Punctured turbo-codes for BPSK/QPSK channels

Author

Acikel, O.F. ; Ryan, William E.

Author_Institution

Dept. of Electr. & Comput. Eng., New Mexico State Univ., Las Cruces, NM, USA

Volume

47

Issue

9

fYear

1999

fDate

9/1/1999 12:00:00 AM

Firstpage

1315

Lastpage

1323

Abstract

We discuss a procedure for designing high-rate turbo-codes via puncturing, with applications to BPSK/QPSK channels. Rates in the form k/(k+1), 2⩽k⩽16, are considered for constituent encoders with memory sizes m=3 and 4. The algorithm includes the selection of constituent encoder generator polynomials, puncture patterns, and interleavers with the goal of maximizing the minimum codeword weight for weight-two and weight-three inputs. The performance of the proposed codes are found via computer simulation and are observed in each case to be less than 0.9 dB (m=3), and 0.75 dB (m=4), from their respective channel capacity limits at a bit-error rate of 10^-5. We consider two applications of punctured turbo-codes

Keywords

AWGN channels; binary codes; channel capacity; polynomials; quadrature phase shift keying; satellite links; turbo codes; AWGN channel; BER; BPSK/QPSK channels; binary turbo-codes; bit-error rate; channel capacity; computer simulation; encoders; generator polynomials; high-rate turbo-codes; interleavers; memory sizes; minimum codeword weight; performance; puncture patterns; punctured turbo-codes; satellite link; weight-three input; weight-two input; Bandwidth; Binary phase shift keying; Bit error rate; Channel capacity; Computer simulation; Convolutional codes; Iterative decoding; Phase shift keying; Quadrature phase shift keying; Turbo codes;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/26.789667

Filename

789667