Work

Optimization of Delayed Bit-Interleaved Coded Modulation in the High-SNR Regime

Year: 2024

Type: article

Abstract: In this letter, we investigate the capacity of delay schemes in delayed bit-interleaved coded modulation (DBICM) at high signal-to-noise ratios (SNR) using alternative methods to numerical integration. A closed-form formula is derived to approximate the DBICM capacity at high SNR. For Gray codes, DBICM capacity is proven as asymptotically optimal irrespective of the delay scheme and we further characterize the minute variations in finite SNR values. Compared to BICM using the binary reflected Gray Code, an improvement of 0.1 dB in the BER performance is achieved using a non-Gray bit-labeling combined with its optimized DBICM delay scheme.

Source: IEEE Communications Letters

DOI: 10.1109/lcomm.2024.3464873

Authors: Harindu Jayarathne, Dileepa Marasinghe, Nandana Rajatheva, Matti Latva-Aho

Institution: University of Oulu

Language: English

Topic: Advanced Wireless Communication Techniques

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $2,495

Funder: Academy of Finland