Multi-Dimensional Graph-Based Soft Iterative Receiver for MIMO-OFDM

Knievel, Christopher, Hoeher, Peter, Tyrrell, Alexander and Auer, Gunther (2012) Multi-Dimensional Graph-Based Soft Iterative Receiver for MIMO-OFDM Ieee Transactions on Communications, 60 (6). pp. 1599-1609.

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A graph-based receiver is presented that iteratively performs soft channel estimation and soft data detection. Reliability information of data symbols is utilized to improve channel estimation, and in turn, soft channel estimates refine data symbol estimates. The proposed multi-dimensional factor graph introduces transfer nodes that exploit correlation of adjacent channel coefficients in an arbitrary number of dimensions (e. g. time, frequency, and spatial domain). This establishes a simple and flexible receiver structure that facilitate soft channel estimation and data detection in multi-dimensional dispersive channels, and supports arbitrary modulation and channel coding schemes. Simulation results demonstrate that the proposed multidimensional graph-based receiver outperforms iterative and non-iterative state-of-the-art receivers.

Document Type: Article
Research affiliation: OceanRep > The Future Ocean - Cluster of Excellence
Kiel University
Refereed: Yes
ISSN: 0090-6778
Projects: Future Ocean
Date Deposited: 14 May 2014 09:55
Last Modified: 01 Aug 2018 08:45

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