Consiglio Nazionale delle Ricerche

Tipo di prodottoArticolo in rivista
TitoloOptimal Power Allocation Strategies in Two-Hop X-duplex Relay Channel
Anno di pubblicazione2018
Autore/iNordio A.; Chiasserini C.F.; Viterbo E.
Affiliazioni autoriCNR-IEIIT, Torino, 10129 Italy., ; Department of Electronics and Telecommunications, Politecnico di Torino, 10129 Italy and a Research Associate at CNR-IEIIT., ; Monash University, Australia.,
Autori CNR e affiliazioni
  • inglese
AbstractWe consider a dual-hop, decode-and-forward network where the relay can operate in FD or HD mode (X-duplex relay). We model the residual self-interference as an additive Gaussian noise with variance proportional to the relay transmit power, and we assume a Gaussian input distribution at the source. Unlike previous work, we assume that the source is only aware of the transmit power distribution adopted by the relay, but not of the symbols that the relay is currently transmitting. This assumption better reflects the practical situation where the relay node forwards data traffic but modifies physical-layer or linklayer control information. We then identify the optimal power allocation strategy at the source and relay, which in some cases coincides with the HD transmission mode. We prove that such strategy implies either FD transmissions over an entire time frame, or FD/HD transmissions over a variable fraction of the frame. We determine the optimal transmit power level at the source and relay for each frame, or fraction thereof. We compare the performance of our scheme against reference FD and HD techniques, which assume that the source is aware of the symbols instantaneously transmitted by the relay, and show that our solution closely approaches such strategies.
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RivistaIEEE transactions on communications (Print)
Attiva dal 1972
Editore: Institute of Electrical and Electronics Engineers] - [New York,
Paese di pubblicazione: Stati Uniti d'America
Lingua: inglese
ISSN: 0090-6778
Titolo chiave: IEEE transactions on communications (Print)
Titolo proprio: IEEE transactions on communications. (Print)
Titolo abbreviato: IEEE trans. commun. (Print)
Titoli alternativi:
  • Transactions on communications (Print)
  • Communications (Print)
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Verificato da refereeSì: Internazionale
Stato della pubblicazionePublished version
Indicizzazione (in banche dati controllate)
  • Scopus (Codice:2-s2.0-85043391724)
Parole chiaveFull-duplex, Half-duplex, Relay networks, Communication strategies
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Strutture CNR
  • IEIIT — Istituto di elettronica e di ingegneria dell'informazione e delle telecomunicazioni
Moduli CNR
    Progetti Europei-