US 11,108,596 B2 · Channel estimation of frequency sub bands

Abstract

The invention concerns a method for receiving and a receiver configured to receive a radio signal carrying information, the radio signal including an overall frequency band having a first frequency sub band and a second frequency sub band. The receiver is further configured to receive during a first time period a first portion of the information carried by the radio signal in the first frequency sub band, and to receive during a second time period a second portion of the information carried by the radio signal in the second frequency sub band. The receiver is further configured to perform channel estimation of the first frequency sub band in order to determine a first phase and to perform channel estimation of the second frequency sub band in order to determine a second phase. The receiver is further configured to determine an overall phase basis of the radio signal using the first and second phases.

Claims44

Dependent claims

A receiver configured to receive, by means of a frequency hopping methond, a radio signal carrying information, the radio signal comprising an overall frequency band foverall comprising a first frequency sub band and a second frequency sub band,

wherein the receiver is further configured
to receive during a first time period T1 a first portion of the information carried by the radio signal in the first frequency sub band, and to receive, after a frequency hop and during a second time period T2 a second portion of the information carried by the radio signal in the second frequency sub band,
to perform a channel estimation of the first frequency sub band in order to determine a first channel estimation result and to perform a channel estimation of the second frequency sub band in order to determine a second channel estimation result,
to estimate a relative phase error ΔΦPa,Pb based on the first channel estimation result and the second channel estimation result, and
to determine an overall phase basis of the radio signal under compensation of the relative phase error ΔΦPa,Pb,
wherein the first frequency sub band and the second frequency sub band comprise a spectral overlap in the frequency domain, and
wherein the receiver is configured to superimpose the first channel estimation result and the second channel estimation result within the spectral overlap after determining the overall phase basis of the radio signal from the channel estimates in the spectral overlap.

4 more elements

A receiver configured to receive, by means of a frequency hopping method, predetermined radio signals carrying information, the predetermined radio signals comprising an overall frequency band foverall comprising a first frequency sub band and a second frequency sub band, wherein the receiver is configured to receive at least a spectral portion of a first predetermined radio signal during a first time period T1, and to receive, after a frequency hop, at least a spectral portion of a second predetermined radio signal during a second time to period T2,

wherein the bandwidth of the first predetermined radio signal is larger than the bandwidth of the first frequency sub band and comprises the first frequency sub band, and wherein the bandwidth of the second predetermined radio signal is larger than the bandwidth of the second frequency sub band and comprises the second frequency sub band,
wherein the receiver is configured
to perform a first channel estimation in order to determine a first channel estimation result and to perform a second channel estimation in order to determine a second channel estimation result,
to estimate a relative phase error ΔΦPa,Pb based on the first channel estimation result and the second channel estimation result, and
to determine an overall phase basis of the first and second predetermined radio signals under compensation of the relative phase error ΔΦPa,Pb,
AND
a) wherein the receiver is configured to perform the first channel estimation in a frequency band spectrally covering the first frequency sub band and at least a spectral portion of the first predetermined radio signal located outside the first frequency sub band, and to perform the second channel estimation in a frequency band spectrally covering the second frequency sub band and at least a spectral portion of the second predetermined radio signal located inside the second frequency sub band, wherein said spectral portion of the first predetermined radio signal located outside the first frequency sub band spectrally overlaps with at least a portion of said spectral portion of the second predetermined radio signal located inside the second frequency sub band, and to use the spectrally overlapping spectral portions for determining the overall phase basis
OR
b) wherein the receiver is configured to perform the first channel estimation in a frequency band spectrally covering the first frequency sub band and at least a spectral portion of the first predetermined radio signal located inside the first frequency sub band, and to perform the second channel estimation in a frequency band spectrally covering the second frequency sub band and at least a spectral portion of the second predetermined radio signal located outside the second frequency sub band, wherein said spectral portion of the first predetermined radio signal located inside the first frequency sub band spectrally overlaps with said spectral portion of the second predetermined radio signal located outside the second frequency sub band, and to use the spectrally overlapping spectral portions for determining the overall phase basis,
OR
c) wherein the receiver is configured to perform the first channel estimation in a frequency band spectrally covering the first frequency sub band and a spectral portion of the first predetermined radio signal located inside the first frequency sub band and a spectral portion of the first predetermined radio signal located outside the first frequency sub band, and to perform the second channel estimation in a frequency band spectrally covering the second frequency sub band and a spectral portion of the second predetermined radio signal located outside the second frequency sub band and a spectral portion of the second predetermined radio signal located inside the second frequency sub band, wherein said spectral portion of the first predetermined radio signal located inside the first frequency sub band spectrally overlaps with said spectral portion of the second predetermined radio signal located outside the second frequency sub band, and wherein said spectral portion of the first predetermined radio signal located outside the first frequency sub band spectrally overlaps with said spectral portion of the second predetermined radio signal located inside the second frequency sub band, and to use the spectrally overlapping spectral portions for determining the overall phase basis.

