US 10,951,370 B2 · Demapping apparatus and method for reception of data in a multi-carrier broadcast system

Abstract

An apparatus and a corresponding method for mapping payload data of mapping input data streams onto a mapping output data stream having a channel bandwidth for transmission in a multi-carrier broadcast system includes first and second frame forming mechanisms. The first frame forming mechanism is adapted to form first frames having a first frame structure and the second frame forming mechanism is adapted to form second frames having a second frame structure. Preferably, in a second frame structure the data blocks of a particular mapping input data stream are spread in time and frequency over various data symbols and various data segments of the second frames to provide high robustness against disturbances. The payload portion of the second frame is preferably segmented into various data segments enabling use of a narrow-band receiver, even if both the first and second frames cover the same total channel bandwidth.

Claims20

Dependent claims

A receiver apparatus comprising:

circuitry configured to:
receive an input data stream mapped onto a plurality of data symbols in at least one data frame having (i) a channel bandwidth comprising subcarriers in a frequency direction and (ii) data symbols in a time direction, the at least one data frame including a preamble portion and a payload portion,
demap from the preamble portion at least one preamble signaling block that includes signaling information,
demap from the payload portion a first physical layer pipe (PLP) and a second PLP in accordance with the signaling information, wherein the payload portion is segmented into data segments each covering a different bandwidth portion of the channel bandwidth, the PLPs being spread over various data symbols and various data segments in time and frequency,
demap data from other data symbols which are arranged differently to said payload portion, the other data symbols covering the whole channel bandwidth and carrying one PLP, and
output a data stream comprising data demapped from the preamble portion, the payload portion, and the other data symbols.

3 more elements

A non-transitory computer readable medium including computer executable instructions stored thereon which, when carried out on a computer, cause the computer to perform a method comprising:

receiving an input data stream mapped onto a plurality of data symbols in at least one data frame having (i) a channel bandwidth comprising subcarriers in a frequency direction and (ii) data symbols in a time direction, the at least one data frame including a preamble portion and a payload portion;
demapping from the preamble portion at least one preamble signaling block that includes signaling information;
demapping from the payload portion a first physical layer pipe (PLP) and a second PLP in accordance with the signaling information, wherein the payload portion is segmented into data segments each covering a different bandwidth portion of the channel bandwidth, the PLPs being spread over various data symbols and various data segments in time and frequency;
demapping data from other data symbols which are arranged differently to said payload portion, the other data symbols covering the whole channel bandwidth and carrying one PLP;
and
outputting a data stream comprising data demapped from the preamble portion, the payload portion, and the other data symbols.

3 more elements

Dependencies are inferred from the claim text.

Demapping apparatus and method for reception of data in a multi-carrier broadcast system

Life of this patent

Demapping apparatus and method for reception of data in a multi-carrier broadcast system

Life of this patent

Abstract

Claims20