## Abstract

In many cases where direction finding is of interest, the signals impinging on an antenna array are known to be phase modulated, hence to have a constant modulus (CM). This is a strong property, by itself already sufficient for source separation, and can be used to construct improved direction finding algorithms. We first present the relevant Cramer-Rao bounds for arbitrary array configurations, and arbitrary number of signals and then specialize to uniform linear arrays with a single source. We then propose a simple suboptimal direction estimation algorithm, in which the signals are separated using the CM property only. Compared to the ESPRIT algorithm and to the Cramer-Rao bound for arbitrary signals, the algorithm shows good results.

Original language | American English |
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Pages | 45-48 |

Number of pages | 4 |

State | Published - 1998 |

Externally published | Yes |

Event | Proceedings of the 1998 9th IEEE SP Workshop on Statistical Signal and Array Processing - Portland, OR, USA Duration: 14 Sep 1998 → 16 Sep 1998 |

### Conference

Conference | Proceedings of the 1998 9th IEEE SP Workshop on Statistical Signal and Array Processing |
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City | Portland, OR, USA |

Period | 14/09/98 → 16/09/98 |