Degrees of Freedom of Asymmetrical Multi-Way Relay Networks

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Abstract

In this paper, we introduce an asymmetrical multi-way relay channel where a base station conveys independent symbols to K different users while receiving independent symbols from the users. In this network, user i Shas Mi antennas (i ∈ [1, ..., K]), the base station has Σi=1K Mi antennas and the relay is equipped with NR antennas. To study the capacity of this network, the degree of freedom (DOF) is characterized to be 2 Σi=1K Mi if NR ≥ Σi=1K Mi. The DOF implies that the number of symbols any transmitter can deliver and receive is equivalent to its number of antennas. The DOF is achievable with a proposed joint multiple access and broadcast precoding design using the signal space alignment concept.
Original languageEnglish
JournalI E E E Workshop on Signal Processing Advances in Wireless Communications. Proceedings
Pages (from-to)516-520
Number of pages5
ISSN1242-5125
DOIs
Publication statusPublished - Jun 2011

Cite this

@inproceedings{0700618a81ba4bdc90434891f97a5c46,
title = "Degrees of Freedom of Asymmetrical Multi-Way Relay Networks",
abstract = "In this paper, we introduce an asymmetrical multi-way relay channel where a base station conveys independent symbols to K different users while receiving independent symbols from the users. In this network, user i Shas Mi antennas (i ∈ [1, ..., K]), the base station has Σi=1K Mi antennas and the relay is equipped with NR antennas. To study the capacity of this network, the degree of freedom (DOF) is characterized to be 2 Σi=1K Mi if NR ≥ Σi=1K Mi. The DOF implies that the number of symbols any transmitter can deliver and receive is equivalent to its number of antennas. The DOF is achievable with a proposed joint multiple access and broadcast precoding design using the signal space alignment concept.",
author = "Fan Sun and {De Carvalho}, Elisabeth",
year = "2011",
month = "6",
doi = "10.1109/SPAWC.2011.5990468",
language = "English",
pages = "516--520",
journal = "I E E E Workshop on Signal Processing Advances in Wireless Communications. Proceedings",
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publisher = "IEEE Communications Society",

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Degrees of Freedom of Asymmetrical Multi-Way Relay Networks. / Sun, Fan; De Carvalho, Elisabeth.

In: I E E E Workshop on Signal Processing Advances in Wireless Communications. Proceedings, 06.2011, p. 516-520.

Research output: Contribution to journalConference article in JournalResearchpeer-review

TY - GEN

T1 - Degrees of Freedom of Asymmetrical Multi-Way Relay Networks

AU - Sun, Fan

AU - De Carvalho, Elisabeth

PY - 2011/6

Y1 - 2011/6

N2 - In this paper, we introduce an asymmetrical multi-way relay channel where a base station conveys independent symbols to K different users while receiving independent symbols from the users. In this network, user i Shas Mi antennas (i ∈ [1, ..., K]), the base station has Σi=1K Mi antennas and the relay is equipped with NR antennas. To study the capacity of this network, the degree of freedom (DOF) is characterized to be 2 Σi=1K Mi if NR ≥ Σi=1K Mi. The DOF implies that the number of symbols any transmitter can deliver and receive is equivalent to its number of antennas. The DOF is achievable with a proposed joint multiple access and broadcast precoding design using the signal space alignment concept.

AB - In this paper, we introduce an asymmetrical multi-way relay channel where a base station conveys independent symbols to K different users while receiving independent symbols from the users. In this network, user i Shas Mi antennas (i ∈ [1, ..., K]), the base station has Σi=1K Mi antennas and the relay is equipped with NR antennas. To study the capacity of this network, the degree of freedom (DOF) is characterized to be 2 Σi=1K Mi if NR ≥ Σi=1K Mi. The DOF implies that the number of symbols any transmitter can deliver and receive is equivalent to its number of antennas. The DOF is achievable with a proposed joint multiple access and broadcast precoding design using the signal space alignment concept.

U2 - 10.1109/SPAWC.2011.5990468

DO - 10.1109/SPAWC.2011.5990468

M3 - Conference article in Journal

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JO - I E E E Workshop on Signal Processing Advances in Wireless Communications. Proceedings

JF - I E E E Workshop on Signal Processing Advances in Wireless Communications. Proceedings

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