TH42528B - Methods and equipment for generating frame-structured signals And methods and equipment for frame synchronization. - Google Patents

Abstract

DC60 (03/10/57) Method for generating frame-structured signals. Each frame of such a frame structure consists of at least One helpful symbol (12) during the control period (14) related to at least one symbol Helpful (12) and reference symbols (16) consist of steps. of the operation Modulate the amplitude of the bit sequence so that the frame Modified bit sequence wave late amplitude defines the reference format of reference symbols (16). Methods for Synchronize the frame of The signal structure is such a frame. It consists of the procedure of receiving signal, down-conversion of the received signal. Perform (164) amplitude demodulation of the down-converted signal to construct the waveframe. Correlation (166) waveframe is also performed. Pre-defined reference patterns to detect images. The signal reference form of the reference symbol (16) in the signal and the synchronization is performed. Frames based on signal reference pattern detection A method for generating frame-structured signals. that is, such a frame consists of at least One helpful symbol (12) range (14) associated with at least one symbol. Useful (12) and reference symbols (16) contain steps of action. Modulate the amplitude of the bit sequence so that the frame The amplitude modulated bit sequence wave It defines the reference format of reference symbols (16). Methods for synchronizing frames of The signal structure is such a frame. It consists of the steps of receiving the signal. Down-conversion of the received signal performed (164) Demodulation of the amplitude of the received signal. Convert down to construct a wave frame. Correlate (166) a wave frame with a pattern. Predefined references to detect images. The signal reference model of the reference symbol (16) in the signal and synchronization is performed. Frames based on pattern detection reference of the signal

Claims (6)

1. A method for generating a frame structured signal. Each frame of the aforementioned frame structure consists of At least one helpful symbol (12) during the control period (14) related to It involves at least one such useful symbol (12) and reference symbol (16). The amplitude modulated bit sequence is defined. Reference form of the aforementioned reference symbol (16) 2. Claim 1 method in which the signal multiplexes perpendicular frequency divider 3. The method according to claim 1 or 2, which Such amplitude modulation is performed at the middle amplitude of Such reference symbol (16) corresponds to the middle amplitude. the remaining channels 4. Method for generating multi-modulated signal with a frame structure Each frame of the frame structure Such that contains at least one useful symbol (12) a range (14) associated with at least one symbol. (12) and reference symbols (16). Formation of bit bars (104) Comparing the bits of such bit bars (104) with carriers to arrange Do a spectrum of sequence (108). Perform inverse Fourier transform (110) to produce notation. Multiple modulated carriers (112) are linked (114). is modulated by multiple carriers Such reference symbols (16) are constructed by performing the amplitude modulation of the bit sequence so that the waveframe of the sequence The amplitude modulated bit determines the reference format of the symbol. Such reference and associate (116) the reference symbol (16) with a pre-defined number of modulated symbols. Multiple carriers and associated ranges to define such frames. 5. Claims 4 method in which multiple modulated signals Such pahs are perpendicular frequency multiplexing signals. 6. Method according to claim 4 or 5, which one of the modulation Such amplitude latitude is performed at the middle amplitude of Such reference symbol (16) corresponds to the middle amplitude. of the residual carrier modulated signal 7. Method according to claims 1 to 6, one of the bit sequences This is a pseudorandom bit sequence with good correlation characteristics. of useful symbols (12) in each frame are assigned It depends on the signal properties of the channel (122), through which a multi-modulated signal or signal is transmitted. 9. Methods for synchronizing frames of a frame-structured signal. Each frame of such frame-structured signal is comprising at least one helpful symbol (12) a control interval (14) associated with at least one such helpful symbol (12) and reference symbol (16). receiving such signals The down-conversion of the received signal is performed (164). Convert it to create a wave frame. Correlate (166) such waveforms with each other. Predefined references to detect reference patterns of signal of such reference symbol (16) in such signal and perform frame synchronization on the basis of monitoring. The capture of the reference pattern of the above signal 1 0. Claim Method 9 that consists of subsequent steps of Performs a quick automatic gain control (162) of the received down-converted signal before the operation step. Demodulation of such amplitude (164) 1 1. Method pursuant to claim 9 or 10 in which the procedure of the operation (164) such amplitude demodulation It consists of the procedure for calculating the alitude of the signal. by using Alpha Max + Beta Min 1 2. Method according to Claim 9 or 10, whichever Subsequently, with each step of sampling the amplitude of the signal, that was converted into such obtained and compared the amplitude that was Take such samples with pre-defined boundaries to arrange Create bit sequences to perform such amplitude demodulation 1. 