IEICE TRANSACTIONS on Communications
Pre-Filter Based on Allpass Filter for Blind MIMO-OFDM Equalization Using CMA Algorithm
Summary :
We propose a pre-filtering system for blind equalization in order to separate orthogonal frequency division multiplexing (OFDM) symbols in a multiple-input multiple-output (MIMO) - OFDM system. In a conventional blind MIMO-OFDM equalization without the pre-filtering system, there is a possibility that originally transmitted streams are permutated, resulting in the receiver being unable to retrieve desired signals. We also note that signal permutation is different for each subcarrier. In order to solve this problem, each transmitted stream of the proposed MIMO-OFDM system is pre-filtered by a unique allpass filter. In this paper, the pre-filter is referred to as transmit tagging filter (TT-Filter). At a receiver, an inverse filter of the TT-filter is used to blindly equalize a MIMO channel without permutation problem. Further, in order to overcome the issue of phase ambiguity, this paper introduces blind phase compensation.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E100-B No.4 pp.602-611
- Publication Date
- 2017/04/01
- Publicized
- 2016/10/28
- Online ISSN
- 1745-1345
- DOI
- 10.1587/transcom.2015EBP3517
- Type of Manuscript
- PAPER
- Category
- Wireless Communication Technologies
Authors
Naoto SASAOKA
Tottori University
James OKELLO
University of KwaZulu-Natal
Masatsune ISHIHARA
Tottori University
Kazuki AOYAMA
Tottori University
Yoshio ITOH
Tottori University
Keyword
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Naoto SASAOKA, James OKELLO, Masatsune ISHIHARA, Kazuki AOYAMA, Yoshio ITOH, "Pre-Filter Based on Allpass Filter for Blind MIMO-OFDM Equalization Using CMA Algorithm" in IEICE TRANSACTIONS on Communications,
vol. E100-B, no. 4, pp. 602-611, April 2017, doi: 10.1587/transcom.2015EBP3517.
Abstract: We propose a pre-filtering system for blind equalization in order to separate orthogonal frequency division multiplexing (OFDM) symbols in a multiple-input multiple-output (MIMO) - OFDM system. In a conventional blind MIMO-OFDM equalization without the pre-filtering system, there is a possibility that originally transmitted streams are permutated, resulting in the receiver being unable to retrieve desired signals. We also note that signal permutation is different for each subcarrier. In order to solve this problem, each transmitted stream of the proposed MIMO-OFDM system is pre-filtered by a unique allpass filter. In this paper, the pre-filter is referred to as transmit tagging filter (TT-Filter). At a receiver, an inverse filter of the TT-filter is used to blindly equalize a MIMO channel without permutation problem. Further, in order to overcome the issue of phase ambiguity, this paper introduces blind phase compensation.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2015EBP3517/_p
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@ARTICLE{e100-b_4_602,
author={Naoto SASAOKA, James OKELLO, Masatsune ISHIHARA, Kazuki AOYAMA, Yoshio ITOH, },
journal={IEICE TRANSACTIONS on Communications},
title={Pre-Filter Based on Allpass Filter for Blind MIMO-OFDM Equalization Using CMA Algorithm},
year={2017},
volume={E100-B},
number={4},
pages={602-611},
abstract={We propose a pre-filtering system for blind equalization in order to separate orthogonal frequency division multiplexing (OFDM) symbols in a multiple-input multiple-output (MIMO) - OFDM system. In a conventional blind MIMO-OFDM equalization without the pre-filtering system, there is a possibility that originally transmitted streams are permutated, resulting in the receiver being unable to retrieve desired signals. We also note that signal permutation is different for each subcarrier. In order to solve this problem, each transmitted stream of the proposed MIMO-OFDM system is pre-filtered by a unique allpass filter. In this paper, the pre-filter is referred to as transmit tagging filter (TT-Filter). At a receiver, an inverse filter of the TT-filter is used to blindly equalize a MIMO channel without permutation problem. Further, in order to overcome the issue of phase ambiguity, this paper introduces blind phase compensation.},
keywords={},
doi={10.1587/transcom.2015EBP3517},
ISSN={1745-1345},
month={April},}
Copy
TY - JOUR
TI - Pre-Filter Based on Allpass Filter for Blind MIMO-OFDM Equalization Using CMA Algorithm
T2 - IEICE TRANSACTIONS on Communications
SP - 602
EP - 611
AU - Naoto SASAOKA
AU - James OKELLO
AU - Masatsune ISHIHARA
AU - Kazuki AOYAMA
AU - Yoshio ITOH
PY - 2017
DO - 10.1587/transcom.2015EBP3517
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E100-B
IS - 4
JA - IEICE TRANSACTIONS on Communications
Y1 - April 2017
AB - We propose a pre-filtering system for blind equalization in order to separate orthogonal frequency division multiplexing (OFDM) symbols in a multiple-input multiple-output (MIMO) - OFDM system. In a conventional blind MIMO-OFDM equalization without the pre-filtering system, there is a possibility that originally transmitted streams are permutated, resulting in the receiver being unable to retrieve desired signals. We also note that signal permutation is different for each subcarrier. In order to solve this problem, each transmitted stream of the proposed MIMO-OFDM system is pre-filtered by a unique allpass filter. In this paper, the pre-filter is referred to as transmit tagging filter (TT-Filter). At a receiver, an inverse filter of the TT-filter is used to blindly equalize a MIMO channel without permutation problem. Further, in order to overcome the issue of phase ambiguity, this paper introduces blind phase compensation.
ER -
English
