Broadcast signal transmitter/receiver and broadcast signal transmitting/receiving method

Patent metadata

Field	Value
Publication number	US-9794102-B2
Application number	US-201615265265-A
Country	US
Kind code	B2
Filing date	Sep 14, 2016
Priority date	Dec 14, 2010
Publication date	Oct 17, 2017
Grant date	Oct 17, 2017

Abstract

A method for transmitting broadcast signals in a transmitter includes encoding data for Physical Layer Pipes (PLPs), mapping the encoded data onto constellations according to modulation types, multi-input multi-output (MIMO) processing the mapped data for the MIMO processing by multiplying a rotation matrix with a pair of symbols of the mapped data and applying a phase rotation matrix to the multiplied symbols, time interleaving the MIMO processed data, building frames by mapping the time interleaved data, frequency-interleaving data in the built frames, modulating the frequency-interleaved data by an Orthogonal Frequency Division Multiplexing (OFDM) scheme, and transmitting the broadcast signals including the modulated data. The frames includes signaling information for signaling data in the frames. The signaling information includes information on a PLP identifier.

First claim

The invention claimed is:

1. A method for transmitting broadcast signals in a transmitter, the method comprising:
encoding data for Physical Layer Pipes (PLPs);
mapping the encoded data onto constellations according to modulation types;
Multi-Input Multi-Output (MIMO) processing the mapped data for the MIMO processing by multiplying a rotation matrix with a pair of symbols of the mapped data and applying a phase rotation matrix to the multiplied symbols;
time interleaving the MIMO processed data;
building frames by mapping the time interleaved data;
frequency-interleaving data in the built frames;
modulating the frequency-interleaved data by an Orthogonal Frequency Division Multiplexing (OFDM) scheme; and
transmitting the broadcast signals including the modulated data,
wherein the frames include signaling information for signaling data in the frames,
wherein the signaling information includes information on a PLP identifier,
wherein the rotation matrix is represented as:

[

cos
⁢

⁢
θ

sin
⁢

⁢
θ

sin
⁢

⁢
θ

-
cos

⁢

⁢
θ

]

wherein “θ” is a rotation angle and the rotation angle depends on one of the modulation types.

2. A method for receiving broadcast signals in a transmitter, the method comprising:
receiving the broadcast signals;
demodulating the received broadcast signals by an Orthogonal Frequency Division Multiplexing (OFDM) scheme,
frequency de-interleaving the demodulated broadcast signals;
parsing frames from the frequency de-interleaved broadcast signals;
time de-interleaving symbols in the parsed frames;
Multi-Input Multi Output (MIMO) decoding the time de-interleaved symbols using a rotation matrix and a phase rotation matrix with a pair of symbols;
demapping the MIMO decoded symbols into data for Physical Layer Pipes (PLPs);
decoding the data for the PLPs, wherein the frames include signaling information for signaling data in the frames, wherein the signaling information includes information on a PLP identifier, wherein the rotation matrix is represented as:

[

cos
⁢

⁢
θ

sin
⁢

⁢
θ

sin
⁢

⁢
θ

-
cos

⁢

⁢
θ

]

wherein “θ” is a rotation angle and the rotation angle depends on one of modulation types.

Assignees

• Lg Electronics Inc

Inventors

• Moon Sangchul
• Back Seoyoung
• Ko Woosuk

Classifications

• H04L5/0044

  Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH · CPC title

• H04L1/0071

  Use of interleaving (interleaving per se H03M13/27) · CPC title

• H04L5/0053

  Allocation of signalling, i.e. of overhead other than pilot signals · CPC title

• H04L1/0041

  Arrangements at the transmitter end · CPC title

• H04B7/0697

  using spatial multiplexing · CPC title