Channel Reliability Metric for Nakagami-m Fading Without Channel State Information

Document type: Conference Papers
Peer reviewed: Yes
Author(s): Asri Shaheem, Hans-Jürgen Zepernick, Manora Caldera
Title: Channel Reliability Metric for Nakagami-m Fading Without Channel State Information
Conference name: IEEE Global Communications Conference
Year: 2005
Pagination: 397-402
Publisher: IEEE
City: St. Louis, USA
Organization: Blekinge Institute of Technology
Department: School of Engineering - Dept. of Signal Processing (*** Error ***)
School of Engineering S- 372 25 Ronneby
+46 455 38 50 00
http://www.tek.bth.se/
Authors e-mail: shaheema@watri.org.au, hans-jurgen.zepernick@bth.se
Language: English
Abstract: An exact channel reliability metric for Nakagami-m fading when
no channel state information (CSI) is available at the receiver,
is developed. The proposed metric is suitable for combination with
iterative decoding schemes to ensure optimum performance. A low
complexity cubic approximation to the exact metric, which offers
almost identical performance and significantly outperforms the
conventional linear approximation, is presented. The numerical
results obtained using a single parity check (SPC) block turbo
code (BTC), show that the conventional linear approach can result
in up to a 27.5dB penalty at BER of 10E-5, compared to the
case where perfect CSI is available. On the other hand, the use of
the proposed exact reliability metric results in only a 1.1dB
performance loss at the same BER.
Subject: Telecommunications\General
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