Transmitting apparatus, receiving apparatus, and control methods thereof

Patent metadata

Field	Value
Publication number	US-9565044-B2
Application number	US-201414497633-A
Country	US
Kind code	B2
Filing date	Sep 26, 2014
Priority date	Sep 27, 2013
Publication date	Feb 7, 2017
Grant date	Feb 7, 2017

Abstract

A transmitting apparatus, a receiving apparatus and methods of controlling these apparatuses are provided. The transmitting apparatus includes: an input processor configured to process a plurality of input streams to generate a plurality of base band frames; a bit interleaved and coded modulation (BICM) processor configured to perform forward error correction (FEC) coding, constellation mapping, and interleaving on the plurality of baseband frames; a symbol generator configured to add signaling data to the plurality of baseband frames output from the BICM processor to generate an orthogonal frequency division multiplexing (OFDM) symbol; and a transmitter configured to select at least one of a plurality of pilot patterns based on a fast Fourier transform (FFT) size and a guard interval fraction, insert a pilot in the OFDM symbol according to the selected pilot pattern, and transmit a stream including the pilot-inserted OFDM symbol.

First claim

What is claimed is:

1. A transmitting apparatus, comprising:
an input processor configured to process an input stream to generate at least one frame;
a bit interleaved and coded modulation (BICM) processor configured to perform forward error correction (FEC) coding, constellation mapping, and interleaving on the frame;
a symbol generator configured to add signaling data to the frame output from the BICM processor to generate an orthogonal frequency division multiplexing (OFDM) symbol; and
a transmitter configured to select at least one of a plurality of pilot patterns based on a fast Fourier transform (FFT) size and a guard interval fraction, insert a pilot in the OFDM symbol according to the selected pilot pattern, and transmit a stream including the pilot-inserted OFDM symbol,
wherein a maximum length of a predetermined sequence inserted into the OFDM symbol is defined based on an FFT size and a guard interval fraction as shown in a following table.

Maximum sequence length, NPN (chips)

Guard Interval Faction

FFT
3/
6/
12/
24/
36/
48/
57/
72/
96/

Mode
512
512
512
512
512
512
512
512
512

32K
 50
 50
 50
 48
 48
 46
 46
NA
NA

16K
100
100
100
 96
 96
 92
 92
 88
 84

 8K
204
204
200
196
192
188
184
180
172.

2. The transmitting apparatus of claim 1 , wherein the transmitter includes a spectrum shaper configured to filter a signal corresponding to the OFDM symbol.

3. The transmitting apparatus of claim 2 , wherein the spectrum shaper increases attenuation of an intensity of the signal corresponding to the OFDM symbol to generate a signal having a preset form while reducing a filtering period length of the signal.

4. A transmitting apparatus, comprising:
an input processor configured to process an input stream to generate at least one frame;
a bit interleaved and coded modulation (BICM) processor configured to perform forward error correction (FEC) coding, constellation mapping, and interleaving on the frame;
a symbol generator configured to add signaling data to the frame output from the BICM processor to generate an orthogonal frequency division multiplexing (OFDM) symbol; and
a transmitter configured to select at least one of a plurality of pilot patterns based on a fast Fourier transform (FFT) size and a guard interval fraction, insert a pilot in the OFDM symbol according to the selected pilot pattern, and transmit a stream including the pilot-inserted OFDM symbol,
wherein the plurality of pilot patterns are defined based on an FFT size and a guard interval fraction in a single input single output (SISO) mode as shown in a following table.

Guard interval

FFT

24/
36/
48/
57/
72/
96/

size
3/512
6/512
12/512
512
512
512
512
512
512

32K
P32,2
P16,2
P8,2
P8,2
P8,2
NA

P32,2
P16,2
P16,2

P32,2

16K
P32,2
P16,2
P8,2
P4,4
P4,4
P4,4

 8K

P16,4
P16,2
P8,2
P8,2

P32,2
P16,4
P16,2

P32,2
P16,4.

5. A transmitting apparatus, comprising:
an input processor configured to process an input stream to generate at least one frame;
a bit interleaved and coded modulation (BICM) processor configured to perform forward error correction (FEC) coding, constellation mapping, and interleaving on the frame;
a symbol generator configured to add signaling data to the frame output from the BICM processor to generate an orthogonal frequency division multiplexing (OFDM) symbol; and
a transmitter configured to select at least one of a plurality of pilot patterns based on a fast Fourier transform (FFT) size and a guard interval fraction

Assignees

• Samsung Electronics Co Ltd

Inventors

• Lee Hak-Ju
• Kwon Soon-Chan
• Myung Se-Ho
• Park Jung-Hyun
• Park Joo-Sung
• Yang Hyun-Koo
• Yu Jung-Pil
• Yun Sung-Ryul
• Jeong Hong-Sil
• Han Jung-Il

Classifications

• H04L27/2605

  Symbol extensions, e.g. Zero Tail, Unique Word [UW] · CPC title

• H04L1/0045

  Arrangements at the receiver end · CPC title

• H04L5/0048

  Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091) · CPC title

• H04L27/2627

  Modulators · CPC title

• H04L1/0041

  Arrangements at the transmitter end · CPC title