Improvement of CCI and Residual Frequency Offset Compensation Using Feedback Phase Tracking in MIMO-OFDM Systems

Naoto EGASHIRA; Hiroo TAKAYAMA; Takahiko SABA

doi:10.1093/ietcom/e90-b.4.934

Improvement of CCI and Residual Frequency Offset Compensation Using Feedback Phase Tracking in MIMO-OFDM Systems

Naoto EGASHIRA, Hiroo TAKAYAMA, Takahiko SABA

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In multi-input multi-output orthogonal frequency division multiplexing (MIMO-OFDM) systems, phase tracking schemes suffer from co-channel interference (CCI) and inter-carrier interference (ICI) caused by residual frequency offset. In this paper, we propose a residual frequency offset compensation scheme using feedback phase tracking to eliminate the effect of both ICI and CCI for MIMO-OFDM systems. The proposed phase tracking scheme estimates the amount of residual frequency offset in the frequency domain, and compensates for it in the time domain, periodically. Thus, the effect of ICI can be reduced. Furthermore, we consider two methods of channel estimation that enable the system to estimate the channel response several times within a packet to eliminate the effect of CCI. This is because the channel is generally estimated at the beginning of a packet, and this estimation is affected by residual frequency offset. First is the method that employs midambles. Second is the one that reuses the preamble. When the channel is estimated several times within a packet, the effect of CCI can be reduced. Simulation results show the proposed scheme can compensate for residual frequency offset and CCI more accurately than the conventional scheme, and improve the packet error rate (PER) performance.

Publication: IEICE TRANSACTIONS on Communications Vol.E90-B No.4 pp.934-942

Publication Date: 2007/04/01

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Online ISSN: 1745-1345

DOI: 10.1093/ietcom/e90-b.4.934

Type of Manuscript: PAPER

Category: Wireless Communication Technologies

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Naoto EGASHIRA, Hiroo TAKAYAMA, Takahiko SABA, "Improvement of CCI and Residual Frequency Offset Compensation Using Feedback Phase Tracking in MIMO-OFDM Systems" in IEICE TRANSACTIONS on Communications, vol. E90-B, no. 4, pp. 934-942, April 2007, doi: 10.1093/ietcom/e90-b.4.934.
Abstract: In multi-input multi-output orthogonal frequency division multiplexing (MIMO-OFDM) systems, phase tracking schemes suffer from co-channel interference (CCI) and inter-carrier interference (ICI) caused by residual frequency offset. In this paper, we propose a residual frequency offset compensation scheme using feedback phase tracking to eliminate the effect of both ICI and CCI for MIMO-OFDM systems. The proposed phase tracking scheme estimates the amount of residual frequency offset in the frequency domain, and compensates for it in the time domain, periodically. Thus, the effect of ICI can be reduced. Furthermore, we consider two methods of channel estimation that enable the system to estimate the channel response several times within a packet to eliminate the effect of CCI. This is because the channel is generally estimated at the beginning of a packet, and this estimation is affected by residual frequency offset. First is the method that employs midambles. Second is the one that reuses the preamble. When the channel is estimated several times within a packet, the effect of CCI can be reduced. Simulation results show the proposed scheme can compensate for residual frequency offset and CCI more accurately than the conventional scheme, and improve the packet error rate (PER) performance.
URL: https://globals.ieice.org/en_transactions/communications/10.1093/ietcom/e90-b.4.934/_p

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@ARTICLE{e90-b_4_934,
author={Naoto EGASHIRA, Hiroo TAKAYAMA, Takahiko SABA, },
journal={IEICE TRANSACTIONS on Communications},
title={Improvement of CCI and Residual Frequency Offset Compensation Using Feedback Phase Tracking in MIMO-OFDM Systems},
year={2007},
volume={E90-B},
number={4},
pages={934-942},
abstract={In multi-input multi-output orthogonal frequency division multiplexing (MIMO-OFDM) systems, phase tracking schemes suffer from co-channel interference (CCI) and inter-carrier interference (ICI) caused by residual frequency offset. In this paper, we propose a residual frequency offset compensation scheme using feedback phase tracking to eliminate the effect of both ICI and CCI for MIMO-OFDM systems. The proposed phase tracking scheme estimates the amount of residual frequency offset in the frequency domain, and compensates for it in the time domain, periodically. Thus, the effect of ICI can be reduced. Furthermore, we consider two methods of channel estimation that enable the system to estimate the channel response several times within a packet to eliminate the effect of CCI. This is because the channel is generally estimated at the beginning of a packet, and this estimation is affected by residual frequency offset. First is the method that employs midambles. Second is the one that reuses the preamble. When the channel is estimated several times within a packet, the effect of CCI can be reduced. Simulation results show the proposed scheme can compensate for residual frequency offset and CCI more accurately than the conventional scheme, and improve the packet error rate (PER) performance.},
keywords={},
doi={10.1093/ietcom/e90-b.4.934},
ISSN={1745-1345},
month={April},}

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TY - JOUR
TI - Improvement of CCI and Residual Frequency Offset Compensation Using Feedback Phase Tracking in MIMO-OFDM Systems
T2 - IEICE TRANSACTIONS on Communications
SP - 934
EP - 942
AU - Naoto EGASHIRA
AU - Hiroo TAKAYAMA
AU - Takahiko SABA
PY - 2007
DO - 10.1093/ietcom/e90-b.4.934
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E90-B
IS - 4
JA - IEICE TRANSACTIONS on Communications
Y1 - April 2007
AB - In multi-input multi-output orthogonal frequency division multiplexing (MIMO-OFDM) systems, phase tracking schemes suffer from co-channel interference (CCI) and inter-carrier interference (ICI) caused by residual frequency offset. In this paper, we propose a residual frequency offset compensation scheme using feedback phase tracking to eliminate the effect of both ICI and CCI for MIMO-OFDM systems. The proposed phase tracking scheme estimates the amount of residual frequency offset in the frequency domain, and compensates for it in the time domain, periodically. Thus, the effect of ICI can be reduced. Furthermore, we consider two methods of channel estimation that enable the system to estimate the channel response several times within a packet to eliminate the effect of CCI. This is because the channel is generally estimated at the beginning of a packet, and this estimation is affected by residual frequency offset. First is the method that employs midambles. Second is the one that reuses the preamble. When the channel is estimated several times within a packet, the effect of CCI can be reduced. Simulation results show the proposed scheme can compensate for residual frequency offset and CCI more accurately than the conventional scheme, and improve the packet error rate (PER) performance.
ER -