Abstract
This paper introduces a novel family of blind feedforward nonlinear least-squares (NLS) estimators for joint estimation of the carrier phase and frequency offset of quadrature amplitude modulations (QAM). An optimal or "matched" nonlinear estimator that exhibits the smallest asymptotic variance within the family of envisaged NLS-estimators is developed. A class of computationally efficient monomial estimators is also proposed. The asymptotic performance of these estimators is established in closed-form expression and compared with the Cramèr-Rao lower bound corresponding to an unmodulated carrier. Finally, computer simulations are presented to corroborate the theoretical performance analysis.
| Original language | English |
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| Pages (from-to) | 1499-1503 |
| Number of pages | 5 |
| Journal | Conference Record of the Asilomar Conference on Signals, Systems and Computers |
| Volume | 2 |
| Publication status | Published - 1 Dec 2001 |
| Externally published | Yes |
| Event | 35th Asilomar Conference on Signals, Systems and Computers - Pacific Grove, CA, United States Duration: 4 Nov 2001 → 7 Nov 2001 |