Conference proceeding
Multi-stage Detection Using Constellation Structure
2006 Fortieth Asilomar Conference on Signals, Systems and Computers, pp.585-589
10/2006
DOI: 10.1109/ACSSC.2006.354815
Abstract
A structural approach to multi-stage detection is proposed where the joint information between interfering users is utilized to give better soft decisions on the user bits in each stage or iteration. The key idea is to use the structure of the multi-user signal constellation to achieve higher performance in terms of the bit-error-rate, particularly at high SNR, and reduce the possibility of error propagation or limit cycles. A maximal asymptotic efficiency detector is employed as the first stage to generate better initial estimates of the user bits, followed by a local maximum likelihood kernel for subsequent stages. The proposed detector is particularly attractive for heavily correlated or over-loaded multi-user systems. The proposed multi-stage detector also includes the possibility of known memoryless non-linearity in the system, e.g., the non-linearity introduced due to saturation by the downlink RF amplifier in satellite communication systems.
Details
- Title: Subtitle
- Multi-stage Detection Using Constellation Structure
- Creators
- Ananya Sen Gupta - University of Illinois Urbana-ChampaignAndrew C Singer - University of Illinois at Urbana–Champaign
- Resource Type
- Conference proceeding
- Publication Details
- 2006 Fortieth Asilomar Conference on Signals, Systems and Computers, pp.585-589
- Publisher
- IEEE
- DOI
- 10.1109/ACSSC.2006.354815
- ISSN
- 1058-6393
- eISSN
- 2576-2303
- Language
- English
- Date published
- 10/2006
- Academic Unit
- Electrical and Computer Engineering
- Record Identifier
- 9984197350702771
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