Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review
Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review
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TY - GEN
T1 - Low-complexity pattern-eliminating codes for ISI-limited channels
AU - Blitvic, Natasa
AU - Zheng, Lizhong
AU - Stojanovic, Vladimir
PY - 2008/9/12
Y1 - 2008/9/12
N2 - This paper introduces low-complexity block codes, termed pattern-eliminating codes (PEC), which achieve a potentially large performance improvement over channels with residual inter-symbol interference (ISI). The codes are systematic, require no decoding and allow for simple encoding. They operate by prohibiting the occurrence of harmful symbol patterns. On some discrete-time communication channels, the (n, n - 1) PEC can prohibit all occurrences of symbol patterns causing worst-case ISI. The effectiveness of a PEC is shown to be uniquely determined by the sign-signature of the channel response, and a simple criterion is given for identifying channels for which the (n, n-1) code is effective. It is also shown that for most channel signatures, the (n, n-1) PEC can be augmented by a (0, n-1) runlength-limiting (RLL) code at no additional coding overhead. This paper also explores properties of the (n, n-b) PEC for b > 1. The simulation results show that the (n, n-1) PEC can provide error-rate reductions of several orders of magnitude, even with rate penalty taken into account. It is also shown that channel conditioning, such as equalization, can have a large effect on the code performance and potentially large gains can be derived from optimizing the equalizer jointly with a pattern-eliminating code.
AB - This paper introduces low-complexity block codes, termed pattern-eliminating codes (PEC), which achieve a potentially large performance improvement over channels with residual inter-symbol interference (ISI). The codes are systematic, require no decoding and allow for simple encoding. They operate by prohibiting the occurrence of harmful symbol patterns. On some discrete-time communication channels, the (n, n - 1) PEC can prohibit all occurrences of symbol patterns causing worst-case ISI. The effectiveness of a PEC is shown to be uniquely determined by the sign-signature of the channel response, and a simple criterion is given for identifying channels for which the (n, n-1) code is effective. It is also shown that for most channel signatures, the (n, n-1) PEC can be augmented by a (0, n-1) runlength-limiting (RLL) code at no additional coding overhead. This paper also explores properties of the (n, n-b) PEC for b > 1. The simulation results show that the (n, n-1) PEC can provide error-rate reductions of several orders of magnitude, even with rate penalty taken into account. It is also shown that channel conditioning, such as equalization, can have a large effect on the code performance and potentially large gains can be derived from optimizing the equalizer jointly with a pattern-eliminating code.
U2 - 10.1109/ICC.2008.237
DO - 10.1109/ICC.2008.237
M3 - Conference contribution/Paper
AN - SCOPUS:51249104650
SN - 9781424420742
T3 - IEEE International Conference on Communications
SP - 1214
EP - 1219
BT - ICC 2008 - IEEE International Conference on Communications, Proceedings
PB - IEEE
T2 - IEEE International Conference on Communications, ICC 2008
Y2 - 19 May 2008 through 23 May 2008
ER -