A simple formula for monitoring quadrature phase error with arbitrary signals
| Autor: | M.D. Kulkarni, Alexander B. Kostinski |
|---|---|
| Rok vydání: | 1995 |
| Předmět: |
Noise power
Observational error Mean squared error Gaussian Mathematical analysis Computer Science::Software Engineering Gauss–Kronrod quadrature formula Quadrature (mathematics) symbols.namesake Amplitude symbols General Earth and Planetary Sciences Probability distribution Electrical and Electronic Engineering Mathematics Remote sensing |
| Zdroj: | IEEE Transactions on Geoscience and Remote Sensing. 33:799-802 |
| ISSN: | 0196-2892 |
| DOI: | 10.1109/36.387597 |
| Popis: | The authors consider the problem of monitoring quadrature receiver errors without using specifically designed test signals. A previously derived simple formula /spl rho/=-sin /spl phi/ where /spl rho/ is the cross-correlation coefficient at zero lag between the in-phase (i) and quadrature phase (q) components and /spl phi/ is the receiver phase imbalance, is generalized in several ways. The generalized version, while still simple, is surprisingly robust because it applies to a wide variety of random and deterministic signals. However, it provides an estimate of /spl phi/ in the case of known noise power or large SNR. The effects of the additive receiver noise are also included. The case of jointly Gaussian i and q distributions is examined further and the marginal pdf's of the amplitude and phase of the random signal in the presence of quadrature errors are derived. > |
| Databáze: | OpenAIRE |
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