A two-dimensional multipath channel estimator for CDMA systems with timing-offset errors |
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Authors: | Kai Yang Madhukumar AS |
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Affiliation: | Singapore-MIT Alliance, Nat. Univ. of Singapore, Singapore; |
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Abstract: | This letter proposes a two-dimensional pilot-aided channel estimator for multicarrier and single carrier cyclic prefix assisted code division multiple access systems in the presence of timing-offset errors. Using optimal training sequences with special cyclic correlation properties can minimize the timing offset errors. Optimal and binary sub-optimal training sequences are designed in this context. Both theoretic analysis and simulation studies demonstrate significant performance improvement for the proposed method over conventional frequency domain channel estimation methods. |
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