Ultra-wideband communication system for very high data rates
First Claim
1. An ultra-wideband method for communication between a transmitter and a receiver, the method comprisinga pulse forming step on the transmitter side, comprising forming a pulse group from a predetermined number of individual pulses, wherein a duration of the individual pulses is longer than a time spacing between the individual pulses of the pulse group, in such a way that the individual pulses of one and the same pulse group partially overlap in time after the pulse forming step, wherein the pulse forming comprisesa first encoding step on the part of the transmitter, in which the pulse group, is encoded in dependence on values of a random number sequence, anda correlation step on the part of the receiver, in which correlation of a reception signal with a signal pattern is effected,wherein the signal pattern corresponds to the whole pulse group to be expected when using the same values of the random number sequence andwherein, in the first encoding step, the transmitter effects a modulation of the time spacing between individual pulses of the pulse group in dependence on values of the random number sequence or the transmitter effects a modulation of the phase of the individual pulses in dependence on values of the random number sequence.
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Abstract
The invention concerns an ultra-wideband information transmission method comprising a first encoding step on the part of the transmitter, in which a pulse group which is formed from a predetermined number of individual pulses is encoded in dependence on values of a random number sequence, and a correlation step on the part of the receiver in which correlation of a reception signal with a signal pattern is effected, wherein the signal pattern corresponds to the whole pulse group to be expected when using the same values of the random number sequence.
13 Citations
26 Claims
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1. An ultra-wideband method for communication between a transmitter and a receiver, the method comprising
a pulse forming step on the transmitter side, comprising forming a pulse group from a predetermined number of individual pulses, wherein a duration of the individual pulses is longer than a time spacing between the individual pulses of the pulse group, in such a way that the individual pulses of one and the same pulse group partially overlap in time after the pulse forming step, wherein the pulse forming comprises a first encoding step on the part of the transmitter, in which the pulse group, is encoded in dependence on values of a random number sequence, and a correlation step on the part of the receiver, in which correlation of a reception signal with a signal pattern is effected, wherein the signal pattern corresponds to the whole pulse group to be expected when using the same values of the random number sequence and wherein, in the first encoding step, the transmitter effects a modulation of the time spacing between individual pulses of the pulse group in dependence on values of the random number sequence or the transmitter effects a modulation of the phase of the individual pulses in dependence on values of the random number sequence.
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15. An ultra-wideband transmitting apparatus having a pulse group generator comprising
a pulse generator which is adapted to deliver individual pulses at a predeterminable time spacing from each other, a code generator which is adapted to deliver random signals dependent on values of a random number sequence, an encoding unit which is adapted to encode an individual pulse delivered or to be delivered by the pulse generator in dependence on the current random signal, and a control unit which is connected to the pulse generator and which is adapted to actuate the pulse generator at predeterminable moments in time for the delivery of a pulse group with a predetermined number of encoded individual pulses at predetermined time spacings from each other, wherein the control unit is additionally adapted to control the pulse generator and the encoding unit to form the pulse group in dependence on the values of the random number sequence, wherein a duration of the individual pulses is longer than a time spacing between the individual pulses of the pulse group, in such a way that the single-individual pulses of one and the same pulse group overlap in time after the pulse formation, and wherein, in the first encoding step, the transmitter effects a modulation of the time spacing between individual pulses of the pulse croup in dependence on values of the random number sequence or the transmitter effects a modulation of the phase of the individual pulses in dependence on values of the random number sequence.
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20. An ultra-wideband receiving apparatus having a pulse group generator, the pulse group generator comprising
a pulse generator which is adapted to deliver individual pulses at a predeterminable time spacing from each other, a code generator which is adapted to deliver random signals dependent on the values of a random number sequence, a first encoding unit which is adapted to encode an individual pulse delivered or to be delivered by the pulse generator in dependence on the current random signal, and a control unit which is connected to the pulse generator and which is adapted to actuate the pulse generator at predeterminable moments in time for the delivery of at least one signal pattern in the form of a pulse group with a predetermined number of encoded individual pulses at predetermined time spacings from each other, the ultra-wideband receiving apparatus further having a correlation unit, which is connected to the pulse group generator and adapted to deliver an output signal dependent on the correlation of a reception signal with the signal pattern, wherein the control unit is additionally adapted to control the pulse generator and the first encoding unit to form the coded pulse group from a predetermined plurality of single pulses in dependence on the values of the random number sequence in such a way that the single pulses of one and the same pulse group overlap in time after the pulse formation, and wherein, in the first encoding step, the transmitter effects a modulation of the time spacing between individual pulses of the pulse group in dependence on values of the random number sequence or the transmitter effects a modulation of the phase of the individual pulses in dependence on values of the random number sequence.
Specification