Cooperative DoA-Only Localization of Primary Users in Cognitive Radio Networks

In this paper, the authors investigate localization techniques based on Direction-of-Arrival (DoA) measurements to estimate the position of primary users in cognitive radio networks. In the proposed approach, different multi-antenna sensors estimate the DoA of a primary signal by subspace-based techniques and the target position is estimated from the available DoA measurements using maximum-likelihood, least-squares, or Stansfield estimators. The resulting localization performance is evaluated numerically and compared to the Cramr-Rao bound derived under a considered problem setting. The impact of several system parameters (in particular, number of sensors and number of antennas per sensors) is thoroughly analyzed and discussed

Provided by: EURASIP Topic: Networking Date Added: Apr 2013 Format: PDF

Find By Topic