A Systematic LT Coded Arrangement for Transmission Over Correlated Shadow Fading Channels in 802.11 Ad-hoc Wireless Networks
A Systematic LT Coded Arrangement for Transmission Over Correlated Shadow Fading Channels in 802.11 Ad-hoc Wireless Networks
Abstract— Systematic Luby Transform (SLT) codes constitute rateless codes, which are capable of adaptively adjusting their code rate depending on the channel quality without any explicit channel state information (CSI) at the transmitters. In this paper, we investigate the performance of an SLT coded wireless system communicating over a correlated fading channel within an 802.11b network. The simulation results show that the SLT coded system can achieve a 3 dB gain in term of fading deviation when fading correlation changes from 1 Hz to 5 Hz. Moreover, it is found that a system employing an SLT code can provide similar performance to other rateless codes, namely the Luby Transform (LT) code and the Random Linear Fountain Code (RLFC). However, this level of performance is achieved with a reduced number of decoding operations. A 20% reduction is achieved when the standard deviation of the fading amplitude is 10 dB and the communication distance is 7 m. Greater reductions are observed under more benign propagation conditions. Index Terms - Systematic Luby Transform (SLT) code, rate-
978-1-4244-2519-8
Ngo, Hoang Anh
c7839dbb-8b72-4376-9f70-0ab7dd5ce400
Stevens, Timothy
1c4d67b3-6640-49ff-ab0f-0a33fb190ed3
Maunder, Robert G.
76099323-7d58-4732-a98f-22a662ccba6c
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
May 2010
Ngo, Hoang Anh
c7839dbb-8b72-4376-9f70-0ab7dd5ce400
Stevens, Timothy
1c4d67b3-6640-49ff-ab0f-0a33fb190ed3
Maunder, Robert G.
76099323-7d58-4732-a98f-22a662ccba6c
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Ngo, Hoang Anh, Stevens, Timothy, Maunder, Robert G. and Hanzo, Lajos
(2010)
A Systematic LT Coded Arrangement for Transmission Over Correlated Shadow Fading Channels in 802.11 Ad-hoc Wireless Networks.
VTC 2010 Spring, Taipei.
16 - 19 May 2010.
(doi:10.1109/VETECS.2010.5494097).
Record type:
Conference or Workshop Item
(Paper)
Abstract
Abstract— Systematic Luby Transform (SLT) codes constitute rateless codes, which are capable of adaptively adjusting their code rate depending on the channel quality without any explicit channel state information (CSI) at the transmitters. In this paper, we investigate the performance of an SLT coded wireless system communicating over a correlated fading channel within an 802.11b network. The simulation results show that the SLT coded system can achieve a 3 dB gain in term of fading deviation when fading correlation changes from 1 Hz to 5 Hz. Moreover, it is found that a system employing an SLT code can provide similar performance to other rateless codes, namely the Luby Transform (LT) code and the Random Linear Fountain Code (RLFC). However, this level of performance is achieved with a reduced number of decoding operations. A 20% reduction is achieved when the standard deviation of the fading amplitude is 10 dB and the communication distance is 7 m. Greater reductions are observed under more benign propagation conditions. Index Terms - Systematic Luby Transform (SLT) code, rate-
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Published date: May 2010
Venue - Dates:
VTC 2010 Spring, Taipei, 2010-05-16 - 2010-05-19
Organisations:
Southampton Wireless Group
Identifiers
Local EPrints ID: 271178
URI: http://eprints.soton.ac.uk/id/eprint/271178
ISBN: 978-1-4244-2519-8
PURE UUID: 5c83a58c-a29c-4f16-8867-8286fb132cca
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Date deposited: 26 May 2010 10:14
Last modified: 18 Mar 2024 03:09
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Contributors
Author:
Hoang Anh Ngo
Author:
Timothy Stevens
Author:
Robert G. Maunder
Author:
Lajos Hanzo
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