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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Safavi, S. Lopes, L.B. |
| Copyright Year | 1996 |
| Description | Author affiliation: Dept. of Electron. & Electr. Eng., Leeds Univ., UK (Safavi, S.; Lopes, L.B.) |
| Abstract | Previously, we introduced, the concept of an advanced DECT-type receiver based on a hybrid combination of equalisation and diversity. Such a structure is capable of coping with most hostile microcell outdoor environments. This paper considers other possible solutions which attempt to achieve a similar performance level whilst allowing a completely nonlinear front-end. We first introduce an improved clock recovery technique applicable to standard DECT receivers. When using a differential phase detector, this technique can extend the maximum delay spread range to about 140-160 ns from 80-100 ns for a standard set-up with a discriminator receiver. In addition, a new diversity scheme based on emulation of a quality-based selection diversity in a single receiver is introduced. It is shown that the performance in dispersive channels is significantly improved with respect to RSSI schemes (up to 270 ns). Flat-fading gains of over 10 dB are also observed. Finally the combination of the two techniques introduced produces excellent performance (/spl ap/350 ns delay spread range) closely approximating an ideal CRC-driven selection diversity (speed independent), but using only a single receiver chain. This structure could be a strong candidate for practical implementation, particularly in handsets for DECT PCS applications. |
| Starting Page | 824 |
| Ending Page | 828 |
| File Size | 602838 |
| Page Count | 5 |
| File Format | |
| ISBN | 0780331575 |
| ISSN | 10903038 |
| DOI | 10.1109/VETEC.1996.501426 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1996-04-28 |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Optimization Delay Microcell networks Clocks Phase detection Detectors Emulation Dispersion Telephone sets Personal communication networks |
| Content Type | Text |
| Resource Type | Article |
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