way baseband signal streams, determine to send it to frequency error computing and elimination unit behind the time slot original position of this signal flow and the trainingization sequence location;
Step 4, frequency error computing and elimination unit receive I, the Q two-way baseband signal streams that described time slot synchronization unit sends, calculate the phase place of trainingization sequence in the described signal flow, adjusted signal flow is sent adjust the phase place of described signal flow according to result of calculation after; Described adjusted signal flow comprises the burst time slot data and the trainingization sequence of TD-HSUPA measuring-signal;
Step 5, signal descrambling and de-spreading unit receive described frequency error computing and eliminate the signal flow that the unit sends, determine the scrambler sequence of coupling according to trainingization sequence in this signal flow after, burst time slot data in the described signal flow are carried out descrambling and despreading processing, generate the data of each code channel, and the data of each code channel are sent;
Step 6, with reference to code channel signal recovery unit receive and the data of described each code channel of demodulation after, obtain continuous binary bit stream, and this bit stream modulated form I, Q and send after with reference to the code channel signal flow;
Step 7, sign indicating number domain measurement unit are based on frequency error computing and eliminate unit, signal descrambling and de-spreading unit and send the performance number of signal with reference to code channel signal recovery unit, calculate code domain power value and peak code territory performance number;
Step 8, IQ receive described I, the Q that sends with reference to code channel signal recovery unit with reference to the code channel signal flow with reference to HSUPA signal recovery unit, carry out spread spectrum, scrambling, shaping filter and handle and form I, Q and be sent to the modulation domain measurement unit after with reference to the HSUPA baseband signal streams;
Step 9, modulation domain measurement unit are based on the performance number of described IQ with reference to HSUPA signal recovery unit and frequency error computing and elimination unit transmission signal, error of calculation amplitude of the vector value.
9, method as claimed in claim 7 is characterized in that, described step 6 also comprises:
Described obtain continuous binary bit stream with reference to code channel signal recovery unit after, the bit stream that obtains is sent to the physical layer of base station.
10, method as claimed in claim 7 is characterized in that,
Described modulation domain measurement unit by using formula: RMS (measured signal power value-reference signal power value)/RMS (reference signal power value) * 100%, error of calculation amplitude of the vector;
Described sign indicating number domain measurement unit by using formula: 10log (performance number of each code channel performance number/measuring-signal) dB, calculate code domain power; Described sign indicating number domain measurement unit by using formula: 10log ((code channel maximum power value)
2/ (RMS (with reference to code channel signal power value))
2), calculate the peak value code domain power.
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| CN2009101622699A CN101605004B (en) | 2009-07-31 | 2009-07-31 | Device and method for analyzing and measuring quality of TD-HSUPA signals |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102377499A (en) * | 2011-11-14 | 2012-03-14 | 深圳市海思半导体有限公司 | Digital signal error vector magnitude testing method, digital signal error vector magnitude testing device and digital signal error vector magnitude testing system |
| CN103813438A (en) * | 2014-02-21 | 2014-05-21 | 京信通信系统（中国）有限公司 | Slot time synchronization method, device and base station |
| CN108462539A (en) * | 2018-02-09 | 2018-08-28 | 海能达通信股份有限公司 | Means for anti-jamming, method, communication terminal and the storage medium of communication terminal |
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2009
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102377499A (en) * | 2011-11-14 | 2012-03-14 | 深圳市海思半导体有限公司 | Digital signal error vector magnitude testing method, digital signal error vector magnitude testing device and digital signal error vector magnitude testing system |
| CN103813438A (en) * | 2014-02-21 | 2014-05-21 | 京信通信系统（中国）有限公司 | Slot time synchronization method, device and base station |
| CN108462539A (en) * | 2018-02-09 | 2018-08-28 | 海能达通信股份有限公司 | Means for anti-jamming, method, communication terminal and the storage medium of communication terminal |
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| CN101605004B (en) | 2012-07-18 |
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