High rate turbo codes for BPSK/QPSK channels

Author

Açikel, Ömer F. ; Ryan, William E.

Author_Institution

New Mexico State Univ., Las Cruces, NM, USA

Volume

1

fYear

1998

fDate

7-11 Jun 1998

Firstpage

422

Abstract

We discuss a procedure for the design of 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 size m=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 bit error rate (BER) performance of the proposed codes are found via computer simulation and are observed in each case to be about 0.7 dB from their respective channel capacity limits at a BER of 10^-5

Keywords

Gaussian channels; channel capacity; channel coding; concatenated codes; convolutional codes; error statistics; interleaved codes; phase shift keying; polynomials; quadrature phase shift keying; AWGN channel; BER performance; BPSK/QPSK channels; bit error rate; channel capacity limits; computer simulation; constituent encoders; generator polynomials; high rate turbo codes; interleavers; minimum codeword weight; puncture patterns; puncturing; Application software; Bandwidth; Binary phase shift keying; Bit error rate; Channel capacity; Computer simulation; Convolutional codes; Decoding; Quadrature phase shift keying; Turbo codes;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 1998. ICC 98. Conference Record. 1998 IEEE International Conference on

Conference_Location

Atlanta, GA

Print_ISBN

0-7803-4788-9

Type

conf

DOI

10.1109/ICC.1998.682887

Filename

682887