@inproceedings{e23680b730b34c39ba21ce477b4b66ee,
title = "EXIT chart analysis for turbo LDS-OFDM receivers",
abstract = "In this paper, the mutual information transfer characteristics of turbo Multiuser Detector (MUD) for a novel air interface scheme, called Low Density Signature Orthogonal Frequency Division Multiplexing (LDS-OFDM) are investigated using Extrinsic Information Transfer (EXIT) charts. LDS-OFDM uses Low Density Signature structure for spreading the data symbols in frequency domain. This technique benefits from frequency diversity besides its ability of supporting parallel data streams more than the number of subcarriers (overloaded condition). The turbo MUD couples the data symbols' detector of LDS scheme with users' FEC (Forward Error Correction) decoders through the message passing principle. The effect of overloading on LDS scheme's performance is evaluated using EXIT chart. The results show that at Eb/N0 as low as 0.3, LDS-OFDM can support loads up to 300\%.",
keywords = "Iterative decoding, Low density signature, Multiuser detection",
author = "Razieh Razavi and \{Ali Imran\}, Muhammad and Rahim Tafazolli",
year = "2011",
doi = "10.1109/IWCMC.2011.5982559",
language = "English",
isbn = "9781424495399",
series = "IWCMC 2011 - 7th International Wireless Communications and Mobile Computing Conference",
pages = "354--358",
booktitle = "IWCMC 2011 - 7th International Wireless Communications and Mobile Computing Conference",
note = "7th International Wireless Communications and Mobile Computing Conference, IWCMC 2011 ; Conference date: 04-07-2011 Through 08-07-2011",
}