3. Claim 12 method in which the sampling procedure Each amplitude of the converted signal is Subsequently, with the procedure of over-sampling of The converted signal received as mentioned 1. Subsequently, with the process of applying the effect of frame synchronization for frames in that signal with at least frames. Next, frame one of the above signals 1. 5.Method for frame synchronization of modulated signals. Multiple carriers with frame structures each of the structures that is such a frame that contains at least one useful symbol (12) a control interval (14) associated with at least one useful symbol (12) and reference symbol (16). Receiving multiple modulated signals such carriers The down-conversion of the received multi-modulated carrier signal is performed (164). are modulated by several such transformed carriers to form a correlation (166) waveframe. Predefined references to detect reference patterns of such reference symbols in a multi-modulated signal such carrier Perform such frame synchronization on the basis of detection of the reference pattern of such a signal, the separation (136/138), the reference symbol (16) and at least one such control range (14) from the signal being Multiple modulation carriers are obtained, which are converted thereon on the basis of Of such frame synchronization, perform (140) Fourier transforms to produce a sequence of specs. from at least one of those helpful symbols. Separating the sequence of such spectra to produce bit band 1 A fast automatic gain control operation (162) of the received multi-modulated carrier signal is converted thereby. Prior to the amplitude demodulation procedure as mentioned, 1 7. Any method under Claims 15 or 16 which steps The section in which the amplitude modulation step (164) consists of the amplitude computation step. of the aforementioned multi-modulated signal using the alpha max + beta min 1 method. Subsequently, with the process of sampling and signal amplitude. that is a multi-modulated carrier which is converted thereto and Compare such sampled amplitude to the extent that pre-defined to generate bit sequences to perform such amplitude demo-dulation 1 9. Claim 18 method in which the sampling procedure Each amplitude of a signal modulated by multiple carriers The aforementioned conversion was subsequently composed of the steps of Oversampling operation of multiple modulated signals The converted carrier is obtained 2 0.A method pursuant to Claims 15 to 19 which comprises Subsequently, with the application of the synchronization effect. a frame in that signal with at least one of the next frames in the The multi-modulated carrier signal 2 1. Any method of claims 9 to 20 consists of Next comes the step of detecting the position of the reference pattern. of such signals on the basis of the occurrence of a maximum The correlation signal when correlating the waveframe with the figure The pre-defined reference form 2 2. Claim 21 method which is subsequently incorporated by the procedure of The weighting of the maximum value of the correlation signal. where the highest occurring first is weighted more. The next highest occurrence and the detection of that position of the signal reference pattern. 2 3. Claim method 22, which is accompanied by the procedure of Claim 22. The suspension of the frame synchronization process is as follows. said for a pre-determined time from when the receiver is turned off (130). To synchronize frames 2. 4.Device for generating a frame-structured signal. Each frame of such frame-structure at comprising at least one useful symbol (12) a control range (14) associated with at least one such helpful symbol (12) and a reference symbol (14). An amplitude modulator for performing amplitude modulation. Bit sequence where the amplitude modulated bit sequence waveforms. Determine the reference format of the said reference symbol. (16) 2 5. Equipment according to claim 24 which the signal is a signal. Perpendicular frequency multiplexes 2 6. Any device pursuant to Claim 24 or 25 which The middle amplitude of the reference symbol (16) corresponds to the middle amplitude of the remaining signal. Frame-structured carriers each frame of the structure That is such a frame that contains at least one symbol. useful (12) period of control (14) related to At least one useful symbol (12) and reference symbol (16). Weaving tool for creating bit bands (104) Tool for comparing bits of such bands (104) with carriers to form a spectral sequence (108) Tool (110) for performing inverse Fourier transform. To produce multiple modulated symbols (112), tool (114) for linking control ranges to each Multiple modulated symbols carry The tool for generating such a reference symbol (16) contains an amplitude modulator for performing the amplitude-modulation of a bit sequence by providing a waveframe of the modulated bit sequence. - the latitude determines the reference format of such reference symbol (16) and the instrument (116) for linking such reference symbol (16) to a pre-defined number; of the multi-modulated symbol (12) and the associated control range (14) to define the frame. Many of these carriers are frequency multiplexing signals, perpendicular to 2. 9. Devices pursuant to either claim 26 or 27. The tool for constructing such reference symbols (16) performs amplitude modulation by giving the symbol's middle amplitude. Such reference (16) corresponds to the central amplitude of the signal. that is multiple modulated carriers above 3 0.Equipment under Claims 24 to 29, one of which Such a tool for generating such reference symbols (16) generates pseudo-random bit sequences with correlation characteristics. as good as the aforementioned bit sequences 3. 