Spatial Channel Pairing and Mapping in ZF Relaying Systems

doi:10.13190/jbupt.201005.84.longh

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2010, Vol. 33 ›› Issue (5): 84-88.doi: 10.13190/jbupt.201005.84.longh

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Spatial Channel Pairing and Mapping in ZF Relaying Systems

Received:2009-09-01 Revised:2010-04-21 Online:2010-08-28 Published:2010-06-15

Abstract

Abstract:

Spatial channel pairing and mapping at the relay node are proposed to be used in the zeroforcing (ZF) relaying system to mitigate the relaying noise. A spatial channel pairing (mapping) matrix is presented between the backward filter and the forward filter at the relay node. The spatial channel pairing based on permutation matrices is used when several destination nodes with singleantenna are supported by the relay node, while the spatial channel mapping based on unitary matrices is used if a destination node with multiple antennas is supported. Analysis and simulation demonstrate that the noise power in the relaying signal decreases with the spatial channel pairing (mapping) and the received signaltonoise ratio (SNR) of each data stream is improved.

CLC Number:

TN929.53

References

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Spatial Channel Pairing and Mapping in ZF Relaying Systems

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