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Viewing report
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Channel Shortening Equalizers for UWB Rake Receivers. Edition No. 1
VDM Publishing House, March 2009, Pages: 120
UWB systems occupy large bandwidths with very low
power spectral densities. This feature makes UWB
channels highly rich in multipaths. To exploit the
temporal diversity, a UWB receiver usually
incorporates Rake reception. Each multipath in the
channel carries just a fraction of the signal
energy. This phenomenon dictates a Rake receiver
with a large number of fingers to achieve a good
performance. Eventually, the Rake structure becomes
very complex from analysis and design perspectives
and expensive too. This book proposes channel
shortening or time domain equalization as a
technique to reduce the complexity of the UWB Rake
receiver. It begins with the definition of channel
shortening and provides a summary of the existing
channel shortening equalizer (CSE) designs and their
limitations. Consequently, this book presents
several CSE designs to reduce the UWB Rake receiver
complexity. A detalied performance analysis of the
proposed designs indicates that the CSEs can play a
significant role in designing a simple and cost
effective Rake receiver for UWB systems. This book
should be useful to the research students exploring
new CSE designs and applications.
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