Channel Estimation with Lowpass Filter for UTRA FDD Downlink
| Authors: | J. Rinas, K. Knoche, K.-D. Kammeyer | ||||||
| Abstract: | This paper introduces a new Channel Estimation (CE) filter called Polyphase Lowpass-Interpolation (PLI)-filter for downlink coherent Rake-combining in a DSCDMA mobile environment. In this case some UTRA FDD scenarios are taken for showing the feasibility of this approach. It uses known periodically time-multiplexed pilot symbols for interpolating the channel coefficients in between. The idea of this approach is to find a compromise between noise reduction and adaptation to the time variant channel coefficients using a Remez lowpass design. This is paid by the use of at least six pilot sequences resulting in a three slot delay. Some simulation results of this PLI-filter compared with other well known CE-filters are presented. |
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| Document type: | Journal Paper | ||||||
| Publication: | February 2002 | ||||||
| Journal: | European Wireless 2002 | ||||||
| Pages: | 440–444 | ||||||
| Volume: | 1 | ||||||
| Index: | 189 | ||||||
| Files: |
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