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Predetection quality diversity scheme for DECT outdoor applications

Predetection quality diversity scheme for DECT outdoor applications

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A simple and effective metric for antenna diversity in DECT is introduced. Using a segment of only 2 to 4 bit periods, this metric provides a reliable estimation of the received signal quality. To emulate ideal selection diversity in a single receiver, this metric is calculated by perforrning two successive measurements on each antenna during the DECT preamble. When using a correlative clock timing, this diversity provides a performance improvement similar to an ideal CRC-driven selection diversity employing two parallel receivers. This offers a cheap and simple solution to DECT outdoor applications such as PCS.

References

    1. 1)
      • L.B. Lopes . Performance of the DECT system in fading dispersive channels. Electron. Lett. , 17 , 1416 - 1417
    2. 2)
      • Mogensen, P.E., Petersen, S.: `Practical considerations of using antenna diversityin DECT', Proceedings of IEEE VTC'94, June 1994, 3, Stockholm, Sweden, p. 1532–1536.
    3. 3)
      • Safavi, S., Lopes, L.B., Mogensen, P.E., Frederiksen, F.: `An advanced base stationreceiver concept for DECT', Proceedings of IEEE VTC'95, July 1995, 1, Chicago, USA, p. 150–154.
    4. 4)
      • L. Lopes , S. Safavi . Relationship between performance and timing recovery mechanisms for aDECT link in dispersive channels. Electron. Lett. , 25 , 2173 - 2174
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