Please use this identifier to cite or link to this item:
http://hdl.handle.net/10773/12538
Title: | Joint interference alignment and IB-DFE scheme for MC-CDMA systems |
Author: | Silva, Adão Dinis, Rui Moreira, José Gameiro, Atílio |
Keywords: | MC-CDMA systems Interference alignment Precoding IB-DFE |
Issue Date: | 1-Dec-2014 |
Publisher: | IEEE |
Abstract: | Interference alignment (IA) is a promising technique that allows high capacity gains in interfering channels. On the other hand, iterative block decision feedback equalization (IB-DFE) based receivers can efficiently exploit the inherent space-frequency diversity of the MIMO MC-CDMA systems. In this paper we combine IA precoding at the transmitter with IB-DFE based processing at the receiver for MC-CDMA systems. The IA precoding is applied at chip level instead of the data symbols level. The receiver is designed in two steps: first an equalizer based on zero forcing (ZF) is used to remove the aligned users' interference, then and after a whitening noise process, an IB-DFE based equalizer is designed to remove the residual inter-carrier interference. Our proposed scheme achieves the maximum degrees of freedom provided by the IA precoding, while allowing a close-to-optimum diversity gain, with performance close to the matched filter bound (MFB). |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/12538 |
DOI: | 10.1109/ICSPCS.2013.6723951 |
Appears in Collections: | DETI - Comunicações |
Files in This Item:
File | Description | Size | Format | |
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C1.pdf | 249.22 kB | Adobe PDF |
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