Method for detecting uwb pulse sequences and detection means suitable for this purpose
A pulse and detection value technology, applied in the field of detection of ultra-wideband pulse sequences and detection devices, can solve the problems of signal disappearance, adverse effect on result accuracy, etc.
Inactive Publication Date: 2005-02-23
MITSUBISHI ELECTRIC CORP
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[0007] It should be noted that during the considerable time required to perform pulse train detection according to the techniques described above, the communication conditions between the transmitter and receiver may change, i.e. the communication channel between these devices may change, for example due to Or changes caused by movement of one of them, so that detection conditions may change during a single signal detection step, such that said signal detection step may adversely affect the accuracy of the results produced
Signals carrying pulse trains may even disappear before detection is complete
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[0036] Figure 1 depicts a telecommunication system SYST incorporating the present invention. The system SYST comprises at least one transmitting device TRD and one receiving device RCD, which can be formed, for example, by a mobile telephone. The transmitting device TRD is adapted to transmit, during Np time windows, a signal Csg consisting of a sequence of at least Np pulses pj (j=1 to Np), each pulse being contained within a time segment at its associated time The position in the window is defined by the slice number cj (j=1 to Np).
[0037] The receiver REC has a detection means DET for detecting this input signal Csg.
[0038] The signal Csg may constitute a carrier signal on which the transmitting device TRD may encode the signal by modulating said carrier signal Csg, for example by performing a phase or amplitude modulation of one or more pulse sequences.
[0039] Accompanying drawing 2 depicts such a carrier signal Csg in the form of a timing diagram, according to whi...
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The present invention relates to a method for transmitting data in the form of at least one sequence of Np pulses over Np time windows Tf, each pulse being enclosed within a time chip Tc whose position whithin its relevant time window is defined by a chip number.The method according to the invention, includes at least one signal detection step, in the course of which Np detection windows Dj (for j=1 to Np) encompassing the time chips defined by the chip numbers are to be examined in search of an expected pulse sequence.The method according to the invention enables to limit the processing time and power needed for carrying out the detection step, which only requires to scan detection windows defined by the signature of a transmitter, instead of mapping the whole pulse sequence.
Description
technical field [0001] The invention relates to a method for transmitting data in a telecommunication system comprising at least one transmitter and a receiver for transmitting a signal consisting of at least one sequence of Np pulses during Np time windows , each pulse described is contained within a time segment whose position within its associated time window is defined by the segment number. Background technique [0002] This method of data transmission is currently being studied for the purpose of estimating its relevance for so-called ultra-wideband telecommunication systems (hereinafter referred to as UWB systems). In such a system, each transmitter can be identified by means of a signature consisting of the above-mentioned segment number, which is itself very robust and can therefore be transmitted reliably and accurately to all potential receivers. [0003] The pulses used in UWB systems are very short, for example having a duration of less than 0.1 nanoseconds, wh...
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IPC IPC(8): H04B1/69
CPCH04B1/7163H04B1/7176
Inventor S·帕凯莱特B·于冈
Owner MITSUBISHI ELECTRIC CORP