Performance of low-density parity-check coded modulation

Author

Hamkins, Jon

Author_Institution

Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA

fYear

2010

fDate

6-13 March 2010

Firstpage

1

Lastpage

14

Abstract

This paper reports the performance of a family of nine accumulate-repeat-4-jagged-accumulate (AR4JA) low-density parity-check (LDPC) codes [4] when used in conjunction with binary phase-shift-keying (BPSK), quadrature PSK (QPSK), 8-PSK, 16-ary amplitude PSK (16-APSK), and 32-APSK. We also report the performance under various mappings of bits to modulation symbols, hard decision decoding, log-likelihood ratio (LLR) approximations, and decoder iterations. One of the simple and well-performing LLR approximations can be expressed in a general equation that applies to all of the modulation types.

Keywords

amplitude modulation; approximation theory; binary codes; decoding; parity check codes; quadrature phase shift keying; 32-APSK; 6-APSK; 6-ary amplitude PSK; 8-PSK; AR4JA; BPSK; LDPC codes; QPSK; accumulate-repeat-4-jagged-accumulate code; binary phase-shift-keying; decoder iteration; hard decision decoding; log-likelihood ratio approximation; low-density parity-check coded modulation; modulation symbol; quadrature PSK; Amplitude modulation; Binary phase shift keying; Equations; Iterative decoding; Modulation coding; Parity check codes; Phase modulation; Phase shift keying; Quadrature phase shift keying; Space missions;

fLanguage

English

Publisher

ieee

Conference_Titel

Aerospace Conference, 2010 IEEE

Conference_Location

Big Sky, MT

ISSN

1095-323X

Print_ISBN

978-1-4244-3887-7

Electronic_ISBN

1095-323X

Type

conf

DOI

10.1109/AERO.2010.5446927

Filename

5446927