The performance of very high data rate Wireless Local Area
Networks (WLANs) is degraded by several problems such as long delay
spread in outdoor environments or interference that may arise both from
other WLANs or from other systems sharing the same band. The current
standards allow the use of multiple antennas at the receiver in a Single
Input Multiple Output (SIMO) configuration. Traditionally, algorithms
have been applied in the frequency domain, but this paper presents a comparison
of three approaches to be applied also in the time domain. It is
shown that a significant uncoded Bit Error Rate (BER) performance improvement
can be achieved by working before the FFT at the receiver side,
especially for channels with large delay spreads.
CitationPérez, A.; Bartolome, D. Pre-and post FFT SIMO array techniques in H2 environments. A: VTC'02. "VTC'02". Alabama: 2002.
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