Title :
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
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;
Conference_Titel :
Radio and Wireless Symposium (RWS), 2015 IEEE
Conference_Location :
San Diego, CA
DOI :
10.1109/RWS.2015.7129777
