Performance evaluation of RS encoded TCM-8PSK in the presence of interference [satellite communication]

Author

Haschart, David ; Kim, Junghwan ; Kwatra, S.C. ; Stevens, Grady H.

Author_Institution

Dept. of Electr. Eng., Toledo Univ., OH, USA

fYear

1991

fDate

19-22 May 1991

Firstpage

39

Lastpage

44

Abstract

The effects of adjacent channel interference (ACI) and cochannel interference (CCI) on a Reed-Solomon/trellis coded modulation (RS/TCM) concatenated system with quadrature phase-shift keying (QPSK) as the interference source are examined. All results are obtained using direct simulation by computer. The system is examined in both an AWGN (additive white Gaussian noise) channel and a Rician fading channel, assuming an L-band carrier. The inner code of the RS/TCM system is rate 2/3, 4-state TCM and the outer code is a rate 56/63 RS code. It is shown that in all cases the gain of the RS/TCM system (over QPSK) increases as the interference increases. Specifically, for the fading channel with a bit error rate of 10^-4, RS/TCM showed a gain of about 10.5 dB under ACI with a channel separation of 2.0/T_s, where T_s is the symbol duration, and an SIR (signal to interference ratio) of -2 dB. For CCI, the gain was about 6.5 dB with an SIR of 5 dB

Keywords

encoding; error correction codes; fading; interference (signal); phase shift keying; satellite relay systems; 10.5 dB; 6.5 dB; AWGN; L-band carrier; QPSK; RS encoded TCM-8PSK; Reed-Solomon/trellis coded modulation; Rician fading channel; additive white Gaussian noise; adjacent channel interference; cochannel interference; concatenated system; gain; inner code; outer code; performance evaluation; quadrature phase-shift keying; satellite communication; signal to interference ratio; AWGN; Computational modeling; Concatenated codes; Interchannel interference; Modulation coding; Phase modulation; Phase shift keying; Quadrature phase shift keying; Radiofrequency interference; Reed-Solomon codes;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1991. Gateway to the Future Technology in Motion., 41st IEEE

Conference_Location

St. Louis, MO

ISSN

1090-3038

Print_ISBN

0-87942-582-2

Type

conf

DOI

10.1109/VETEC.1991.140441

Filename

140441