Equalization of QPSK Data Transmission in Specular Multipath |
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Authors: | Ziemer RE Ryan CR |
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Institution: | University of Missouri-Rolla Rolla, Mo. 65401; |
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Abstract: | This paper gives performance results for transversal-filter equalization of quadriphase phase-shift-keyed (QPSK) signals with two-component multipath and demodulator phase error. An analytical expression for optimum, minimum mean-square-error tap weights in terms of the multipath and signal parameters is given. Probability of error results for no equalization and equalization with adaptive decision-feedback tap-weight adjustment are compared. The results show that significant improvement can be obtained with relatively simple equalizer structures. |
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