Compensation of coherent DQPSK receiver imperfections
- 1 July 2007
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- No. 10994742,p. 19-20
- https://doi.org/10.1109/leosst.2007.4288310
Abstract
This paper studies the impact of imperfections and impairments on the performance of a coherent phase-diversity DQPSK receiver. Experiments demonstrate that quadrature imbalance can be corrected by ellipse fitting and Gram-Schmidt-like orthogonalization. In addition, it is shown that intermediate frequency offset can be estimated using low complexity, feed-forward, least-square-error based algorithms.Keywords
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