Optimal Detection of IDMA Signals
Authors:
- Oliver NagyONOliver Nagy
- Mark C. ReedMRMark C. Reed
- Zhenning ShiZSZhenning Shi
- 1 January 2007
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- No. 15253511,p. 1236-1240
Abstract
In this paper the system model of an uncoded and fully synchronised interleave division multiple access (IDMA) scheme is transformed into an equivalent matrix model. This new model allows for additional alternative insights into the principles of IDMA and it is shown that the arising matrices are highly structured and very sparse. Furthermore the optimal detector for IDMA is derived and compared to the standard iterative decoder. The authors use exit charts and an empirical rank analysis to highlight that systems without an alternating signature mask always have a low rank and that parallel interference cancellation then fails.Keywords
This publication has 6 references indexed in Scilit:
- Analysis and Optimization of Interleave-Division Multiple-Access Communication Systems2006
- User-specific chip-level interleaver design for IDMA systemsElectronics Letters, 2006
- Convergence Analysis and Optimal Scheduling for Multiple Concatenated CodesIEEE Transactions on Information Theory, 2005
- Interleave-division multiple access and chip-by-chip iterative multi-user detectionIEEE Communications Magazine, 2005
- Mitigating multiple access interference and intersymbol interference in uncoded CDMA systems with chip-level interleavingIEEE Transactions on Wireless Communications, 2002
- Convergence behavior of iteratively decoded parallel concatenated codesIEEE Transactions on Communications, 2001