8 more elements

A receiver configured to receive, by means of a frequency hopping methd, predetermined radio signals carrying information, the predetermined radio signals comprising an overall frequency band foverall comprising a first frequency sub band and a second frequency sub band, wherein the receiver is configured

to receive during a first time period T1 at least a spectral portion of a first predetermined radio signal, which spectral portion is located outside the first frequency sub band,
to receive, after a frequency hop and during a second time period T2 a second predetermined radio signal, the second predetermined radio signal being located at least partially inside the second frequency sub band and comprising at least a spectral portion spectrally overlapping with the spectral portion of the first predetermined radio signal,
to perform a first channel estimation within a frequency band spectrally covering the first frequency sub band and the spectral portion of the first predetermined radio signal outside the first frequency sub band,
to perform a second channel estimation within a frequency band spectrally covering the second frequency sub band and the spectral portion of the second predetermined radio signal spectrally overlapping with the spectral portion of the first predetermined radio signal,
to estimate a relative phase error ΔΦPa,Pb based on a channel estimation result of the first channel estimation and on a channel estimation result of the second channel estimation, and
to use the spectrally overlapping spectral portions for determining an overall phase basis of the predetermined radio signal under compensation of the relative phase error ΔΦPa,Pb.

3 more elements

A receiver configured to receive, by means of a frequency hopping method, during a first time period T1 a first frequency sub band and a spectral portion of a second frequency sub band, and to receive, after a frequency hop and during a second time period T2 a second frequency sub band and a spectral portion of the first frequency sub band,

wherein the receiver is configured
to perform a first channel estimation in a frequency band spectrally covering the first frequency sub band and the spectral portion of the second frequency sub band both received during the first time period T1,
to perform a second channel estimation in a frequency band spectrally covering the second frequency sub band and the spectral portion of the first frequency sub band both received during the second time period T2,
wherein the spectral portion of the first frequency sub band received during the second time period T2 spectrally overlaps with a frequency-corresponding spectral portion of the first frequency sub band received during the first time period T1 and/or wherein the spectral portion of the second frequency sub band received during the first time period T1 spectrally overlaps with a frequency-corresponding spectral portion of the second frequency sub band received during the second time period T2,
to estimate a relative phase error ΔΦPa,Pb based on a channel estimation result of the first channel estimation and on a channel estimation result of the second channel estimation, and
to use said spectral overlapping portions of the first and second frequency sub bands for determining an overall phase basis of the predetermined radio signal under compensation of the relative phase error ΔΦPa,Pb.

3 more elements

A method comprising

receiving, by means of a frequency hopping method, predetermined radio signals carrying information, the predetermined radio signals comprising an overall frequency band foverall comprising a first frequency sub band and a second frequency sub band,
receiving at least a spectral portion of a first predetermined radio signal during a first time period T1, and receiving at least a spectral portion of a second predetermined radio signal after a frequency hop and during a second time period T2,
wherein the bandwidth of the first predetermined radio signal is larger than the bandwidth of the first frequency sub band and comprises the first frequency sub band, and wherein the bandwidth of the second predetermined radio signal is larger than the bandwidth of the second frequency sub band and comprises the second frequency sub band,
wherein the method further comprises
performing a first channel estimation in order to determine a first channel estimation result and performing a second channel estimation in order to determine a second channel estimation result,
estimating a relative phase errorΔΦPa,Pb based on the first channel estimation result and the second channel estimation result, and
determining an overall phase basis of the first and second predetermined radio signals under compensation of the relative phase error ΔΦPa,Pb,
AND
a) wherein the first channel estimation is performed in a frequency band spectrally covering the first frequency sub band and at least a spectral portion of the first predetermined radio signal located outside the first frequency sub band, and wherein the second channel estimation is performed in a frequency band spectrally covering the second frequency sub band and at least a spectral portion of the second predetermined radio signal located inside the second frequency sub band, wherein said spectral portion of the first predetermined radio signal located outside the first frequency sub band spectrally overlaps with said spectral portion of the second predetermined radio signal located inside the second frequency sub band, and using the spectrally overlapping spectral portions for determining the overall phase basis,
OR
b) wherein the first channel estimation is performed in a frequency band spectrally covering the first frequency sub band and at least a spectral portion of the first predetermined radio signal located inside the first frequency sub band, and wherein the second channel estimation is performed in a frequency band spectrally covering the second frequency sub band and at least a spectral portion of the second predetermined radio signal located outside the second frequency sub band, wherein said spectral portion of the first predetermined radio signal located inside the first frequency sub band spectrally overlaps with said spectral portion of the second predetermined radio signal located outside the second frequency sub band, and using the spectrally overlapping spectral portions for determining the overall phase basis,
OR
c) wherein the first channel estimation is performed in a frequency band spectrally covering the first frequency sub band and a spectral portion of the first predetermined radio signal located inside the first frequency sub band and a spectral portion of the first predetermined radio signal located outside the first frequency sub band, and wherein the second channel estimation is performed in a frequency band spectrally covering the second frequency sub band and a spectral portion of the second predetermined radio signal located outside the second frequency sub band and a spectral portion of the second predetermined radio signal located inside the second frequency sub band, wherein said spectral portion of the first predetermined radio signal located inside the first frequency sub band spectrally overlaps with said spectral portion of the second predetermined radio signal located outside the second frequency sub band, and wherein said spectral portion of the first predetermined radio signal located outside the first frequency sub band spectrally overlaps with said spectral portion of the second predetermined radio signal located inside the second frequency sub band, and using the spectrally overlapping spectral portions for determining the overall phase basis.

10 more elements

Dependencies are inferred from the claim text.

Channel estimation of frequency sub bands

Life of this patent

Channel estimation of frequency sub bands

Life of this patent

Abstract

Claims44