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Asymmetric Equalization of the Indoor Wireless Channel
K.S. Oler, B.R. Petersen, A.B. Sesay
18th Biennial Symposium on Communications, pp. 245-856, June 2-5, 1996
The Asymmetric Decision Feedback Equalizer (ADFE), which may be
described as a decision feedback equalizer (DFE) with the forward filter
(FF) transposed to the transmitter, is proposed. The ADFE is shown to
have the same minimum mean-square error (MMSE) tap weights as the DFE,
and similar bit error rate (BER) performance. A finite discrete Markov
process is applied to predict the BER of the ADFE. The ADFE may be
used, along with a DFE, in a base-portable system (the ADFE) system to
achieve asymmetric equalization, or a shift in equalization complexity
from the portable to the base. The overall computational efficiency of
the ADFE may also prove useful in other scenarios.
CONTACTS: Kevin Oler, Brent Petersen, Abu Sesay
SUBJECTS: Modulation and Decoding, Wireless PAN/LAN/MAN
TYPE: Conference Publication
PUBLISHED: 1996
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