Reduction of Delay for Delayed Bit-Interleaved Coded Modulation

Abstract

This study focuses on delayed bit-interleaved coded modulation (DBICM) for a two-dimensional signal constellation and shows that the capacity of DBICM is identical to the coded modulation capacity with less delay than before. An appropriate bit-labeling scheme based on Gray labeling for each signal point is also considered to prevent the performance degradation of DBICM. The results of the numerical calculations and simulations indicate that the proposed method improves performance.