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

被引：0
|
作者：
Jayarathne, Harindu [1 ]
Marasinghe, Dileepa [1 ]
Rajatheva, Nandana [1 ]
Latva-Aho, Matti [1 ]
机构：
[1] Univ Oulu, Ctr Wireless Commun, Oulu 90570, Finland
来源：
IEEE COMMUNICATIONS LETTERS | 2024年 / 28卷 / 11期
基金：
芬兰科学院;
关键词：
Delays; Signal to noise ratio; Modulation; Symbols; Optimization; Interleaved codes; Decoding; Delayed bit-interleaved coded modulation (DBICM); bit-interleaved coded modulation (BICM); delay scheme optimization; CONSTELLATIONS; DESIGN;
D O I：
10.1109/LCOMM.2024.3464873
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
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.
引用
收藏
页码：2588 / 2592
页数：5
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