Convolutional codes with optimum distance spectrum

被引：106

作者：

Frenger, P ^{[1
]}

Orten, P

Ottosson, T

机构：

[1] Ericsson Radio Syst AB, Ericsson Res, SE-16480 Stockholm, Sweden

[2] Chalmers Univ Technol, Dept Signals & Syst, Commun Syst Grp, SE-41296 Gothenburg, Sweden

来源：

IEEE COMMUNICATIONS LETTERS | 1999年 / 3卷 / 11期

关键词：

convolutional codes; optimum distance spectrum;

D O I：

10.1109/4234.803468

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

New convolutional codes with rates 1/2, 1/3, and 1/4 are presented for constraint lengths ranging from 3 to 15. These new codes are maximum free-distance codes. Furthermore, the codes have optimized information error weights, resulting in a tow bit-error rate for binary communication on both additive white Gaussian noise (AWGN) and Rayleigh fading channels. Improved coding gains of as much as 0.6 dB compared to previously published codes have been observed for coherent BPSK over a Rayleigh fading channel and a wide range of signal-to-mise ratios.

引用

页码：317 / 319

页数：3