BCH and LDPC coded wide-band modem for 21-GHz band satellite broadcasting system

Author

Suzuki, Yoichi ; Matsusaki, Yoshifumi ; Kamei, Masashi ; Hashimoto, Akinori ; Kimura, Takeshi ; Tanaka, Shoji ; Ikeda, Tetsuomi

Author_Institution

NHK Sci. & Technol. Res. Labs., Tokyo, Japan

fYear

2015

fDate

25-28 Jan. 2015

Firstpage

4

Lastpage

6

Abstract

The 21-GHz band has been allocated for Ka-band BSS and has a wide bandwidth from 21.4 to 22.0GHz. The 600MHz spectrum allocation is suitable for UHDTV satellite broadcasting. As a countermeasure for rain attenuation due to Ka-band characteristics, a strong forward error correction scheme must be implemented for stable signal reception. We have implemented the concatenated code of BCH and LDPC in the Q/8PSK wide-band modem, whose maximum symbol rate is 250Mbaud. Through measurements, we confirmed clear coding gain against QPSK and 8PSK with no FEC under AWGN.

Keywords

AWGN; BCH codes; concatenated codes; direct broadcasting by satellite; forward error correction; high definition television; modems; parity check codes; quadrature phase shift keying; 8PSK; AWGN; BCH coded wideband modem; Ka-band BSS; LDPC coded wideband modem; QPSK; UHDTV satellite broadcasting; broadcasting satellite service; concatenated code; forward error correction scheme; frequency 21 GHz; frequency 21.4 GHz to 22 GHz; rain attenuation; signal reception; spectrum allocation; Encoding; Forward error correction; Modems; Parity check codes; Phase shift keying; Satellite broadcasting; 8PSK; BCH code; LDPC code; QPSK; Satellite Broadcasting; wide-band Modem;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio and Wireless Symposium (RWS), 2015 IEEE

Conference_Location

San Diego, CA

Type

conf

DOI

10.1109/RWS.2015.7129777

Filename

7129777