Design of Coded ALOHA With ZigZag Decoder

IEEE Access

Koji Ishibashi¹  Shun Ogata¹  Masaru Oinaga¹ 

[1] Advanced Wireless and Communication Research Center, The University of Electro-Communications, Chofu, Japan;

关键词: Slotted ALOHA;    successive interference cancellation;    ZigZag decoding;   

DOI  :  10.1109/ACCESS.2019.2954163

来源: DOAJ

【 摘 要 】

In this study, we investigated the effects of combining a zigzag decoder (ZD) with a coded ALOHA using the successive interference cancellation (SIC) technique to retrieve packets from collisions. We proposed zigzag decodable coded slotted ALOHA (ZDCSA) and enhanced-ZDCSA (E-ZDCSA) as a scheme which applies ZD before and after SIC, respectively. Furthermore, we derived the asymptotic analysis for the throughput and packet loss rate (PLR) performances of E-ZDCSA and validated its accuracy with the Monte Carlo simulations. Through numerical and asymptotic analyses, we showed that E-ZDCSA outperforms ZDCSA and the conventional coded ALOHA schemes in terms of throughput and PLR performances in most of the offered load regime. Moreover, we demonstrated that our proposed schemes outperform the conventional protocol in a practical scenario in which ZD cannot resolve all the collisions.

【 授权许可】

Unknown