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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Zoltowski, M.D. Hillery, W.J. Krauss, T.P. |
| Copyright Year | 2000 |
| Description | Author affiliation: Sch. of Electr. Eng., Purdue Univ., West Lafayette, IN, USA (Zoltowski, M.D.) |
| Abstract | We derive a subspace constrained "symbol-level" equalizer for the CDMA downlink over a frequency selective multipath channel and compare its performance with the chip-level equalizer, the unconstrained symbol-level equalizer, and the RAKE receiver. The constrained equalizer must lie in a subspace determined by shifted versions of the user's Walsh-Hadamard code multiplied by the long code. Due to the presence of the long code, the constrained equalizer varies from symbol to symbol, as the symbol-level equalizer does. Since the symbol is being estimated directly, the constrained equalizer performs better than the chip-level equalizer but at the expense of greatly increased computational complexity. The unconstrained equalizer performs better than the subspace constrained equalizer and is computationally less demanding. We summarize the advantages and disadvantages of each equalizer. |
| Starting Page | 781 |
| Ending Page | 785 |
| File Size | 408902 |
| Page Count | 5 |
| File Format | |
| ISBN | 0780365143 |
| ISSN | 10586393 |
| DOI | 10.1109/ACSSC.2000.911058 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2000-10-29 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Equalizers Multiaccess communication Frequency Subspace constraints Delay Receiving antennas Multipath channels Transmitters Pulse shaping methods Filters |
| Content Type | Text |
| Resource Type | Article |
| Subject | Signal Processing Computer Networks and Communications |
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