Interference-aware resource control in multi-antenna cognitive ad hoc networks with heterogeneous delay constraints

Xiaoming Chen, Hsiao Hwa Chen

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

In this work, we consider a multi-antenna cognitive ad hoc network (CAHNet) with heterogeneous delay requirements. To fulfill the interference and delay constraints simultaneously, we propose to perform adaptive zero-forcing beamforming (ZFBF) at cognitive transmitters according to interference channel state information (CSI). To assist the CAHNet to obtain the interference CSI, we use a win-win inter-network cooperation strategy, namely quantized interference CSI feedback from the primary network to CAHNet through a feedback link, under the condition that the CAHNet pays a proper price for it. Considering the scarcity of feedback and power resources, we focus on the minimization of the overall resource cost subject to both interference and delay constraints. To solve the problem, we derive a joint feedback and power control algorithm amongst multiple links of CAHNet. Finally, simulation results validate the effectiveness of the proposed algorithm.

Original languageEnglish
Article number6510566
Pages (from-to)1184-1187
Number of pages4
JournalIEEE Communications Letters
Volume17
Issue number6
DOIs
Publication statusPublished - 2013 May 7

All Science Journal Classification (ASJC) codes

  • Modelling and Simulation
  • Computer Science Applications
  • Electrical and Electronic Engineering

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