Details

Autor(en) / Beteiligte

• Feng, Guangsheng
• Zhao, Qian
• Wang, Huiqiang
• Lv, Hongwu
• Junyu, Lin
• Ma, Chunguang

Titel

Optimizing Utility of Cognitive Radio Ad Hoc Networks under the Energy and Retransmission Constraint

Ist Teil von

• China communications, 2014, Vol.11 (1), p.148-155

Ort / Verlag

China Institute of Communications

Erscheinungsjahr

2014

Quelle

IEEE Xplore

Beschreibungen/Notizen

• In Cognitive radio ad hoc networks （CRAHNs）, the secondary users （SUs） or cognitive radio nodes （CRs） are always equipped with limited energy and have a high error probability of data transmission. To address this issue, we first describe the network utility under energy constraint as a max-min model, where the re-transmission strategy with network coding is employed. Additionally, the expression of retransmission probability is presented in terms of power and bit error rate （BER）. Moreover, since the max-min model is non-convex in both objective and constraints, we use a normal- form game to find a near-optimal solution. The simulation results show that the proposed approach could achieve a higher network utility than the compared approaches.