On Hybrid Cooperation in Underlay Cognitive Radio Networks

Mahmood N. H., Yilmaz F., Oien G. E., Alouini M.

46th Asilomar Conference on Signals, Systems and Computers, California, Amerika Birleşik Devletleri, 4 - 07 Kasım 2012, ss.308-312 identifier identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Doi Numarası: 10.1109/acssc.2012.6489013
  • Basıldığı Şehir: California
  • Basıldığı Ülke: Amerika Birleşik Devletleri
  • Sayfa Sayıları: ss.308-312
  • Anahtar Kelimeler: Underlay cognitive radio network, hybrid cooperation, cooperative communication, amplify and forward relaying, WIRELESS NETWORKS, CAPACITY
  • İstanbul Teknik Üniversitesi Adresli: Hayır

Özet

In wireless systems where transmitters are subject to a strict received power constraint, such as in underlay cognitive radio networks, cooperative communication is a promising strategy to enhance network performance, as it helps to improve the coverage area and outage performance of a network. However, this comes at the expense of increased resource utilization. To balance the performance gain against the possible over-utilization of resources, we propose a hybrid-cooperation technique for underlay cognitive radio networks, where secondary users cooperate only when required. Various performance measures of the proposed hybrid-cooperation technique are analyzed in this paper, and are also further validated numerically.