1. Devices according to claims 24 to 30, which Contains a tool for finding the number of useful symbols (12). Each frame is determined based on Channel properties of the channel (122) through which the signal or a signal that is modulated by multiple pars is relayed 3 2. Device for synchronizing the frame of a structured signal. is each frame of the structure that is such a frame that Contain at least one useful symbol (12). A range (14) is associated with at least one symbol that is Useful symbols (12) and reference symbols (16) such equipment contains the receiver procedure (150) for receiving such signals. A transducer for converting such a received signal An amplitude demodulator (164) for performing the amplitude demodulation of the converted signal to create Waveframe Correlation factor (166( for waveframe correlation) such with a predefined reference pattern to detect The reference format of the reference symbol (16) in the signal and the tool for performing frame synchronization. Based on the detection of the aforementioned signal reference scheme, 3 3. Claim 32 device, attached to the device (162), for the implementation of fast automatic gain control (162) of the pranked signal. that received it into the device Such amplitude demodulation (164) 3 4. Any device pursuant to Claim 31 or 33 which Such amplitude demodulators (164) consist of A hand for calculating the amplitude of such signal using the alpha max+beta min method 3. It is subsequently equipped with a sampling device for each amplitude. of such a converted signal received where the amplitude demodulator (164) contains an instrument for comparing Compare the amplitude that was sampled to the specified boundary. in advance to create a bit sequence 3. 6. The device according to claim 35, which such tool The sampler consists of an apparatus for taking an excess of the sample. The signal is converted into such received 3. 7. The equipment under Claims 32 to 36, one of which Later, there are tools for applying the results of Synchronize frames for frames in that signal with at least The next frame is one of such signals. 3 8.Device for synchronizing the frame of the modulated signal. Multiple carriers with frame structures each frame of the frame Create that is such a frame that contains at least one sample. Useful symbols (12) control intervals (14) related with at least one of those (12) useful symbols and reference symbols. (16) Such equipment consists of a receiver (150) for receiving multiple modulated signals. such carrier Down converter for down conversion of the signal being modulated by multiple carriers to obtain such Amplitude demodulator (164) for performing the amplitude demodulation of the converted multi-modulated carrier signal. such to create a wave frame The waveframe correlation factor enters the reference pattern. preset to detect the reference pattern of the signal of Such reference symbol (16) in the modulated signal. Many such carriers A tool for performing such frame synchronization on Based on the detection of the reference pattern of such a signal, a separator (136/138) is for extracting such reference symbol (16) and at least one such control range (14) from a multiple modulated signal. The Pah received, which was converted into said on the basis of such frame synchronization to create At least one such useful symbol Tool (140) for performing Fourier transforms. to make a spectral sequence from at least a symbol that is One such utility and tool (142) for sequencing spectral sequences. It is issued for the preparation of tab 3. 9. Device according to Claim 38, which is attached to the device (162) for the automatic gain control of the The speed of the signal that is modulated with multiple carriers which is converted down received. (164) 4 0. Any device under claim 38 or 39, which Such amplitude demodulation (164) consists of an apparatus. For calculating the amplitude of a multi-modulated signal. which is converted into the aforementioned obtained using alpha max+beta min- 4. 1. Equipment according to claim 38 or 39, which one It is subsequently equipped with a sampling device for each amplitude. of the modulated signal which is converted into such receiver where The amplitude demodulator (164) consists of a machine for Compare such sampled amplitude to the extent that predefined to generate bit sequence 4 2. Equipment according to claim 41, which such equipment for Sampling consists of an over-sampling apparatus of A multi-modulated signal is converted into 4 aforementioned received. 3. Equipment according to claims 38 to 42, one of which Continuing with the tools for applying the results of Frame synchronization for frames in multiple modulated signals. Such carriers with at least one of the next frames in the signal. that is multiple modulated carriers 4 4. Equipment according to claims 32 to 43, which Next comes the tool for checking the position of the pattern. Reference of such signals on the basis of occurrence of the maximum value of The correlation signal from the aforementioned correlation (166) 4 5. Equipment according to claim 44, which is subsequently assembled with the machine. A hand for weighting the highest number of correlation signals. The highest value that occurs first is weighed down. heavier than the next highest value, and the detection of such a reference pattern of the signal 4 6. Equipment according to claim 45, which is subsequently assembled with the machine. Hands for suspending operation of tools for processing Synchronize such frames at pre-defined intervals. After turning on the receiver (130) containing Frame synchronization device (46 clauses, drawings - pictures)