Turbo Equalized Double Window Cancellation and Combining Robust to Large Delay Spread Channel

JunHwan LEE; Tomoaki OHTSUKI; Masao NAKAGAWA

doi:10.1587/transcom.E92.B.517

Turbo Equalized Double Window Cancellation and Combining Robust to Large Delay Spread Channel

JunHwan LEE, Tomoaki OHTSUKI, Masao NAKAGAWA

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In orthogonal frequency division multiplexing (OFDM) the multipath exceeding the guard interval (GI) causes inter-symbol interference (ISI) and inter-carrier interference (ICI), thereby making it difficult to achieve high data rate transmission. In this paper, the double window cancellation and combining (DWCC), introduced in [14], is analyzed by investigating SINR distribution under different delay spread channels. The analysis indicates that the extension of processing window in iterative cancellation can have an adverse effect on the performance for small interference levels. In addition, the optimal combining of DWCC and turbo equalization (TE), named TE-DWCC, is investigated by varying the iterative cancellation procedure between DWCC and channel decoder and the decision feedback type such as hard decision feedback (HDF) or soft decision feedback (SDF). Finally, by changing interference level, code rate, and decision feedback type, the performance of TE-DWCC is compared with the conventional canceller that adopts turbo equalization in the exponentially distributed slow fading channel.

Publication: IEICE TRANSACTIONS on Communications Vol.E92-B No.2 pp.517-526

Publication Date: 2009/02/01

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Online ISSN: 1745-1345

DOI: 10.1587/transcom.E92.B.517

Type of Manuscript: PAPER

Category: Wireless Communication Technologies

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JunHwan LEE, Tomoaki OHTSUKI, Masao NAKAGAWA, "Turbo Equalized Double Window Cancellation and Combining Robust to Large Delay Spread Channel" in IEICE TRANSACTIONS on Communications, vol. E92-B, no. 2, pp. 517-526, February 2009, doi: 10.1587/transcom.E92.B.517.
Abstract: In orthogonal frequency division multiplexing (OFDM) the multipath exceeding the guard interval (GI) causes inter-symbol interference (ISI) and inter-carrier interference (ICI), thereby making it difficult to achieve high data rate transmission. In this paper, the double window cancellation and combining (DWCC), introduced in [14], is analyzed by investigating SINR distribution under different delay spread channels. The analysis indicates that the extension of processing window in iterative cancellation can have an adverse effect on the performance for small interference levels. In addition, the optimal combining of DWCC and turbo equalization (TE), named TE-DWCC, is investigated by varying the iterative cancellation procedure between DWCC and channel decoder and the decision feedback type such as hard decision feedback (HDF) or soft decision feedback (SDF). Finally, by changing interference level, code rate, and decision feedback type, the performance of TE-DWCC is compared with the conventional canceller that adopts turbo equalization in the exponentially distributed slow fading channel.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E92.B.517/_p

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@ARTICLE{e92-b_2_517,
author={JunHwan LEE, Tomoaki OHTSUKI, Masao NAKAGAWA, },
journal={IEICE TRANSACTIONS on Communications},
title={Turbo Equalized Double Window Cancellation and Combining Robust to Large Delay Spread Channel},
year={2009},
volume={E92-B},
number={2},
pages={517-526},
abstract={In orthogonal frequency division multiplexing (OFDM) the multipath exceeding the guard interval (GI) causes inter-symbol interference (ISI) and inter-carrier interference (ICI), thereby making it difficult to achieve high data rate transmission. In this paper, the double window cancellation and combining (DWCC), introduced in [14], is analyzed by investigating SINR distribution under different delay spread channels. The analysis indicates that the extension of processing window in iterative cancellation can have an adverse effect on the performance for small interference levels. In addition, the optimal combining of DWCC and turbo equalization (TE), named TE-DWCC, is investigated by varying the iterative cancellation procedure between DWCC and channel decoder and the decision feedback type such as hard decision feedback (HDF) or soft decision feedback (SDF). Finally, by changing interference level, code rate, and decision feedback type, the performance of TE-DWCC is compared with the conventional canceller that adopts turbo equalization in the exponentially distributed slow fading channel.},
keywords={},
doi={10.1587/transcom.E92.B.517},
ISSN={1745-1345},
month={February},}

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TY - JOUR
TI - Turbo Equalized Double Window Cancellation and Combining Robust to Large Delay Spread Channel
T2 - IEICE TRANSACTIONS on Communications
SP - 517
EP - 526
AU - JunHwan LEE
AU - Tomoaki OHTSUKI
AU - Masao NAKAGAWA
PY - 2009
DO - 10.1587/transcom.E92.B.517
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E92-B
IS - 2
JA - IEICE TRANSACTIONS on Communications
Y1 - February 2009
AB - In orthogonal frequency division multiplexing (OFDM) the multipath exceeding the guard interval (GI) causes inter-symbol interference (ISI) and inter-carrier interference (ICI), thereby making it difficult to achieve high data rate transmission. In this paper, the double window cancellation and combining (DWCC), introduced in [14], is analyzed by investigating SINR distribution under different delay spread channels. The analysis indicates that the extension of processing window in iterative cancellation can have an adverse effect on the performance for small interference levels. In addition, the optimal combining of DWCC and turbo equalization (TE), named TE-DWCC, is investigated by varying the iterative cancellation procedure between DWCC and channel decoder and the decision feedback type such as hard decision feedback (HDF) or soft decision feedback (SDF). Finally, by changing interference level, code rate, and decision feedback type, the performance of TE-DWCC is compared with the conventional canceller that adopts turbo equalization in the exponentially distributed slow fading channel.
ER -