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Communication Dans Un Congrès Année : 2016

Improved successive stream selection with quantized channel in heterogeneous networks

Esra Aycan Beyazit
Didier Le Ruyet

Résumé

This paper focuses on different distortion metrics in order to analyze the influence of the imperfect channel state information (CSI) on the improved successive stream selection algorithm that manages the interference in a heterogeneous network. The presented approach initially selects the streams from the user of the pico cell, continuing with the strongest streams among the remaining streams that increase the sum rate and satisfy the constraint that at least one stream is selected from each user. In order to reduce the interference, the channel matrices of the remaining streams are projected orthogonally to the virtual transmit and receive channels of the selected stream. The impact of the quantization distortion on the precoding and postcoding design is examined. The performance of two distortion metrics which are the Chordal distance and the Euclidean distance are compared for different number of quantization bits. The performance evaluations are obtained by considering different locations of small cells with respect to the macro cell.

Domaines

Electronique

Dates et versions

hal-01321326 , version 1 (25-05-2016)

Licence

Copyright (Tous droits réservés)

Identifiants

Citer

Esra Aycan Beyazit, Berna Ozbek, Didier Le Ruyet. Improved successive stream selection with quantized channel in heterogeneous networks. 2015 International Symposium on Wireless Communication Systems (ISWCS), Aug 2015, Brussels, Belgium. ⟨10.1109/ISWCS.2015.7454418⟩. ⟨hal-01321326⟩
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