Recent developments have shown that there is considerable interest in wireless high-speed communications. While increasing data rates causes ISI cancellation problems, it also provides the opportunity to benefit from additional multipath diversity. The use of such diversity is not unique to equalised TDMA systems, indeed it has already been exploited in CDMA systems through the RAKE receiver. This paper introduces a new decision feedback equaliser (DFE) based on the use of a channel matched filter (CMF). The DFE coefficients are directly calculated from the uniform power delay profile of the CMF. The ISI cancellation accuracy obtained using this method is comparable to the conventional RLS-Kalman algorithm, however the computation load is significantly reduced. Performance comparisons and implementation benchmarks are given for an indoor 24 Mb/s (HIPERLAN) application.
|Translated title of the contribution||Exploiting multipath activity using low complexity equalisation techniques for high speed wireless LANs|
|Title of host publication||Unknown|
|Publisher||Institute of Electrical and Electronics Engineers (IEEE)|
|Pages||1593 - 1597|
|Publication status||Published - May 1998|
|Event||48th Vehicular Technology Conference 1998 (VTC 1998-Spring) - Ottawa, Canada|
Duration: 1 May 1998 → …
|Conference||48th Vehicular Technology Conference 1998 (VTC 1998-Spring)|
|Period||1/05/98 → …|
Bibliographical noteConference Proceedings/Title of Journal: 48th IEEE Vehicular Technology Conference
Rose publication type: Conference contribution
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- code division multiple access
- wireless LAN
- multipath channels