Method for radio transmission by ultra wideband transmission

摘要

Message symbols are sent radio transmission using an ultra wideband transmitter emitting a pulse-phase-modulated transmission signal that has isolated pulses, each of which has a time offset in relation to a time pattern, which time offset is dependent on a message symbol that the pulse represents. The transmission signal has a line spectrum having a multiplicity of modulated frequency lines. The transmission signal is received at a receiver, which obtains a narrowband signal from a single one of the modulated frequency lines. The modulated frequency line includes a bandwidth that corresponds to less than twice a pattern frequency of the time pattern. A phase of the narrowband signal is ascertained at predetermined instants and the respectively ascertained phase is associated with one of a plurality of predetermined message symbols.

主权项

1. A method for radio transmission of message symbols by an ultra wideband transmitter emitting a pulse-phase-modulated transmission signal that includes isolated pulses, each pulse having a time offset, in relation to a time pattern, that is dependent on a message symbol that the pulse represents, the pulse-phase-modulated transmission signal having a line spectrum with multiple frequency lines, said method comprising:
receiving the pulse-phase-modulated transmission signal by a receiver; producing, by the receiver, a reference signal having a reference phase; obtaining, by the receiver, a narrowband signal from a modulated frequency line of the line spectrum, the narrowband signal having a bandwidth corresponding to less than twice a pattern frequency of the time pattern; ascertaining, by the receiver at predetermined instants, a phase of the narrowband signal from a sinusoidal signal from a further frequency line of the line spectrum, based on the reference signal; and associating each phase ascertained by the receiver with one of a plurality of predetermined message symbols.